Doctor of Engineering, Hokkaido University, Mar. 2001

デバイス物理

量子光学

共振器量子電磁力学

光ー物質相互作用

Nanotechnology/Materials, Crystal engineering

Nanotechnology/Materials, Optical engineering and photonics

Natural sciences, Semiconductors, optical and atomic physics

Apr. 2021 - Present
Nihon University, College of Engineering, Department of Electrical and Electronic Engineering, Professor

Oct. 2017 - Mar. 2021
NTT物性科学基礎研究所, 量子光物性研究部, 主幹研究員

Apr. 2016 - Mar. 2021
東京理科大学大学院, 理学研究科 物理学専攻, 客員教授

Jul. 2010 - Sep. 2017
NTT物性科学基礎研究所, 量子光物性研究部, 主任研究員

Jun. 2010 - Jul. 2010
Paul-Drude-Institut für Festkörperelektronik - Berlin, Visiting Researcher

Apr. 2006 - Jun. 2010
NTT物性科学基礎研究所, 量子光物性研究部, 研究主任

Apr. 2001 - Mar. 2006
NTT物性科学基礎研究所, 量子光物性研究部, 研究員

Apr. 1998 - Mar. 2001
北海道大学大学院, 工学研究科, 電子情報工学専攻 博士後期課程

Apr. 1996 - Mar. 1998
北海道大学大学院, 工学研究科, 電子情報工学専攻 修士課程

Apr. 1992 - Mar. 1996
Nihon University, College of Humanities and Sciences, Department of Applied Physics

Feb. 2020 - Present
Program Committee, Electronic Materials Symposium

Feb. 2015 - Nov. 2020
Program Committee, Solid-State Materials and Devices (SSDM)

Dec. 2018 - Jan. 2020
Steering Committee, Compound Semiconductor Week 2019 (CSW2019)

Apr. 2017 - Sep. 2017
Program Committee, International Symposium on Hybrid Quantum Systems 2017 (HQS2017)

May 2014 - May 2017
Program Committee, Conference on Lasers and Electro-Optics (CLEO)

Feb. 2015 - Dec. 2016
Steering Committee, Compound Semiconductor Week 2016 (CSW2016)

May 2013 - Apr. 2015

Aug. 2009 - Aug. 2011
Steering Committee, Electronic Materials Symposium

May 2009 - Jun. 2010
Program Committee, International Symposium on Compound Semiconductors (ISCS)

NTT物性科学基礎研究所, 所長表彰（論文賞）

NTT物性科学基礎研究所, 所長表彰（業績賞）

NTT物性科学基礎研究所, 所長表彰（業績賞）

NTT物性科学基礎研究所, 所長表彰（業績賞）

NTT物性科学基礎研究所, 所長表彰（功労賞）

応用物理学会, 第61回応用物理学関係連合講演会 講演奨励賞

応用物理学会北海道支部, 第35回応用物理学会北海道支部学術講演会 発表奨励賞

Efficient operation of atomic frequency comb optical memory using an optical frequency comb in 167Er3+:Y2SiO5
Shoichiro Yasui; Tomohiro Inaba; Atsushi Ishizawa; Kenichi Hitachi; Hiroo Omi; Kyuma Matsuura; Reina Kaji; Takehiko Tawara; Satoru Adachi; Xuejun Xu; Haruki Sanada
Optics Continuum, May 2024, Refereed

Improving optoelectronic properties of InP/InAs nanowire p-i-n devices with telecom-band electroluminescence
Guoqiang Zhang; Kouta Tateno; Satoshi Sasaki; Takehiko Tawara; Hiroki Hibino; Hideki Gotoh; Haruki Sanada
Optics Continuum, Feb. 2024

Observation of Acoustically Induced Dressed States of Rare-Earth Ions
Ryuichi Ohta; Grégoire Lelu; Xuejun Xu; Tomohiro Inaba; Kenichi Hitachi; Yoshitaka Taniyasu; Haruki Sanada; Atsushi Ishizawa; Takehiko Tawara; Katsuya Oguri; Hiroshi Yamaguchi; Hajime Okamoto
Physical Review Letters, Jan. 2024

In Situ Observation of Graphene Growth by Chemical Vapor Deposition Using Ultraviolet Reflection: Implications for Efficient Growth Control in the Industrial Process
Yui Ogawa; Takehiko Tawara; Yoshitaka Taniyasu
ACS Applied Nano Materials, Nov. 2023

Creation of high-resolution atomic frequency comb and optimization of pulse sequence for high-efficiency quantum memory in ¹⁶⁷Er:Y₂SiO₅
Shoichiro Yasui; Masaya Hiraishi; Atsushi Ishizawa; Hiroo Omi; Tomohiro Inaba; Xuejun Xu; Reina Kaji; Satoru Adachi; Takehiko Tawara
Optics Continuum, Aug. 2022

Low-loss erbium-incorporated rare-earth oxide waveguides on Si with bound states in the continuum and the large optical signal enhancement in them
Xuejun Xu; Tomohiro Inaba; Tai Tsuchizawa; Atsushi Ishizawa; Haruki Sanada; Takehiko Tawara; Hiroo Omi; Katsuya Oguri; Hideki Gotoh
Optics Express, Dec. 2021

Precise spectroscopy of 167Er:Y2SiO5 based on laser frequency stabilization using a fiber laser comb
S. Yasui; M. Hiraishi; A. Ishizawa; H. Omi; R. Kaji; S. Adachi; T. Tawara
Optics Express, Aug. 2021

Rare-Earth-Mediated Optomechanical System in the Reversed Dissipation Regime
Ryuichi Ohta; Loïc Herpin; Victor M. Bastidas; Takehiko Tawara; Hiroshi Yamaguchi; Hajime Okamoto
Physical Review Letters, Jan. 2021, Refereed, Not invited

Near-field cavity optomechanical coupling in a compound semiconductor nanowire
Motoki Asano; Guoqiang Zhang; Takehiko Tawara; Hiroshi Yamaguchi; Hajime Okamoto
Communications Physics, Dec. 2020, Refereed, Not invited

Nanowire-based telecom-band light-emitting diodes with efficient light extraction
Guoqiang Zhang; Dominika Gnatek; Masato Takiguchi; Xuejun Xu; Kouta Tateno; Satoshi Sasaki; Takehiko Tawara; Hideki Gotoh
Japanese Journal of Applied Physics, Oct. 2020, Refereed, Not invited

Epitaxial single-crystal rare-earth oxide in horizontal slot waveguide for silicon-based integrated active photonic devices
Xuejun Xu; Viviana Fili; Wojciech Szuba; Masaya Hiraishi; Tomohiro Inaba; Takehiko Tawara; Hiroo Omi; Hideki Gotoh
Optics Express, May 2020, Refereed, Not invited

Optical coherent transients in 167Er3+ at telecom-band wavelength
Masaya Hiraishi; Mark IJspeert; Takehiko Tawara; Satoru Adachi; Reina Kaji; Hiroo Omi; Hideki Gotoh
Optics Letters, Oct. 2019, Refereed, Not invited

Horizontal Slot Waveguides with Strong Optical Confinement in Low Refractive Index Oxide Films
Xuejun Xu; Tomohiro Inaba; Takehiko Tawara; Hiroo Omi; Hideki Gotoh
OECC/PSC 2019 - 24th OptoElectronics and Communications Conference/International Conference Photonics in Switching and Computing 2019, Jul. 2019

Low-temperature formation of GeSn nanodots by Sn mediation
Hiroshi Okamoto; Kensuke Takita; Kazuto Tsushima; Takehiko Tawara; Kouta Tateno; Guoqiang Zhang; Hideki Gotoh
JAPANESE JOURNAL OF APPLIED PHYSICS, Jun. 2019, Refereed, Not invited

Study on the formation mechanism of bismuth-mediated Ge nanodots fabricated by vacuum evaporation
Kazuto Tsushima; Kensuke Takita; Hideki Nakazawa; Takehiko Tawara; Kouta Tateno; Guoqiang Zhang; Hideki Gotoh; Hiroshi Okamoto
JAPANESE JOURNAL OF APPLIED PHYSICS, Jun. 2019, Refereed, Not invited

Strain-induced exciton decomposition and anisotropic lifetime modulation in a GaAs micromechanical resonator
Ryuichi Ohta; Hajime Okamoto; Takehiko Tawara; Hideki Gotoh; Hiroshi Yamaguchi
PHYSICAL REVIEW B, Mar. 2019, Refereed, Not invited

Telecom-band lasing in single InP/InAs heterostructure nanowires at room temperature
Guoqiang Zhang; Masato Takiguchi; Kouta Tateno; Takehiko Tawara; Masaya Notomi; Hideki Gotoh
SCIENCE ADVANCES, Feb. 2019, Refereed, Not invited

Magnetically purified erbium-doped oxide crystal-towards creating a quantum-information-manipulation platform
Takehiko Tawara; Tomohiro Inaba
NTT Technical Review, 2019

Population relaxation and coherence times of 167Er3+ diluted to 10 ppm in Y2SiO5 at zero magnetic field
Masaya Hiraishi; Mark I. Jspeert; Takehiko Tawara; Hiroo Omi; Hideki Gotoh
Optics InfoBase Conference Papers, 2019

Epitaxial growth and optical properties of Er-doped CeO2 on Si(111)
Tomohiro Inaba; Takehiko Tawara; Hiroo Omi; Hideki Yamamoto; Hideki Gotoh
Optical Materials Express, Sep. 2018, Refereed, Not invited

Dynamic Control of the Coupling between Dark and Bright Excitons with Vibrational Strain
Ryuichi Ohta; Hajime Okamoto; Takehiko Tawara; Hideki Gotoh; Hiroshi Yamaguchi
PHYSICAL REVIEW LETTERS, Jun. 2018, Refereed, Not invited

Direct modulation of a single InP/InAs nanowire light-emitting diode
Masato Takiguchi; Guoqiang Zhang; Satoshi Sasaki; Kengo Nozaki; Edward Chen; Kouta Tateno; Takehiko Tawara; Akihiko Shinya; Hideki Gotoh; Masaya Notomi
APPLIED PHYSICS LETTERS, Jun. 2018, Refereed, Not invited

Relationship between the Fano asymmetry parameter and time-domain spectra studied by time-resolved measurement of carriers and phonons in p -type Si
Keiko Kato; Yuya Hasegawa; Katsuya Oguri; Takehiko Tawara; Tadashi Nishikawa; Hideki Gotoh
Physical Review B, Mar. 2018, Refereed, Not invited

Investigation of population dynamics in 1.54-μm telecom transitions of epitaxial (Erx,Sc1-x)2O3 thin layers for coherent population manipulation: weak excitation regime
S. Adachi; Y. Kawakami; R. Kaji; T. Tawara; H. Omi
Applied Science, 2018, Refereed, Not invited

Effect of isotopic purification on spectral-hole narrowing in Er-167(3+) hyperfine transitions
Takehiko Tawara; Giacomo Mariani; Kaoru Shimizu; Hiroo Omi; Satoru Adachi; Hideki Gotoh
APPLIED PHYSICS EXPRESS, Apr. 2017, Refereed, Not invited

Mechanism of concentration quenching in epitaxial (ErxSc1-x)(2)O-3 thin layers
Takehiko Tawara; Yoshihiro Kawakami; Hiroo Omi; Reina Kaji; Satoru Adachi; Hideki Gotoh
OPTICAL MATERIALS EXPRESS, Mar. 2017, Refereed, Not invited

Spectral Hole Narrowing in Er3+ 4f Transitions by Isotope Separation
Takehiko Tawara; Giacomo Mariani; Kaoru Shimizu; Hiroo Omi; Satoru Adachi; Hideki Gotoh
2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2017, Refereed, Not invited

Photonic crystal membrane with single crystalline rare-earth oxide using selective area growth by MBE
Takehiko Tawara; Hiroo Omi; Thomas McManus; Aleix Llenas; Eiichi Kuramochi; Satoru Adachi; Hideki Gotoh
2016 COMPOUND SEMICONDUCTOR WEEK (CSW) INCLUDES 28TH INTERNATIONAL CONFERENCE ON INDIUM PHOSPHIDE & RELATED MATERIALS (IPRM) & 43RD INTERNATIONAL SYMPOSIUM ON COMPOUND SEMICONDUCTORS (ISCS), 2016, Refereed, Not invited

Determination of phonon decay rate in p-type silicon under Fano resonance by measurement of coherent phonons
Keiko Kato; Katsuya Oguri; Haruki Sanada; Takehiko Tawara; Tetsuomi Sogawa; Hideki Gotoh
AIP ADVANCES, Sep. 2015, Refereed, Not invited

Effect of structure and composition on optical properties of Er-Sc silicates prepared from multi-nanolayer films
A. Najar; H. Omi; T. Tawara
OPTICS EXPRESS, Mar. 2015, Refereed, Not invited

Visible up-conversion luminescence in (ErSc)(2)O-3 epitaxial thin films and its suppression by photonic band-gap
T. Tawara; T. McManus; Y. Kawakami; H. Omi; A. Najar; R. Kaji; S. Adachi; H. Gotoh
2015 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2015, Refereed, Not invited

Energy transfers in telecommunication-band region of (Sc,Er)(2)O-3 thin films grown on Si(111)
S. Adachi; Y. Kawakami; R. Kaji; T. Tawara; H. Omi
19TH INTERNATIONAL CONFERENCE ON ELECTRON DYNAMICS IN SEMICONDUCTORS, OPTOELECTRONICS AND NANOSTRUCTURES (EDISON' 19), 2015, Refereed, Not invited

Rare-earth epitaxial films as a platform for quantum information manipulation
Takehiko Tawara; Hiroo Omi
NTT Technical Review, Sep. 2014

Simultaneous light emissions from erbium-thulium silicates and oxides on silicon in the second and third telecommunications bands
Maria Anagnosti; Hiroo Omi; Takehiko Tawara
OPTICAL MATERIALS EXPRESS, Sep. 2014, Refereed, Not invited

Scandium effect on the luminescence of Er-Sc silicates prepared from multi-nanolayer films
Adel Najar; Hiroo Omi; Takehiko Tawara
NANOSCALE RESEARCH LETTERS, Jul. 2014, Refereed, Not invited

Deep-level transient spectroscopy characterization of In(Ga) As quantum dots fabricated using Bi as a surfactant
Hiroshi Okamoto; Soichiro Suzuki; Hidefumi Narita; Takehiko Tawara; Kouta Tateno; Hideki Gotoh
JAPANESE JOURNAL OF APPLIED PHYSICS, Jun. 2014, Refereed, Not invited

Molecular beam epitaxy of (ErxSc1x)2O 3 on Si(111) for active integrated optical devices
H. Omi; T. Tawara; T. Hozumi; R. Kaji; S. Adachi; H. Gotoh; T. Sogawa
PHOTOPTICS 2014 - Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology, 2014

Structural characterization and luminescence properties of ErxSc2-xSi2O7 prepared by RF sputtering
A. Najar; H. Omi; T. Tawara
Optics InfoBase Conference Papers, 2014

Optical transition between Stark levels in (ErSc)2O3 epitaxitial films
T. Tawara; H. Omi; A. Najar; R. Kaji; S. Adachi; H. Gotoh
Optics InfoBase Conference Papers, 2014

Structural characterization and luminescence properties of ErxSc2-xSi2O7 prepared by RF sputtering
A. Najar; H. Omi; T. Tawara
2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2014, Refereed, Not invited

Optical transition between Stark levels in (ErSc)(2)O-3 epitaxitial films
T. Tawara; H. Omi; A. Najar; R. Kaji; S. Adachi; H. Gotoh
2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2014, Refereed, Not invited

Light emission from thulium silicates and oxides for optical amplifiers on silicon in the extended optical communications band
Hiroo Omi; Atsushi Hagiwara; Takehiko Tawara
AIP ADVANCES, Jul. 2013, Refereed, Not invited

Population dynamics in epitaxial Er2O3 thin films grown on Si(111)
T. Tawara; H. Omi; T. Hozumi; R. Kaji; S. Adachi; H. Gotoh; T. Sogawa
APPLIED PHYSICS LETTERS, Jun. 2013, Refereed, Not invited

Mixture formation of ErxYb2-xSi2O7 and ErxYb2-xO3 on Si for broadening the C-band in an optical amplifier
Hiroo Omi; Yoshiyuki Abe; Maria Anagnosti; Takehiko Tawara
AIP ADVANCES, Apr. 2013, Refereed, Not invited

Energy transfer in epitaxial Er2O3 thin films grown on Si(111) substrates
T. Tawara; T. Hozumi; H. Omi; R. Kaji; S. Adachi; H. Gotoh; T. Sogawa
2013 IEEE Photonics Conference, IPC 2013, 2013, Refereed, Not invited

Electroluminescence from Er3+ incorporated into silicon oxide thin film on silicon in a scanning tunneling microscope
Jan Fiala; Hiroo Omi; Takehiko Tawara
JOURNAL OF NANOPHOTONICS, Mar. 2012, Refereed, Not invited

Real-time synchrotoron radiation X-ray diffraction and abnormal temperature dependence of photoluminescence from erbium silicates on SiO2/Si substrates
H. Omi; T. Tawara; M. Tateishi
AIP ADVANCES, Mar. 2012, Refereed, Not invited

Energy Transfers between Er3+ Ions Located at the Two Crystalographic Sites of Er2O3 Grown on Si(111)
Hiroo Omi; Takehiko Tawara
JAPANESE JOURNAL OF APPLIED PHYSICS, Feb. 2012, Refereed, Not invited

Light emission from thulium silicates for optical amplifiers on silicon in extended optical communication bands
Hiroo Omi; Atsushi Hagiwara; Takehiko Tawara
IEEE International Conference on Group IV Photonics GFP, 2012, Refereed, Not invited

Distinctive Feature of Ripening During Growth Interruption of InGaAs Quantum Dot Epitaxy Using Bi as a Surfactant
Hiroshi Okamoto; Takehiko Tawara; Kouta Tateno; Hideki Gotoh; Hidehiko Kamada; Tetsuomi Sogawa
JAPANESE JOURNAL OF APPLIED PHYSICS, Jun. 2011, Refereed, Not invited

Doping-type dependence of phonon dephasing dynamics in Si
Keiko Kato; Katsuya Oguri; Atsushi Ishizawa; Kouta Tateno; Takehiko Tawara; Hideki Gotoh; Masahiro Kitajima; Hidetoshi Nakano; Tetsuomi Sogawa
APPLIED PHYSICS LETTERS, Apr. 2011, Refereed, Not invited

In(Ga)As積層量子ドット構造のDLTS評価
鈴木 聡一郎; 佐藤 真哉; 岩崎 拓郎; 俵 毅彦; 舘野 功太; 後藤 秀樹; 寒川 哲臣; 岡本 浩
電気関係学会東北支部連合大会講演論文集, 2011

Structural and optical properties of Zn(Mg,Cd)O alloy films grown by remote-plasma-enhanced MOCVD
Kenji Yamamoto; Takako Tsuboi; Toshiya Ohashi; Takehiko Tawara; Hideki Gotoh; Atsushi Nakamura; Jiro Temmyo
JOURNAL OF CRYSTAL GROWTH, May 2010, Refereed, Not invited

Synthesis and characterization of ZnCdO/ZnO multiple quantum wells by remote-plasma-enhanced MOCVD
Kenji Yamamoto; Masahiko Adachi; Takehiko Tawara; Hideki Gotoh; Atsushi Nakamura; Jiro Temmyo
JOURNAL OF CRYSTAL GROWTH, Apr. 2010, Refereed, Not invited

Real-Time Observation of Ultrafast Carrier and Phonon Dynamics in p-Type Silicon
KATO Keiko; ISHIZAWA Atsushi; OGURI Katsuya; TATENO Kouta; TAWARA Takehiko; GOTOH Hideki; NAKANO Hidetoshi
The Review of laser engineering, Feb. 2010, Refereed, Not invited

Cavity-QED assisted attraction between a cavity mode and an exciton mode in a planar photonic-crystal cavity
T. Tawara; H. Kamada; T. Tanabe; T. Sogawa; H. Okamoto; P. Yao; P. K. Pathak; S. Hughes
OPTICS EXPRESS, Feb. 2010, Refereed, Not invited

Growth and Characterization of Telecommunication-Wavelength Quantum Dots Using Bi as a Surfactant
Hiroshi Okamoto; Takehiko Tawara; Hideki Gotoh; Hidehiko Kamada; Tetsuomi Sogawa
JAPANESE JOURNAL OF APPLIED PHYSICS, 2010, Refereed, Not invited

Coherent transfer of orbital angular momentum to excitons by optical four-wave mixing
Y. Ueno; Y. Toda; S. Adachi; R. Morita; T. Tawara
OPTICS EXPRESS, Oct. 2009, Refereed, Not invited

Synthesis of GaAs nanowires with very small diameters and their optical properties with the radial quantum-confinement effect
Guoqiang Zhang; Kouta Tateno; Haruki Sanada; Takehiko Tawara; Hideki Gotoh; Hidetoshi Nakano
APPLIED PHYSICS LETTERS, Sep. 2009, Refereed, Not invited

Fabrication of Nanomechanical Structures from Bulk-GaAs Using Angled Ion Etching
Vijay K. Singh; Kenji Yamazaki; Takehiko Tawara; Hajime Okamoto; Hiroshi Yamaguchi
APPLIED PHYSICS EXPRESS, Jun. 2009, Refereed, Not invited

Cavity mode emission in weakly coupled quantum dot - cavity systems
T. Tawara; H. Kamada; S. Hughes; H. Okamoto; M. Notomi; T. Sogawa
OPTICS EXPRESS, Apr. 2009, Refereed, Not invited

Dephasing dynamics of coherent phonons in heavily doped Si under non-resonant photoexcitation
K. Kato; A. Ishizawa; K. Oguri; K. Tateno; T. Tawara; M. Kitajima; H. Nakano
CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009, Refereed, Not invited

Cavity-QED assisted "attraction" between an exciton and a cavity mode in a planar photonic-crystal cavity
T. Tawara; S. Hughes; H. Kamada; P. Yao; H. Okamoto; T. Tanabe; T. Sogawa
2009 CONFERENCE ON LASERS AND ELECTRO-OPTICS AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2009), VOLS 1-5, 2009, Refereed, Not invited

Anisotropy in Ultrafast Carrier and Phonon Dynamics in p-Type Heavily Doped Si
Kato Keiko; Ishizawa Atsushi; Oguri Katsuya; Tateno Kouta; Tawara Takehiko; Gotoh Hideki; Kitajima Masahiro; Nakano Hidetoshi
Japanese Journal of Applied Physics, 2009, Refereed, Not invited

Photoluminescence study of bare freestanding gallium arsenide nanowires grown by vapor-liquid-solid method
Guoqiang Zhang; Kouta Tateno; Haruki Sanada; Takehiko Tawara; Hideki Gotoh; Hidetoshi Nakano
2009 LASERS & ELECTRO-OPTICS & THE PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, VOLS 1 AND 2, 2009, Refereed, Not invited

Photoluminescence lifetime and potential fluctuation in wurtzite Zn1-xCdxO alloy films
Kenji Yamamoto; Toshiya Ohashi; Takehiko Tawara; Hideki Gotoh; Atsushi Nakamura; Jiro Temmyo
APPLIED PHYSICS LETTERS, Oct. 2008, Refereed, Not invited

Dot-height dependence of photoluminescence from ZnO quantum dots
Atsushi Nakamura; Kota Okamatsu; Takehiko Tawara; Hideki Gotoh; Jiro Temmyo; Yoshio Matsui
JAPANESE JOURNAL OF APPLIED PHYSICS, Apr. 2008, Refereed, Not invited

Quality factor control and lasing characteristics of InAs/InGaAs quantum dots embedded in photonic-crystal nanocavities
T. Tawara; H. Kamada; Y. -H. Zhang; T. Tanabe; N. I. Cade; D. Ding; S. R. Johnson; H. Gotoh; E. Kuramochi; M. Notomi; T. Sogawa
OPTICS EXPRESS, Apr. 2008, Refereed, Not invited

Single-photon emission from single quantum dots in a hybrid pillar microcavity
Takao Yamaguchi; Takehiko Tawara; Hidehiko Kamada; Hideki Gotoh; Hiroshi Okamoto; Hidetoshi Nakano; Osamu Mikami
APPLIED PHYSICS LETTERS, Feb. 2008, Refereed, Not invited

Evidence of quantum dot-like nano-objects in InGaN quantum wells provided by narrow photoluminescence spectra from localized exciton
H. Gotoh; T. Akasaka; T. Tawara; Y. Kobayashi; T. Makimoto; H. Nakano
PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 4 NO 7 2007, 2007, Refereed, Not invited

Role of re-absorption effect to quality factor in quantum-dot photonic-crystal nanocavities
T. Tawara; H. Kamada; Y. -H. Zhang; T. Tanabe; N. I. Cade; H. Gotoh; D. Ding; S. R. Johnson; E. Kuramochi; M. Notomi; H. Nakano
2007 INTERNATIONAL CONFERENCE ON INDIUM PHOSPHIDE AND RELATED MATERIALS, CONFERENCE PROCEEDINGS, 2007, Refereed, Not invited

Temperature Insensitive Ultra Low Threshold Lasing in Quantum-Dot Photonic-Crystal Nanocavities
T. Tawara; H. Kamada; Y. -H. Zhang; N. I. Cade; T. Tanabe; H. Gotoh; D. Ding; S. R. Johnson; E. Kuramochi; M. Notomi; H. Nakano
2007 CONFERENCE ON LASERS & ELECTRO-OPTICS/QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2007), VOLS 1-5, 2007, Refereed, Not invited

Effects of nonradiative centers on localized excitons in InGaN quantum well structures
H. Gotoh; T. Akasaka; T. Tawara; Y. Kobayashi; T. Makimoto; H. Nakano
APPLIED PHYSICS LETTERS, Nov. 2006, Refereed, Not invited

Highly selective ZEP/AlGaAs etching for photonic crystal structures using Cl-2/HI/Xe mixed plasma
Takehiko Tawara; Tetsu Ito; Takasumi Tanabe; Kouta Tateno; Eiichi Kuramochi; Masaya Notomi; Hidetoshi Nakano
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, Sep. 2006, Refereed, Not invited

Enhanced emission of single quantum dot formed by interface fluctuations in photonic-crystal microcavities
Tetsu Ito; Takehiko Tawara; Hiroshi Yamaguchi; Mineo Ueki; Kouta Tateno; Satoshi Mitsugi; Hideki Gotoh; Eiichi Kuramochi; Masaya Notomi
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS, Jun. 2006, Refereed, Not invited

Modifying optical properties of InGaN quantum wells by a large piezoelectric polarization
H. Gotoh; T. Tawara; Y. Kobayashi; N. Kobayashi; Y. Yamauchi; T. Makimoto; T. Saitoh
PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 6, 2006, Refereed, Not invited

Detecting spatially localized excitons in InGaN quantum well structures with a micro-photoluminescence technique
H. Gotoh; T. Akasaka; T. Tawara; Y. Kobayashi; T. Makimoto; H. Nakano
SOLID STATE COMMUNICATIONS, 2006, Refereed, Not invited

Control of exciton-photon coupling in GaN-based microcavities
Takehiko Tawara; Takehiko Tawara; Takehiko Tawara; Hideki Gotoh; Hideki Gotoh; Hideki Gotoh; Tetsuya Akasaka; Tetsuya Akasaka
NTT Technical Review, Dec. 2005, Refereed, Not invited

Charged exciton emission at 1.3 mu m from single InAs quantum dots grown by metalorganic chemical vapor deposition
NI Cade; H Gotoh; H Kamada; T Tawara; T Sogawa; H Nakano; H Okamoto
APPLIED PHYSICS LETTERS, Oct. 2005, Refereed, Not invited

High drain current density and reduced gate leakage current in channel-doped AlGaN/GaN heterostructure field-effect transistors with Al2O3/Si3N4 gate insulator
N Maeda; CX Wang; T Enoki; T Makimoto; T Tawara
APPLIED PHYSICS LETTERS, Aug. 2005, Refereed, Not invited

Superior suppression of gate current leakage in Al2O3/Si3N4 bilayer-based AlGaN/GaN insulated gate heterostructure field-effect transistors
CX Wang; N Maeda; M Hiroki; T Tawara; T Makimoto; T Kobayahsi; T Enoki
JOURNAL OF ELECTRONIC MATERIALS, Apr. 2005, Refereed, Not invited

Comparison of AlGaN/GaN insulated gate heterostructure field-effect transistors with ultrathin Al2O3/Si3N4 bilayer and Si3N4 single layer
CX Wang; N Maeda; M Hiroki; T Tawara; T Makimoto; T Kobayashi; T Enoki
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, Apr. 2005, Refereed, Not invited

Electronic shell structure in single InAs/InGaAs quantum dots emitting at 1.3 μm
N. I. Cade; H. Gotoh; H. Kamada; T. Tawara; T. Sogawa; H. Nakano; H. Okamoto
Quantum Electronics and Laser Science Conference (QELS), 2005

Optical characteristics of single InAs/InGaAs quantum dots emitting around 1.3 μm
N. I. Cade; H. Okamoto; H. Gotoh; H. Kamada; T. Tawara; T. Sogawa
IQEC, International Quantum Electronics Conference Proceedings, 2005, Refereed, Not invited

Observation of cavity polaritons in InGaN quantum well microcavities
T. Tawara; H. Gotoh; T. Akasaka; N. Kobayashi; T. Makimoto; T. Saitoh
Physica Status Solidi C: Conferences, 2005, Refereed, Not invited

Enhanced single QD spectra from 2D GaAs photonic-crystal cavities
T Ito; T Tawara; K Tateno; H Yamaguch; M Ueki; S Mitsugi; E Kuramochi; H Gotoh; M Notomi
2005 PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, 2005, Refereed, Not invited

Dispersion relation of InGaN cavity polaritons measured by angle-resolved photoluminescence
T Tawara; H Gotoh; H Kamada; T Akasaka; T Makimoto; T Saitoh; H Nakano
2005 PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, 2005, Refereed, Not invited

Observation of cavity polaritons in InGaN quantum well microcavities
T Tawara; H Gotoh; T Akasaka; N Kobayashi; T Makimoto; T Saitoh
FOURTH INTERNATIONAL CONFERENCE ON PHYSICS OF LIGHT-MATTER COUPLING IN NANOSTRUCTURES (PLMCN4), 2005, Refereed, Not invited

Cavity polaritons in InGaN microcavities at room temperature
T Tawara; H Gotoh; T Akasaka; N Kobayashi; T Saitoh
PHYSICAL REVIEW LETTERS, Jun. 2004, Refereed, Not invited

Piezoelectric effects on photoluminescence properties in 10-nm-thick InGaN quantum wells
H Gotoh; T Tawara; Y Kobayashi; N Kobayashi; T Saitoh
APPLIED PHYSICS LETTERS, Dec. 2003, Refereed, Not invited

Doping design of GaN-based heterostructure field-effect transistors with high electron density for high-power applications
Narihiko Maeda; Takehiko Tawara; Tadashi Saitoh; Kotaro Tsubaki; Naoki Kobayashi
Physica Status Solidi (A) Applied Research, Nov. 2003, Refereed, Not invited

Doping design of GaN-based heterostructure field-effect transistors with high electron density for high-power applications
N Maeda; T Tawara; T Saitoh; K Tsubaki; N Kobayashi
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, Nov. 2003, Refereed, Not invited

Low-threshold lasing of InGaN vertical-cavity surface-emitting lasers with dielectric distributed Bragg reflectors
T Tawara; H Gotoh; T Akasaka; N Kobayashi; T Saitoh
APPLIED PHYSICS LETTERS, Aug. 2003, Refereed, Not invited

Two-dimensional electron gas transport properties in AlGaN/GaN heterostructure field-effect transistors designed for high-power applications
N Maeda; K Tsubaki; T Saitoh; T Tawara; N Kobayashi
OPTICAL MATERIALS, Jul. 2003, Refereed, Not invited

Highly reflective distributed Bragg reflectors using a deeply etched semiconductor/air grating for InGaN/GaN laser diodes
T Saitoh; M Kumagai; HL Wang; T Tawara; T Nishida; T Akasaka; N Kobayashi
APPLIED PHYSICS LETTERS, Jun. 2003, Refereed, Not invited

II-VI quantum dots grown by MOVPE
Suemune, I; K Yoshida; H Kumano; T Tawara; A Ueta; S Tanaka
JOURNAL OF CRYSTAL GROWTH, Feb. 2003, Refereed, Not invited

Gan-based blue laser diodes with deeply etched high-reflectivity DBR mirrors
Tadashi Saitoh; Masami Kumagai; Hailong Wang; Takehiko Tawara; Toshio Nishida; Testuya Akasaka; Naoki Kobayashi
Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2003, Refereed, Not invited

Large piezoelectric effects on photoluminescence properties in lonm-thick InGaN quantum wells
H. Gotoh; T. Tawara; Y. Kobayashi; N. Kobayashi; T. Saitoh
Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2003, Refereed, Not invited

Low-threshold lasing of optically pumped InGaN vertical-cavity surface-emitting lasers with dielectric mirrors
Takehiko Tawara; Hideki Gotoh; Tetsuya Akasaka; Naoki Kobayashi; Tadashi Saitoh
Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2003, Refereed, Not invited

Fabrication of an InGaN multiple-quantum-well laser diode featuring high reflectivity semiconductor/air distributed Bragg reflectors
HL Wang; M Kumagai; T Tawara; T Nishida; T Akasaka; N Kobayashi; T Saitoh
APPLIED PHYSICS LETTERS, Dec. 2002, Refereed, Not invited

Longitudinal-optical-phonon-assisted energy relaxation in self-assembled CdS quantum dots embedded in ZnSe
H Kumano; H Yoshida; T Tawara; Suemune, I
JOURNAL OF APPLIED PHYSICS, Oct. 2002, Refereed, Not invited

Novel design to fabricate high reflectivity GaN-Based semiconductor/air distributed bragg reflector with the tilt of vertical sidewall
HL Wang; T Tawara; M Kumagai; T Saftoh; N Kobayashi
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, Jun. 2002, Refereed, Not invited

Strong coupling of US quantum dots to confined photonic modes in ZnSe-based microcavities
T Tawara; Suemune, I; H Kumano
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, Mar. 2002, Refereed, Not invited

AlGaN/GaN heterostructure field-effect transistors with back-doping design for high-power applications: High current density with high transconductance characteristics
N. Maeda; K. Tsubaki; T. Saitoh; T. Tawara; N. Kobayashi
MRS Proc. ., 2002, Not refereed, Not invited

Longitudinal-optical-phonon-assisted resonant excitations of US quantum dots embedded in ZnSe/(ZnSe-MgS superlattice) microcavities
Suemune, I; T Tawara; H Kumano; H Yoshida
PHYSICA STATUS SOLIDI B-BASIC RESEARCH, Jan. 2002, Refereed, Not invited

Luminescence properties of CdS quantum dots embedded in monolithic II-VI microcavity
T Tawara; H Yoshida; H Kumano; S Tanaka; Suemune, I
PROCEEDINGS OF THE 25TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, PTS I AND II, 2001, Refereed, Not invited

LO phonon-assisted relaxations of photoexcited holes in type IICdS/ZnSe self-assembled quantum dots
H Kumano; H Yoshida; S Senoo; T Tawara; L Suemune
PROCEEDINGS OF THE 25TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, PTS I AND II, 2001, Refereed, Not invited

Microcavities with distributed Bragg reflectors based on ZnSe/MgS superlattice grown by MOVPE
T Tawara; H Yoshida; T Yogo; S Tanaka; Suemune, I
JOURNAL OF CRYSTAL GROWTH, Dec. 2000, Refereed, Not invited

Study of site change of Li impurities in ZnSe by co-doping with iodine
Suemune, I; H Ohsawa; T Tawara; H Machida; N Shimoyama
JOURNAL OF CRYSTAL GROWTH, Jun. 2000, Refereed, Not invited

MOVPE growth of ZnSe/ZnMgS distributed Bragg reflectors with high refractive-index contrast
T Tawara; Suemune, I; S Tanaka
JOURNAL OF CRYSTAL GROWTH, Jun. 2000, Refereed, Not invited

Origin of size distributions in ZnSe self-organized quantum dots grown on ZnS layers
T Tawara; S Tanaka; H Kumano; Suemune, I
JOURNAL OF ELECTRONIC MATERIALS, May 2000, Refereed, Not invited

Growth and luminescence properties of self-organized ZnSe quantum dots
T Tawara; S Tanaka; H Kumano; Suemune, I
APPLIED PHYSICS LETTERS, Jul. 1999, Refereed, Not invited

MOVPE growth of ZnSe/ZnS distributed Bragg reflectors on GaAs(100) and (311)B substrates
T Tawara; M Arita; K Uesugi; Suemune, I
JOURNAL OF CRYSTAL GROWTH, Feb. 1998, Refereed, Not invited

Stability of CdSe and ZnSe dots self-organized on semiconductor surfaces
Suemune, I; T Tawara; T Saitoh; K Uesugi
APPLIED PHYSICS LETTERS, Dec. 1997, Refereed, Not invited

ZnSe/ZnS distributed Bragg reflectors in the blue region grown on (311)B GaAs substrates
T Tawara; M Arita; K Uesugi; Suemune, I
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, Nov. 1997, Refereed, Not invited

Demonstration of atomic frequency comb time-multiplexed quantum memory protocol in ¹⁶⁷Er³⁺:Y₂SiO₅ under no magnetic field
安井翔一郎; 安井翔一郎; 平石真也; 石澤淳; 尾身博雄; 稲葉智宏; XU Xuejun; 鍜治怜奈; 足立智; 俵毅彦
応用物理学会春季学術講演会講演予稿集(CD-ROM), 2022

Generation of surface acoustic wave on an Er³⁺:Y₂SiO₅ crystal
太田竜一; XU Xuejun; 稲葉智宏; 眞田治樹; 石澤淳; 俵毅彦; 小栗克弥; 山口浩司; 岡本創
応用物理学会春季学術講演会講演予稿集(CD-ROM), 2022

光コヒーレント操作のためのエルビウム添加希土類結晶—Erbium Doped Rare-Earth Crystals for Optical Coherent Manipulation—希土類イオン量子・光機能の新展開
俵 毅彦
光学 = Japanese journal of optics : publication of the Optical Society of Japan, Oct. 2021

Effect of electronic temperature on spin dynamics for drifting spins
Kunihashi Yoji; Aragaki Shuntaro; Tanaka Yusuke; Sanada Haruki; Tawara Takehiko; Oguri Katsuya; Onomitsu Koji; Kohda Makoto; Nitta Junsaku; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 26 Feb. 2021

Investigation on the growth of Bi₂Te₃ thin films on CaF₂ and BaF₂ substrates by pulsed laser deposition
Tanaka Yusuke; Kunihashi Yoji; Krockenberger Yoshiharu; Sanada Haruki; Tawara Takehiko; Oguri Katsuya; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 26 Feb. 2021

Optical Signal Enhancement in Er-incorporated Rare-Earth Oxide Waveguides on Si
Xu Xuejun; Inaba Tomohiro; Tsuchizawa Tai; Ishizawa Atsushi; Tawara Takehiko; Omi Hiroo; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 26 Feb. 2021

High Q-factor Si microdisk resonators in the mid-infrared
miyake takuma; xu xuejun; sawano kentaro; maruizumi takuya; takehiko tawara; hideki gotoh
JSAP Annual Meetings Extended Abstracts, 26 Feb. 2021

Stacking-fault-driven formation of atomically-abrupt heterointerfaces in III-V nanowires
Zhang Guoqiang; Kouta Tateno; Takehiko Tawara; Hideki Gotoh
JSAP Annual Meetings Extended Abstracts, 26 Feb. 2021

Real-time monitoring of graphene CVD growth using UV-visible light
Ogawa Yui; Tawara Takehiko; Taniyasu Yoshitaka
JSAP Annual Meetings Extended Abstracts, 26 Feb. 2021

Frequency and time domain measurements of dephasing time in Λ type hyperfine sublevel system of ¹⁶⁷Er³⁺:Y₂SiO₅
安井翔一郎; 安井翔一郎; 平石真也; 平石真也; 石澤淳; 尾身博雄; 鍜治怜奈; 足立智; 俵毅彦
応用物理学会春季学術講演会講演予稿集(CD-ROM), 2021

Studies of growth conditions of Bi₂Te₃ on sapphire substrates by pulsed laser deposition
Tanaka Yusuke; Kunihashi Yoji; Krockenberger, Yoshiharu; Sanada Haruki; Tawara Takehiko; Oguri Katsuya; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 26 Aug. 2020

A compound semiconductor nanowire optomechanically coupled to a microsphere cavity
Asano Motoki; Zhang Guoqiang; Tawara Takehiko; Yamaguchi Hiroshi; Okamoto Hajime
JSAP Annual Meetings Extended Abstracts, 26 Aug. 2020

Strain engineering of the excited states of Er³⁺:Y₂SiO₅ using a mechanical resonator
Ohta Ryuichi; Bastidas Victor; Tawara Takehiko; Yamaguchi Hiroshi; Okamoto Hajime
JSAP Annual Meetings Extended Abstracts, 26 Aug. 2020

Controllable sulfur dopant concentration in InP nanowires revealed by NanoSIMS with nanoscale spatial resolution
Zhang Guoqiang; Tateno Kouta; Tawara Takehiko; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 26 Aug. 2020

Spin dynamics of electrons accumulated in light induced potential dots
Sanada Haruki; Kunihashi Yoji; M. Stramma Alexander; Tanaka Yusuke; Gotoh Hideki; Onomitsu Koji; Tagarelli Fedele; Kohda Makoto; Nitta Junsaku; Tawara Takehiko; Sogawa Tetsuomi
JSAP Annual Meetings Extended Abstracts, 28 Feb. 2020

Magnetically-induced spin component in GaAsBi epilayer
Kunihashi Yoji; Tanaka Yusuke; Sanada Haruki; Tawara Takehiko; Kohda Makoto; Nitta Junsaku; Hasegawa Sho; Nishinaka Hiroyuki; Yoshimoto Masahiro; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 28 Feb. 2020

Study on growth condition of single domain Bi₂Te₃ by pulsed laser deposition
Tanaka Yusuke; Kunihashi Yoji; Sanada Haruki; Omi Hiroo; Tawara Takehiko; Oguri Katsuya; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 28 Feb. 2020

Self-assembled semiconductor nanowire hierarchical nanostructures
Zhang Guoqiang; Tateno Kouta; Tawara Takehiko; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 28 Feb. 2020

Suspended Si waveguides with subwavelength grating cladding in the mid-infrared
Osako Rikito; Xu Xuejun; Tadanaga Osamu; Sawano Kentarou; Maruizumi Takuya; Tawara Takehiko; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 04 Sep. 2019

Strong impact of initial surface state on crystal quality of Gd₂O₃ growth on Si Substrates
Inaba Tomohiro; Xu Xuejun; Tawara Takehiko; Omi HIroo; Yamamoto Hideki; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 04 Sep. 2019

MBE growth of Si/Gd₂O₃heterostructure on Si substrates
Fili Viviana; Szuba Wojciech; Xu Xuejun; Inaba Tomohiro; Tawara Takehiko; Omi Hiroo; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 04 Sep. 2019

Optical Properties of Er-incorporated Rare-Earth Oxide in Horizontal Slot Waveguide
Xu Xuejun; Fili Viviana; Inaba Tomohiro; Tawara Takehiko; Omi Hiroo; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 04 Sep. 2019

Self-assembled hybrid nanowire-nanoparticle nanostructures
Zhang Guoqiang; Tateno Kouta; Tawara Takehiko; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 04 Sep. 2019

磁気的純化されたエルビウム希薄添加酸化物結晶の作製と光物性 : 量子情報操作プラットフォームをめざして—特集 新機能物質・材料創製研究の最前線
俵 毅彦; 稲葉 智宏
NTT技術ジャーナル / 日本電信電話株式会社 編, Aug. 2019

Evaluation of coherence time through photon echo in ¹⁶⁷Er³⁺:Y₂SiO₅
Hiraishi Masaya; Mark IJspeert; Tawara Takehiko; Adachi Satoru; Omi Hiroo; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 25 Feb. 2019

Mechanical modulation of the bound exciton lifetime in a GaAs resonator
Ohta Ryuichi; Okamoto Hajime; Tawara Takehiko; Gotoh Hideki; Yamaguchi Hiroshi
JSAP Annual Meetings Extended Abstracts, 25 Feb. 2019

自己触媒VLS成長法によるInP/InAsナノワイヤヘテロ構造—InP/InAs heterostructure nanowires grown by self-catalyzed vapor-liquid-solid mode—特集 ナノワイヤ成長技術の進展
Zhang Guoqiang; 俵 毅彦; 日比野 浩樹; 後藤 秀樹
日本結晶成長学会誌 Journal of the Japanese Association for Crystal Growth, 2019

InP/InAs heterostructure nanowires grown by self-catalyzed vapor-liquid-solid mode
Zhang Guoqiang; Tawara Takehiko; Hibino Hiroki; Gotoh Hideki
Journal of the Japanese Association for Crystal Growth, 2019, Not refereed

Formation of tin mediated GeSn nanodots by vacuum evaporation
Tsushima Kazuto; Takita Kensuke; Tawara Takehiko; Tateno Kouta; Zhang Guoqiang; Gotoh Hideki; Okamoto Hiroshi
JSAP Annual Meetings Extended Abstracts, 05 Sep. 2018

Optimization of buffer layer thickness of cerium oxide for non-spin bath host crystal
Inaba Tomohiro; Xu Xuejun; Wojciech Szuba; Tawara Takehiko; Omi Hiroo; Yamamoto Hideki; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 05 Sep. 2018

Design of Horizontal Slot Waveguides based on Er-doped Rare Earth Oxide on Si
Xu Xuejun; Szuba Wojciech; Inaba Tomohiro; Tawara Takehiko; Omi Hiroo; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 05 Sep. 2018

Radiative lifetime of bound excitons in GaAs with vibrational strain
Ohta Ryuichi; Okamoto Hajime; Tawara Takehiko; Gotoh Hideki; Yamaguchi Hiroshi
JSAP Annual Meetings Extended Abstracts, 05 Sep. 2018

Site-controlled vertical growth of InP nanowires by self-catalyzed VLS mode
Zhang Guoqiang; Tateno Kouta; Tawara Takehiko; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 05 Sep. 2018

Electrical performance improvement of InAs/InP nanowire telecom-band LED
Zhang Guoqiang; Takiguchi Masahito; Tateno Kouta; Tawara Takehiko; Notomi Masaya; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 05 Mar. 2018

Rabi Oscillation Between Hyperfine Levels in ¹⁶⁷Er³⁺:Y₂SiO₅
Hiraishi Masaya; IJspeert Mark; Tawara Takehiko; Omi Hiroo; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 05 Mar. 2018

Bi-mediated formation of Ge nanodots fabricated by vacuum evaporation
Tohoku-Section Joint Convention Record of Institutes of Electrical and Information Engineers, Japan, 2018

Study on the formation mechanism of Bi-mediated Ge nanodots fabricated by vacuum evaporation
対馬和都; 滝田健介; 中澤日出樹; 俵毅彦; 舘野功太; ZHANG Guoqiang; 後藤秀樹; 池田高之; 水野誠一郎; 岡本浩
電子情報通信学会技術研究報告, 2018

Self-organized formation of In(Ga)As and Ge nanodots mediated by bismuth
岡本 浩; 俵 毅彦; 舘野 功太; 章 国強; 後藤 秀樹
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 31 Aug. 2017

Bi-mediated formation of Ge nanodots by vacuum evaporation and low temperature annealing -3
Tsushima Kazuto; Takita Kensuke; Tawara Takehiko; Tateno Kouta; Zhang Guoqiang; Gotoh Hideki; Ikeda Takayuki; Mizuno Seiichiro; Okamoto Hiroshi
JSAP Annual Meetings Extended Abstracts, 25 Aug. 2017

Dynamic property of single InAs/InP nanowire light-emitting diodes
Takiguchi Masato; Zhang Guoqiang; Sasaki Satoshi; Nozaki Kengo; Chen Edward; Tawara Takehiko; Gotoh Hideki; Notomi Masaya
JSAP Annual Meetings Extended Abstracts, 25 Aug. 2017

Fabrication and characterization of a GaAs optical disk-mechanical beam hybrid structure
Asano Motoki; Ohta Ryuichi; Okamoto Hajime; Tawara Takehiko; Gotoh Hideki; Yamaguchi Hiroshi
JSAP Annual Meetings Extended Abstracts, 25 Aug. 2017

Telecom-band light emitting diodes based on InAs/InP heterostructure nanowires
Zhang Guoqiang; Takiguchi Masato; Kouta Tateno; Takehiko Tawara; Masaya Notomi; Hideki Gotoh
JSAP Annual Meetings Extended Abstracts, 25 Aug. 2017

Initialization of Λ-type three level system in Er³⁺ hyperfine levels
IJspeert Mark; Mariani Giacomo; Tawara Takehiko; Shimizu Kaoru; Omi Hiroo; Adachi Satoru; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 25 Aug. 2017

Strain-induced coupling of dark and bright states in bound excitons
Ohta Ryuichi; Okamoto Hajime; Tawara Takehiko; Gotoh Hideki; Yamaguchi Hiroshi
JSAP Annual Meetings Extended Abstracts, 25 Aug. 2017

Structure analysis and optical characterization of Er₂O₃/Y₂O₃ superlattices
Omi Hiroo; Hiraishi Masaya; Tawara Takehiko; Yamamoto Hideki
JSAP Annual Meetings Extended Abstracts, 25 Aug. 2017

Growth and Characterization of ¹⁶⁷Er doped Ca₂Y₈Si₆O₂₆ Single Crystal
Omi Hiroo; Tawara Takehiko; Shimizu Kaoru; Saito Shiro
JSAP Annual Meetings Extended Abstracts, 25 Aug. 2017

Molecular Beam Epitaxy of Er_xY_6-xWO₁₂ (x=6) Films on Silicon
Omi Hiroo; Tawara Takehiko; Yamamoto Hideki
JSAP Annual Meetings Extended Abstracts, 25 Aug. 2017

Bi-mediated formation of Ge nanodots by vacuum evaporation and low temperature annealing -1
Takita Kensuke; Tsushima Kazuto; Enta Yoshiharu; Tawara Takehiko; Tateno Kouta; Zhang Guoqiang; Gotoh Hideki; Ikeda Takayuki; Mizuno Seiichiro; Okamoto Hiroshi
JSAP Annual Meetings Extended Abstracts, 01 Mar. 2017

Bi-mediated formation of Ge nanodots by vacuum evaporation and low temperature annealing -2
Tsushima Kazuto; Takita Kensuke; Nakazawa Hideki; Enta Yoshiharu; Tawara Takehiko; Tateno Kouta; Zhang Guoqiang; Gotoh Hideki; Okamoto Hiroshi
JSAP Annual Meetings Extended Abstracts, 01 Mar. 2017

MBE growth of Er-doped cerium oxide for non-spin bath host crystal
Inaba Tomohiro; Tawara Takehiko; Omi Hiroo; Yamamoto Hideki; Goto Hideki
JSAP Annual Meetings Extended Abstracts, 01 Mar. 2017

Molecular beam epitaxy of Er₂O₃/Y₂O₃ superlattices
Omi Hiroo; Ito Yuki; Tawara Takehiko; Yamamoto Hideki
JSAP Annual Meetings Extended Abstracts, 01 Mar. 2017

Molecular beam epitaxy of nonmagnetic Y-W-O films on silicon
Omi Hiroo; Tawara Takehiko; Yamamoto Hideki
JSAP Annual Meetings Extended Abstracts, 01 Mar. 2017

Dephasing time in rare-earth 4f transitions with isotope separation
俵 毅彦; Mariani Giacomo; 清水 薫; 尾身 博雄; 足立 智; 後藤 秀樹
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 18 Jan. 2017

真空蒸着法によるBi 媒介Ge ナノドットの形成過程評価
滝田 健介; 対馬 和都; 遠田 義晴; 俵 毅彦; 舘野 功太; 章 国強; 後藤 秀樹; 岡本 浩
電気関係学会東北支部連合大会講演論文集, 2017

Observation of hyperfine level in Er³⁺
Tawara Takehiko; Mariani Giacomo; Shimizu Kaoru; Omi Hiroo; Adachi Satoru; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 01 Sep. 2016

Stimulated Raman adiabatic passage in erbium ions
Hamada Yuki; Tawara Takehiko; Apache Satoru; Llenas Aleix; Omi Hiroo; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 03 Mar. 2016

Determination of band structures of the (Er_xSc_1-x)₂O₃ films grown on Si(111) by MBE
Omi Hiroo; Blackstad Logan; Tawara Takehiko
JSAP Annual Meetings Extended Abstracts, 26 Feb. 2015

Inter- and intra-site energy transfers and upconversion under site selective excitation in (Sc, Er)₂O₃ thin films
Kawakami Yoshihiro; Tawara Takehiko; Omi Hiroo; Kaji Reina; Adachi Satoru
JSAP Annual Meetings Extended Abstracts, 26 Feb. 2015

Temperature dependence of coherent phonons in heavily doped Si
Kato Keiko; Oguri Katsuya; Sanada Haruki; Tawara Takehiko; Sogawa Tetsuomi; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 01 Sep. 2014

Energy transfer and nonradiative processes in (Er_xSc_1-x)₂O₃ thin films
Kawakami Yoshihiro; Kaji Reina; Adachi Satoru; Tawara Takehiko; Omi Hiroo
JSAP Annual Meetings Extended Abstracts, 01 Sep. 2014

Concentration dependence of occupation sites of Er³⁺ ions in (Er_1-xSc_x)₂O₃ films
Omi Hiroo; Tawara Takehiko; Kaji Reina; Adachi Satoru; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 01 Sep. 2014

Population transfer to higher states in Er2O3 thin films
Tawara Takehiko; Omi Hiroo; Najar Adel; Kaji Reina; Adachi Satoru; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 01 Sep. 2014

量子情報操作プラットフォームとしての希土類単結晶—特集 NTT物性科学基礎研究所における量子光学研究の最前線
俵 毅彦; 尾身 博雄
NTT技術ジャーナル / 日本電信電話株式会社 編, Jun. 2014

Wafer-scale Control of Self-assembling Nanostructures on Silicon for Silicon Photonics
OMI Hiroo; TAWARA Takehiko
Journal of the Japan Society for Precision Engineering, May 2014, Not refereed

EXAFS analyses on the (Sc_1-xEr_x)₂O₃ films grown on Si(111) by MBE
Omi Hiroo; Tawara Takehiko; Kaji Reina; Hozumi Takahito; Adachi Satoru; Goto Hideki; Sougawa Tetuomi
JSAP Annual Meetings Extended Abstracts, 03 Mar. 2014

Low temperature formation of Ge nanodots using Bi as a surfactant
Okamoto Hiroshi; Hayashi Kazuki; Kobayashi Yumika; Tawara Takehiko; Tateno Kouta; Zhang Guoqiang; Gotoh Hideki
JSAP Annual Meetings Extended Abstracts, 03 Mar. 2014

酸化エルビウムエピタキシャル薄膜の スカンジウム混晶化による光学特性の改善
俵 毅彦; 尾身 博雄; 穂積 貴人; 鍜治 怜奈; 足立 智; 後藤 秀樹; 寒川 哲臣
応用物理学会学術講演会講演予稿集, 31 Aug. 2013

Si基板上(Er_1-xSc_x)₂O₃のＭＢＥ成長
尾身 博雄; 俵 毅彦; 鍛冶 玲奈; 穂積 貴人; 足立 智; 後藤 秀樹; 寒川 哲臣
応用物理学会学術講演会講演予稿集, 31 Aug. 2013

ダブル誘導ラマン断熱通過による酸化エルビウム薄膜での量子ビット任意回転操作
川上 欣洋; 穂積 貴人; 鍜治 怜奈; 足立 智; 俵 毅彦; 尾身 博雄
応用物理学会学術講演会講演予稿集, 31 Aug. 2013

Electroluminescence from Er3+ incorporated into silicon oxide thin film on silicon in a scanning tunneling microscope (vol 6, 063503, 2012)
Jan Fiala; Hiroo Omi; Takehiko Tawara
JOURNAL OF NANOPHOTONICS, Jul. 2012, Not refereed, Not invited

DLTS evaluation of carrier injection and emission properties in In(Ga)As stacked quantum dot structure
SUZUKI Soichiro; SATO Shinya; IWASAKI Takuro; TAWARA Takehiko; TATENO Kouta; GOTOH Hideki; SOGAWA Tetsuomi; OKAMOTO Hiroshi
IEICE technical report, 03 Aug. 2011

Growth and characterization of telecom-wavelength quantum dots using Bi as a surfactant
OKAMOTO Hiroshi; TAWARA Takehiko; GOTOH Hideki; KAMADA Hidehiko; SOGAWA Tetsuomi
IEICE technical report, 03 Aug. 2009

p型Siにおけるコヒーレントフォノンダイナミクス
加藤景子; 石澤淳; 小栗克弥; 舘野功太; 俵毅彦; 中野秀俊
応用物理学関係連合講演会講演予稿集, 2009

四光波混合を用いた光の軌道角運動量の変換
上野雄鋭; 戸田泰則; 足立智; 森田隆二; 俵毅彦
応用物理学会学術講演会講演予稿集, 2009

通信波長帯単一光子・エンタングル光子対の生成と伝送—Single-photon and entangle photon pair generation and long-distance distribution in telecommunication bands—光物性と単一光子技術
鎌田 英彦; 俵 毅彦; 山口 貴雄
光学 = Japanese journal of optics : publication of the Optical Society of Japan, Aug. 2008

All-optical memory based on compound-semiconductor photonic crystal nanocavity
SHINYA Akihiko; MATSUO Shinji; Yosia; TANABE Takasumi; KURAMOCHI Eiichi; SATO Tomonari; KAKITSUKA Takaaki; TATENO Kouta; TAWARA Takehiko; NOTOMI Masaya
電子情報通信学会技術研究報告. OPE, 光エレクトロニクス, 20 Jun. 2008

四光波混合分光によるGaN励起子のトポロジカル解析
上野雄鋭; 上野雄鋭; 戸田泰則; 戸田泰則; 足立智; 森田隆二; 俵毅彦
応用物理学会学術講演会講演予稿集, 2008

Laser flash 私の見たCLEO/QELS 2007—Report on CLEO/QELS 2007
俵 毅彦; 赤羽 温; 小川 奏
レーザー研究 = The review of laser engineering : レーザー学会誌 / レーザー学会 編, Aug. 2007

微小光共振器による励起子--光子相互作用状態制御 (特集 NTT物性科学基礎研究所における光研究最前線)
俵 毅彦; 後藤 秀樹; 赤坂 哲也
NTT技術ジャ-ナル, Feb. 2006

Efficient observation of narrow isolated photoluminescence spectra from spatially localized excitons in InGaN quantum wells
H Gotoh; T Akasaka; T Tawara; Y Kobayashi; T Makimoto; H Nakano
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2005, Not refereed, Not invited

Comparison of AlGaN/GaN insulated gate heterostructure field-effect transistors with ultra-thin Al_2O_3/Si_3N_4 bilayer and with Si_3N_4 single layer
WANG Chengxin; MAEDA Narihiko; HIROKI Masanobu; TAWARA Takehiko; SAITOH Tadashi; MAKIMOTO Toshiki; KOBAYASHI Takashi; ENOKI Takotomo
Extended abstracts of the ... Conference on Solid State Devices and Materials, 15 Sep. 2004

Observation of InGaN cavity polaritons at room temperature
Takehiko Tawara; Hideki Gotoh; Tetsuya Akasaka; Naoki Kobayashi; Naoki Kobayashi; Tadashi Saitoh
OSA Trends in Optics and Photonics Series, 01 Jan. 2004, Not refereed, Not invited

Channel-Doped AlGaN/GaN Heterostructure Field-Effect Transistors with Al_2O_3/Si_3N_4 Gate Insulator
MAEDA Narihiko; TAWARA Takehiko; SAITOH Tadashi; TSUNBAKI Kotaro; KOBAYASHI Naoki
IEICE technical report. Electron devices, 13 Jun. 2003

ワイドギャップ半導体量子ドットの自己形成とフォトニック・ドットの選択成長--光・電子系の量子制御に向けて
末宗 幾夫; 上田 章雄; 俵 毅彦
電子科学研究 / 電子科学研究所広報委員会 編, 1999

Hybrid quantum systems
Y. Hirayama; K. Ishibashi; K. Nemoto, Contributor, Chapter 5. Rare earth “non-spin-bath” crystals for hybrid quantum systems
Springer, Jan. 2022
9811666784

Fundamental properties of semiconductor nanowires
Fukata, Naoki; Rurali, Riccardo, Contributor, Chapter 10. InP/InAs Quantum Heterostructure Nanowires Toward Telecom-Band Nanowire Lasers
Springer Nature Singapore, 2021
9789811590498

IOWN構想 ―インターネットの先へ
澤田 純; 井伊 基之; 川添 雄彦, Contributor, （章国強, 俵毅彦）ケーススタディ19：半導体ヘテロナノワイヤ-新半導体デバイスの可能性を拓く-
NTT出版, Nov. 2019
4757103913

Advanced Materials and their Applications: Micro to nano scale
Adel Najar; Hiroo Omi; Takehiko Tawara, Contributor, Chapter 8: Comparison of optical properties in ErxSc2-xSi2O7 and Er2-xYxSi2O7 silicate and their applications
One Central Press, Jun. 2017

低濃度167Er3+:Y2SiO5におけるAtomic frequency comb量子メモリの高効率化
安井翔一郎; 稲葉智宏; 石澤淳; 日達研一; 尾身博雄; 松浦求麿; 鍜治怜奈; 俵毅彦; 足立智; Xuehun Xu; 眞田治樹
2024年春季応用物理学会, Mar. 2024, Not invited

167Er3+:Y2SiO5結晶でのスピン状態保存時間のEr イオン濃度依存性
松浦求麿; 安井翔一郎; 鍜治怜奈; 俵毅彦; 足立智
2024年春季応用物理学会, Mar. 2024, Not invited

Erドープした希土類酸化膜導波路における光増幅の濃度依存性
徐学俊; 稲葉智宏; 相原卓磨; 石澤淳; 俵毅彦; 眞田治樹
2024年春季応用物理学会, Mar. 2024, Not invited

希土類スロット型光導波路のクラッド構造の最適化
藤巻隆之介; 櫻田勇人; 渡邉千愛; Xuejun Xu; 俵毅彦
2023年応物学会東北支部会, Dec. 2023, Not invited

InP/InAs単一ナノワイヤ発光の熱影響評価
田原光; 松本拓海; 松本怜; Guoqiang Zhang; 俵毅彦
2023年応物学会東北支部会, Dec. 2023, Not invited

167Er:Y2SiO5結晶のΛ型3準位のアンチホールの観測
鈴木拓真; 松崎善太郎; 濱崎妙子; 尾身博雄; 安井翔一郎; 稲葉智宏; Xuejun Xu; 足立智; 俵毅彦
2023年応物学会東北支部会, Dec. 2023, Not invited

167Er:Y2SiO5結晶の光量子メモリ応用に向けた3準位探索
松崎善太郎; 鈴木拓真; 濱崎妙子; 尾身博雄; 安井翔一郎; 稲葉智宏; Xuejun Xu; 足立智; 俵毅彦
2023年応物学会東北支部会, Dec. 2023, Not invited

167Er3+:Y2SiO5におけるZEFOZ遷移の利用によるスピン状態保存時間の伸長
松浦求麿; 安井翔一郎; 鍜治怜奈; 俵毅彦; 足立智
2023年秋季応用物理学会, Sep. 2023, Not invited

ベイズ最適化を用いたEr添加CeO2の熱処理条件探索
稲葉智宏; 徐学俊; 若林勇希; 大塚琢馬; 俵毅彦; 尾身博雄; 山本秀樹; 小栗克弥; 眞田治樹
2023年秋季応用物理学会, Sep. 2023, Not invited

微小機械構造を用いた長寿命な発光集合体の制御～励起準位の不均一広がりの圧搾～
太田竜一; 鳩村拓矢; 平石真也; Victor M. Bastidas; 徐学俊; 俵毅彦; William J. Munro; 山口浩司; 岡本 創
2023年秋季応用物理学会, Sep. 2023, Invited

Optical Detection of Trace Amounts of Er Ions in Silicon-based Rare Earth Oxide Thin Film Waveguides
S. Yasui; T. Inaba; K. Hitachi; A. Ishizawa; R. Kaji; T. Tawara; S. Adachi; X. Xu; H. Sanada
2023 International Conference on Solid State Devices and Materials (SSDM2023), Sep. 2023, Not invited

Development of comb transfer method for high efficiency atomic frequency comb quantum memory
S. Yasui; T. Inaba; A. Ishizawa; K. Hitachi; A. Ishizawa; H. Omi; R. Kaji; T. Tawara; S. Adachi; X. Xu; H. Sanada
22nd International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures (EDISON22), Aug. 2023, Not invited

Rare-earth crystals for optical quantum memory applications
T. Tawara
International Congress and Expo on Optics, Photonics and Lasers (EUROPL2023), Jun. 2023, Invited

Observation of the multiple acoustic phonon sidebands in erbium ions
R. Ohta; G. Lelu; X. Xu; T. Inaba; K. Hitachi; Y. Taniyasu; H. Sanada; A. Ishizawa; T. Tawara; K. Oguri; H. Yamaguchi; H. Okamoto
International Conf. on Nano-photonics and Nano-optelectronics 2023 (ICNN2023), Apr. 2023, Invited

信波長帯 Atomic Frequency Comb による Time bin qubit の量子メモリ実証
安井 翔一郎; 日達 研一; 尾身 博雄; 稲葉 智宏; Xu Xuejun; 眞田 治樹; 鍜治 怜奈; 足立 智; 俵 毅彦
2023年春季応物学会, Mar. 2023, Not invited

表面弾性波を用いたErイオンのフォノンアシスト光励起
太田竜一; Lelu Gregoire; 徐 学俊; 稲葉 智宏; 日達 研一; 谷保 芳孝; 眞田 治樹; 石澤 淳; 俵 毅彦; 小栗 克弥; 山口 浩司; 岡本 創
2023年春季応物学会, Mar. 2023, Not invited

表面フォノン放射を利用したテラヘルツ波発生における共振モードの解析
清田将生; 四方潤一; 大野誠吾; 俵毅彦
令和4年度日本表面真空学会東北・北海道支部学術講演会, Mar. 2023, Not invited

167Er3+:Y2SiO5におけるスピン状態保存の為の長コヒーレンス準位の探索
松浦求磨; 安井翔一郎; 鍜治怜奈; 俵毅彦; 足立智
第58回応用物理学会北海道支部／第19回日本光学会北海道支部合同学術講演会, Jan. 2023, Not invited

167Er:Y228SiO5結晶の作製と光学特性評価
鈴木拓真; 松崎善太郎; 尾身博雄; 安井翔一郎; Xuejun Xu; 稲葉智宏; 足立智; 俵毅彦
応用物理学会東北支部第77回学術講演会, Dec. 2022, Not invited

自己触媒VLS法InP/InAsヘテロナノワイヤ成長と通信波長帯光デバイス
章国強; 舘野功太; 俵毅彦; 日比野浩樹; 後藤秀樹
第51回結晶成長国内会議, Oct. 2022, Invited

Gd2O3バッファ層導入によるSOI基板上Er添加CeO2の発光特性改善
稲葉智宏; 徐学俊; 俵毅彦; 尾身博雄; 山本秀樹; 小栗克弥; 眞田治樹
2022年秋季応物学会, Sep. 2022, Not invited

Comb Transfer 法による Atomic Frequency Comb量子メモリの高効率化
安井翔一郎; 平石真也; 石澤淳; 尾身博雄; 稲葉智宏; Xuejun Xu; 鍜治怜奈; 足立智; 俵毅彦
2022年秋季応物学会, Sep. 2022, Invited

表面弾性波を用いたEr光励起の制御
太田竜一; 徐学俊; 稲葉智宏; 眞田治樹; 石澤淳; 俵毅彦; 小栗克弥; 岡本創
2022年秋季応物学会, Sep. 2022, Not invited

Erbium-doped Rare-Earth Oxide Thin Film Waveguides for Integrated Quantum Photonic Devices
X. Xu; M. Hiraishi; T. Inaba; T. Tsuchizawa; A. Ishizawa; H. Sanada; T. Tawara; J. Longdell; K. Oguri; H. Gotoh
CLEO Pacific Rim 2022, Aug. 2022, Not invited

Spectroscopic examination of optical coupling between erbium ions and microring resonators on Si-integrated on-chip devices
M. Hiraishi; T. Inaba; X. Xu; H. Sanada; T. Tsuchizawa; A. Ishizawa; T. Tawara; J. Longdell; K. Oguri; H. Gotoh
Dodd-Walls Symposium, Jul. 2022, Not invited

Remarkable Improvement of Atomic-Frequency-Comb Memory Efficiency by Comb Transfer Method in 167Er3+:Y2SiO5 under Zero Magnetic Field
S. Yasui; M. Hiraishi; A. Ishizawa; H. Omi; T. Inaba; X. Xu; R. Kaji; S. Adachi; T. Tawara
CLEO 2022, May 2022, Not invited

167Er:Y2SiO5における零磁場下での通信波長帯Atomic Frequency Comb時間多重量子メモリプロトコルの実証
安井翔一郎; 平石真也; 石澤淳; 尾身博雄; 稲葉智宏; Xuejun Xu; 鍜治怜奈; 足立智; 俵毅彦
2022年春季応物学会, Mar. 2022, Not invited

Er3+:Y2SiO5結晶上における表面弾性波の生成
太田竜一; 徐学俊; 稲葉智宏; 眞田治樹; 石澤淳; 俵毅彦; 小栗克弥; 山口浩司; 岡本創
2022年春季応物学会, Mar. 2022, Not invited

167Er:Y2SiO5におけるAtomic Frequency Comb多重量子メモリプロトコルの実証
安井翔一郎; 平石真也; 石澤淳; 尾身博雄; 稲葉智宏; Xuejun Xu; 鍜治怜奈; 足立智; 俵毅彦
第57回応用物理学会北海道支部学術講演会, Jan. 2022, Not invited

Micromechanical Control of the Optical Resonances of Erbium Ions
R. Ohta; L. Herpin; V. M. Bastidas; T. Tawara; H. Yamaguchi; H. Okamoto
International Symposium on Novel Materials and Quantum Technologies (ISNTT2021), Not invited

Photoluminescence Enhancement of Erbium Ions in Rare-earth Oxide Thin Films Using Si-based Microring Resonators
M. Hiraishi; T. Inaba; X. Xu; H. Sanada; T. Tsuchizawa; A. Ishizawa; T. Tawara; H. Omi; J. Longdell; K. Oguri; H. Gotoh
International Symposium on Novel Materials and Quantum Technologies (ISNTT2021), Not invited

Real-time ultraviolet optical imaging of graphene CVD growth
Y. Ogawa; T. Tawara; Y. Taniyasu
International Symposium on Novel Materials and Quantum Technologies (ISNTT2021), Not invited

Frequency and Time Domain Measurements of 167Er3+:Y2SiO5 by Stabilizing the Optical Frequency Using a Fiber Laser Comb
S. Yasui; M. Hiraishi; A. Ishizawa; H. Omi; R. Kaji; S. Adachi; T. Tawara
International Symposium on Novel Materials and Quantum Technologies (ISNTT2021)

Real-time monitoring of graphene CVD growth using ultraviolet reflection
Y. Ogawa; T. Tawara; Y. Taniyasu
Virtual Graphene 2021, Nov. 2021, Not invited

Optical Coupling between Er3+ and Integrated Microring Resonators on Si
M. Hiraishi; T. Inaba; X. Xu; H. Sanada; T. Tsuchizawa; A. Ishizawa; T. Tawara; H. Omi; J. Longdell; K. Oguri; H. Gotoh
2021年秋季応物学会, Sep. 2021, Not invited

量子情報プラットフォームとしてのEr添加固体材料の開発
俵 毅彦; 平石 真也; 稲葉 智宏; 徐 学俊; 太田 竜一; 足立 智; 尾身 博雄
2021年秋季応物学会, Sep. 2021, Invited

Evaluation of Homogeneous Linewidth of 167Er:Y2SiO5 in Frequency Domain Measurement using Laser Stabilization with Optical Frequency Comb
S. Yasui; M. Hiraishi; A. Ishizawa; H. Omi; R. Kaji; S. Adachi; T. Tawara
2021 International Conference on Solid State Devices and Materials (SSDM2021), Sep. 2021

Strain-Mediated Energy Control of Rare-Earth Ions Toward a Highly-Coherent Hybrid Opto-Mechanical System
R. Ohta; L. Herpin; V. Bastidas; T. Tawara; H. Yamaguchi; H. Okamoto
CLEO 2021, May 2021, Not invited

Mar. 2009 - Present
The Optical Society (OSA)

May 1996 - Present
応用物理学会

On-demand single and entangled photon emitter with quantum optical nonlinear effects
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 01 Apr. 2023 - 31 Mar. 2027
後藤 秀樹; 俵 毅彦; 国橋 要司; 章 国強; 徐 学俊; 眞田 治樹

高効率量子光メモリの創発へ向けた希土類イオン励起電子と機械振動の結合系の研究
日本学術振興会, 科学研究費助成事業, 01 Apr. 2023 - 31 Mar. 2026
太田 竜一; 岡本 創; 俵 毅彦; 徐 学俊

On-chip nuclear spin qubit platform based on individual erbium-167 ions in silicon photonic nanocavities for quantum repeaters
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 01 Apr. 2023 - 31 Mar. 2026

磁気的純化固体原子系の創成と量子メモリ応用に関する研究
日本学術振興会, 科学研究費助成事業, 01 Apr. 2022 - 31 Mar. 2025
俵 毅彦; 足立 智; 尾身 博雄; 徐 学俊; 稲葉 智宏

Verification of tristability of nuclear spin polarization in single quantum dot and construction of a unified model including nuclear quadrupole effect
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 01 Apr. 2021 - 31 Mar. 2024
足立 智; 俵 毅彦; 鍜治 怜奈; 笹倉 弘理

自己触媒成長技術によるシリコン基板上新規ナノワイヤ構造・レーザーデバイスの創出
日本学術振興会, 科学研究費助成事業, 01 Apr. 2021 - 31 Mar. 2024
章 国強; 俵 毅彦; 日比野 浩樹; 徐 学俊; 滝口 雅人

Development of rare-earth oxide based optical amplifiers and lasers integrated on Si by using magnetic light-matter interactions
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Apr. 2019 - Mar. 2022
Xu Xuejun

On-chip photon-electron coherent coupling using rare-earth oxide film optical waveguides
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Apr. 2019 - Mar. 2022
TAWARA Takehiko

Creation of on-demand entangled photon sources in solid state nanostructures
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Apr. 2016 - Mar. 2019
Gotoh Hideki

Creation of rare earth doped non-magnetic crystals fro quantum applications
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Apr. 2015 - Mar. 2019
Omi Hiroo

Photon-spin coherent coupling by non-spin-bus rare-earth photonic crystals
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Apr. 2016 - Mar. 2018
俵 毅彦

Study of low-temperature formation of group IV nanodots made by use of Bi surfactant and its device application
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Apr. 2014 - Mar. 2017
Hiroshi Okamoto; TAWARA Takehiko; TATENO Kouta; ZANG Guoqiang; SUZUKI Yoshihiro; TAKITA Kensuke; TUSHIMA Kazuto

Population manipulation and quantum memory application using erbium-oxide crystals
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Apr. 2012 - Mar. 2015
TAWARA Takehiko; OMI Hiroo; GOTOH Hideki; SOGAWA Tetsuomi; KURAMOCHI Eiichi; ADACHI Satoru

Quantum Correlation Photonics in Semiconductor Macroatoms with Ballistic Phonon Waves
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Apr. 2011 - Mar. 2014
GOTOH Hideki; TATENO Kouta; ONOMITSU Koji; TAWARA Takehiko; SANADA Haruki; ZHANG Goquiang; SOGAWA Tetsuomi; YAMAGUCHI Hiroshi

Study of the property of low-defect-density quantum dots for the purpose of developing high efficiency optical devices.
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2011 - 2013
OKAMOTO Hiroshi; TAWARA Takehiko

通信波長帯単一双極子による自然放出制御デバイスの研究開発
総務省, 戦略的情報通信研究開発推進事業, Apr. 2007 - Mar. 2009
俵 毅彦

Optical properties and spin manipulation in dynamic quantum nanostructures formed by surface acoustic waves
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), 2007 - 2009
SANADA Haruki; GOTOH Hideki; TAWARA Takehiko; YAMAGUCHI Hiroshi

Research on hexagonal boron nitride semiconductors
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), 2006 - 2009
KOBAYASHI Yasuyuki; MAKIMOTO Toshiki; AKASAKA Tetsuya; NISHIKAWA Atsushi; NAKANO Hidetoshi; GOTOH Hideki; TAWARA Takehiko; SANADA Haruki

特許4448324, 特開2005-189330, 特願2003-428020, 半導体光デバイス
寒川 哲臣, 後藤 秀樹, 俵 毅彦, 齊藤 正

特願PCT/JP2020/009939, 固体量子メモリ
太田 竜一, 俵 毅彦, 岡本 創, 山口 浩司

特願PCT/JP2019/0306741, アモルファス酸化シリコンを介した希土類酸化物結晶の成長
稲葉 智宏, 俵 毅彦, 尾身 博雄

特許6499613, 特開2017-151248, 特願2016-033065, 量子光学材料
尾身 博雄, 俵 毅彦, 清水 薫, 齊藤 志郎

特許6319806, 特開2016-152285, 特願2015-028251, 光素子
俵 毅彦, 尾身 博雄, 足立 智

特許6238360, 特開2016-003349, 特願2014-123112, ナノ構造の製造方法
俵 毅彦, 舘野 功太, 章 国強, 後藤 秀樹, 岡本 浩

特願2013-147283, 量子ビットの操作方法
足立 智, 俵 毅彦, 尾身 博雄

特許6086321, 特開2015-032722, 特願2013-162076, 光素子の製造方法
尾身 博雄, 俵 毅彦, 足立 智

特許5947148, 特開2014-038926, 特願2012-180037, 光素子および製造方法
尾身 博雄, 俵 毅彦, 牧本 俊樹

特許5952130, 特開2014-038927, 特願2012-180038, 光素子および製造方法
尾身 博雄, 俵 毅彦, 牧本 俊樹

特許5689832, 特開2013-165146, 特願2012-026964, シリコン発光素子およびその製造方法
尾身 博雄, 小野 行徳, 俵 毅彦

特許5600086, 特開2013-048136, 特願2011-185561, 光素子およびその製造方法
尾身 博雄, 俵 毅彦, 牧本 俊樹

特願2005-217209, 半導体発光素子
後藤 秀樹, 俵 毅彦, 赤坂 哲也, 小林 康之, 中野 秀俊, 牧本 俊樹

特願2004-141484, 光共振器および光共振器の製造方法
俵 毅彦, 齊藤 正, 後藤 秀樹, 赤坂 哲也