2024年度

"Ultra-broadband quantum infrared spectroscopy"（口頭）
T. Tashima, Y. Mukai, M. Arahata, N. Oda, M. Hisamitsu, K. Tokuda, R. Okamoto, S. Takeuchi
ISNTT（International School and Symposium on Nanodevices and quanTum Technologies (ISNTT) 2024）, Dec 3, 2024

"Detection performance of the superconducting wide strip photon detector for 2 μm wavelength photons"（ポスター）
藪野正裕、知名史博、寺井弘高、三木茂人
Single Photon Workshop 2024 (Edinburgh, UK), Nov 20, 2024

"Superconducting signal processor with high-speed operation for superconducting nanostrip photon detectors"（ポスター）
宮嶋茂之、藪野正裕、寺井弘高、三木茂人
Single Photon Workshop 2024 (Edinburgh, UK), Nov 20, 2024

"Quantum sensing using ultra-broadband"（ポスター）
S. Takeuchi
Sensing with Quantum Light 2024, Oct 30, 2024

"Spectral resolution of quantum infrared spectros-copy with pulsed laser excitation"（口頭）
J. Kaur, Y. Mukai, R. Okamoto, S. Takeuchi
Sensing with Quantum Light 2024, Oct 28, 2024

"Ultra-broadband quantum infrared spectroscopy"（ポスター）
T. Tashima, Y. Mukai, M. Arahata, N. Oda, M. Hisamitsu, K. Tokuda, R. Okamoto, S. Takeuchi
QI2024/7th IFQMS, Oct 22, 2024

"Single photon emission from defect centers in hexagonal boron nitride with selective anti-Stokes excitation"（ポスター）
Y. Okashiro, H. Takashima, K. Shimazaki, K. Suzuki, Y. Mukai, S. Takeuchi
QI2024/7th IFQMS, Oct 22, 2024

"Superconducting nanostrip photon detector for mid infrared wavelength region"（ポスター）
三木茂人、美馬覚、知名史博、藪野正裕、寺井弘高
QI2024/7th IFQMS, Oct 22, 2024

"Quantum sensing using entangled photons"（口頭）
S. Takeuchi
ISOM'24(International Symposium on Imaging, Sensing, and Optical Memory), Oct 21, 2024

"Cryogenic coincidence circuits with short time window based on single flux quantum circuit with 10 kA/cm2 fabrication process"（口頭）
宮嶋茂之、寺井弘高、三木茂人
17th Superconducting SFQ VLSI Workshop (SSV2024), Oct 12, 2024

"Spectral resolution of quantum Fourier transform infrared spectroscopy using pulsed laser excitation"（口頭）
J. Kaur, Y. Mukai, R. Okamoto, S. Takeuchi
The 85th JSAP Autumn Meeting 2024, Sep 20, 2024

"Infrared Entangled Photon Sources for Quantum Sensing"（口頭）
M. Hojo, K. Tanaka
CLEO-PR 2024 (Korea), Aug 4, 2024

"Selective anti-Stokes excitation of a single defect center in hexagonal boron"（口頭）
Y. Okashiro, H. Takashima, K. Shimazaki, K. Suzuki, Y. Mukai, I. Aharonovich ,S.Takeuchi
Charlotte Convention Center（CLEO2024）, May 6, 2024

"Quantum information technologies using photons -entangled photon sources, single light emitters, and their applications -"（口頭）
S. Takeuchi
The 19th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, May 3, 2024

"Quantum Infrared Spectroscopy with Pulsed Laser Excitation: Towards Ultrafast Infrared Spectroscopy"（ポスター）
J. Kaur, Y. Mukai, R. Okamoto, S. Takeuchi
International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, Mar 12, 2024

"Quantum Sensing Using Entangled Photons"（口頭）
S. Takeuchi, Y. Mukai, T. Tashima, N. Abe, Y. Eto, R. Okamoto
International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, Mar 12, 2024

"Adjacent-mode Coherence Measurement for Efficient Evaluation of Dimension of Frequency-entangled Photon Pairs"（ポスター）
H. Gotoh, R. Okamoto, B. E. Little, S. T. CHU, S. Takeuchi
International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, Mar 12, 2024

"A W-state Analyzer for Photonic Qubits"（ポスター）
G. Park, R. Okamoto, H. F. Hofmann, S. Takeuchi
International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, Mar 12, 2024

"Cryogenic Evaluation of Nanodiamonds Containing Silicon-Vacancy Centers Created by lon Implantation"（ポスター）
K. Shimazaki, K. Suzuki, K. Sakamoto, Y. Okashiro, H. Abe, T. Ohshima, H. Takashima, S. Takeuchi
International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, Mar 12, 2024

"Toward Fabrication of NanoFiber Bragg Cavity Operating at Cryogenic Temperature frequency-entangled photons"（口頭）
K. Sakamoto, K. Shimazaki, H. Takashima, S. Takeuchi
International Symposia on Creation of Advanced Photonic and Electronic Devices 2025 and Advanced Quantum Technology for Future 2025, Mar 12, 2024

2023年度

"Quantum enhanced optical sensing using entangled light"（口頭）
R. Okamoto, Y. Mukai and S. Takeuchi
International Symposium on Creation of Advanced Photonic and Electronic Devices 2024, March 5, 2024

"Experimental demonstration of W-state projection measurement based on cyclic qubit-shift symmetry"（ポスター）
G. Park, R. Okamoto, H. F. Hofmann and S. Takeuchi
International Symposium on Creation of Advanced Photonic and Electronic Devices 2024, March 5, 2024

"Study on spectral resolution of quantum fourier transform infrared spectroscopy"（ポスター）
J. Kaur, Y. Mukai, R. Okamoto and S. Takeuchi
International Symposium on Creation of Advanced Photonic and Electronic Devices 2024, March 5, 2024

"Cryogenic temperature evalution of nanodiamonds containing silicon-vacancy centers by Ion implantation"（ポスター）
K. Shimazaki, K. Suzuki, K. Sakamoto, Y. Okashiro, H. Abe, T. Ohshima, H. Takashima and S. Takeuchi
International Symposium on Creation of Advanced Photonic and Electronic Devices 2024, March 5, 2024

"Ultra-broadband quantum infrared spectroscopy"（口頭）
S. Takeuchi, T. Tashima
SPIE Photonics West 2024, February 1, 2024

"Experimental criteria for the classification of multi-photon correlations"（ポスター）
G. Park, R. Okamoto, H. F. Hofmann and S. Takeuchi
QI2023/6th IFQMS, November 16, 2023

"Quantum infrared spectroscopy with ATR method"（ポスター）
T. Kurita, R. Okamoto, M. Arahata, T. Tashima, H. Ota, K. Tokuda and S. Takeuchi
QI2023/6th IFQMS, November 16, 2023

"Evaluation of a superconducting nanostrip single photon detector for mid-infrared wavelengths"（ポスター）
Satoru Mima, Fumihiro China, Masahiro Yabuno, Shigeyuki Miyajima, Shigehito Miki, Yuki Gama, Toshiyuki Tashima, Masaya Arahata, Yu Mukai, Ryo Okamoto, Shigeki Takeuchi, Hirotaka Terai
QI2023/6th IFQMS, November 16, 2023

"Photonic quantum science and technology"（口頭）
S. Takeuchi
Okinawa School in Physics 2023 : Coherent Quantum Dynamics, October 1, 2023

"Density control of single-photon sources formed at a SiO2/SiC interfac"（ポスター）
M. Kaneko, H. Takashima, S. Takeuchi and T. Kimoto
Int. Conf. on Silicon Carbide and Related Materials 2023, September 20, 2023

"Ultra-broadband quantum infrared spectriscopy"
S. Takeuchi
Quantum2023, September 13, 2023

"Experimental demonstration of multiphoton quantum correlation beyond the linear optics limit"（口頭）
G. Park, R. Okamoto, H. F. Holger, S.Takeuchi
Quantum2023, September 13, 2023

"Generation and manipulation of broadband frequency entangled photons"（ポスター）
S. Takeuchi
SPIE Optics+Photonics, August 21, 2023

"Effect of pump laser linewidth on nonlinear quantum interferometric fringes"（ポスター）
J. Kaur, Y. Mukai, R. Okamoto and S. Takeuchi
SPIE Optics+Photonics, August 21, 2023

"Quantum information technologies using photons-entangled photon sources, single light emitters, and their applications-"（口頭）
S. Takeuchi
KU-VUW Joint Workshop 2023, June 29, 2023

"Second-order nonlinearity of excitons in hBN-encapsulated monolayer transition metal dichalcogenides"（口頭）
Shinya Takahashi, Satoshi Kusaba, Kenji Watanabe
CLEO-EUROPE 2023, June 16, 2023

2022年度

"Efficient and broadband generation of visible-infrared entangled photon pairs using a ridge waveguide quasi-phase-matched device"（ポスター）
M. Arahata, B. Cao, Y. Mukai, T. Tashima, M. Hisamitsu, K. T Okuda, R. Okamoto, S. Takeuchi
International Symposium on Creation of Advanced Photonic and Electronic Devices 2023, March 14, 2023

"Analysis of Conditional Quantum Coherence in Two-photon Multi-mode States Beyond Linear Optical Limits"（ポスター）
G. Park, R. Okamoto, H. F. Hofmann, S. Takeuchi
International Symposium on Creation of Advanced Photonic and Electronic Devices 2023, March 14, 2023

"Creation of Single SiV Centers in Nanodiamonds by Ion Implantation"（ポスター）
K. Shimazaki, K. Suzuki, H. Takashima, H. Abe, T. Ohshima, S. Takeuchi
International Symposium on Creation of Advanced Photonic and Electronic Devices 2023, March 14, 2023

"Effect of Pump Laser Linewidth on Nonlinear Quantum Interferometic Fringes"（ポスター）
J. Kaur, Y. Mukai, R. Okamoto, S. Takeuchi
International Symposium on Creation of Advanced Photonic and Electronic Devices 2023, March 14, 2023

"Petal-Shaped Beam Generation for a Two-dimensional Quantum Walk with Helical Boundary Conditions"（ポスター）
Y. Okamoto, H. Obuse, S. Takeuchi ,R. Okamoto
International Symposium on Creation of Advanced Photonic and Electronic Devices 2023, March 14, 2023

"Quantum science and technology using entangled photons"（口頭）
S. Takeuchi
The 23rd RIES-Hokudai International Symposium拓[Taku] , December 5, 2022

"Creation of Silicon Vacancy Centers in Detonation Nanodiamonds by High Temperature Annealing"（ポスター）
K. Shimazaki, H. Kawaguchi, H. Takashima, T. Segawa, F. So, D. Terada, S. Onoda, T. Ohshima, S. Takeuchi
The 23rd RIES-Hokudai International Symposium拓[Taku], December 5, 2022

"Highly efficient and ultra-broadband photon pair source using chirped quasiphase matching slab waveguide matching slab waveguide"（口頭）
B. Cao, K. Hayama, S. Suezawa, M. Hisamitsu, K. Tokuda, S. Kurimura, R. Okamoto, S.T akeuchi
5th IFQMS / QI 2022, November 29, 2022

"Effect of pump laser linewidth on nonlinear quantum interferometric fringes"（口頭）
J. Kaur, Y. Mukai, R. Okamoto, S. Takeuchi
5th IFQMS / QI 2022, November 29, 2022

"Evaluation of a superconducting nanowire single photon detector for mid-infrared wavelengths"（口頭）
S. Mima, F. China, M. Yabuno, S. Miyajima, S. Miki, Y. Gama, T. Tashima, M. Arahata, Y. Mukai, R. Okamoto, S. Takeuch, H. Terai
5th IFQMS / QI 2022, November 29, 2022

"Efficient superconducting nanostrip single-photon detectors for 2 μm wavelength"（口頭）
F. China, S. Mima, S. Miki, M. Yabuno, S. Miyajima, H. Terai
5th IFQMS / QI 2022, November 29, 2022

"Development of superconducting nanostrip single-photon detectors for 2 ㎛ wavelength"（ポスター）
F. China, S. Mima, S. Miki, M. Yabuno, S. Miyajima, H. Terai
The Applied Superconductivity Conference（ASC2022）, October 25, 2022

"Experimental generation of two-photon three-mode non-Fock state using remote state preparation"（口頭）
G. Park, R. Okamoto, H. F. Hofmann, S. Takeuchi
APPC15, August 25, 2022

"Photonic quantum sensing: from absorption measurement to quantum state estimation"（口頭）
R. Okamoto
APPC15, August 24, 2022

"The effect of the finite linewidth of the pump laser on a nonlinear quantum interferometer"（ポスター）
J. Kaur, Y. Mukai, R. Okamoto, S. Takeuchi
APPC15, August 24, 2022

"Frequency-entangled photon sources and their application to quantum sensing"（口頭）
S. Takeuchi
SPIE Optics+Photonics 2022, August 21, 2022

"Quantum Fourier-transform infrared spectroscopy in the far-infrared region"（口頭）
Y. Mukai, R. Okamoto, S. Takeuchi
CLEO-PR2022/ISOM'22/ODF'22, August 4, 2022

"Creation of Sillicon Vacancy Center in Detonation Nanodiamonds by High Temperature Annealing"（口頭）
K. Shimazaki, H. Kawaguchi, H. Takashima, T. Segawa, F. So, D. Terada, S. Onoda, T. Ohshima, M. Shirakawa, S. Takeuchi
CLEO-PR2022/ISOM'22/ODF'22, August 4, 2022

"Development of next generation superconducting nanostrip single photon detection technology"（ポスター）
S. Miki, M. Yabuno, S. Miyajima, F. China, H. Terai
CLEO Pacific Rim, CLEO-PR 2022, August 4, 2022

"Nanophotonics for quantum information and quantum sensing"（口頭）
H. Takashima, A. Fukuda, H. Kawaguchi, K. Fukushige, K. Shimazaki, T. Tashima, S. Takeuchi
The 20th International Symposium on the Physics of Semiconductors and Applications (ISPSA2022), July 18, 2022

"High-efficiency infrared-light up-conversion detection system with picosecond time gate using repetition-synchronized fiber lasers"（ポスター）
北條真之、谷峻太郎、小林洋平、田中耕一郎
Optical Terahertz Science and Technology, June 19, 2022

2021年度

"Efficient generation and evaluation of single photons propagating in the multiple optical modes"（口頭）
S. Takeuchi, T. Kiyohara. R. Okamoto
Photonics West 2022 On Demand, February 26, 2022

"Efficient entangled photon sources and their applications"（口頭）
S. Takeuchi
Sensing with Quantum Light 754. WE-Heraeus-Seminar, September 27, 2021

"A wavelength variable visible-infrared photon pair source via spontaneous parametric downconversion in the mid-infrared region"（ポスター）
M. Arahata, Y. Mukai, T. Tashima, B. Cao, R. Okamoto, S. Takeuchi
Sensing with Quantum Light 754. WE-Heraeus-Seminar, September 27, 2021

"Complex transmittance measurements using quantum Fourier-transform infrared spectroscopy"（ポスター）
Y. Muaki, M. Arahata, T. Tashima, R. Okamoto, S.Takeuchi
Sensing with Quantum Light 754. WE-Heraeus-Seminar, September 27, 2021

"A wavelength variable visible-infared photon pair source using a LiNbO₃ crystal in the mid-infrared redion"（口頭）
M. Arahata, Y. Mukai, B. Cao, R. Okamoto, S. Takeuchi
SPIE Optical Engineering + Applications, August 2, 2021

"Efficient analysis of entangled photons and single photons"（口頭）
S. Takeuchi
SPIE Optical Engineering + Applications, August 1, 2021

"Signature of 2p exciton in hBN-encapsulated monolayer MoSe2 revealed by sum frequency generation spectroscopy"（口頭）
S. Takahashi, S. Kusaba, K. Tanaka
CLEO/Europe-EQEC 2021, June 25, 2021

"Dark Exciton Formation and Relaxation Dynamics in Monolayer WSe2"（ポスター）
S. Kusaba, K. Watanabe, T. Taniguchi, K. Yanagi, K. Tanaka
CLEO/Europe-EQEC 2021, June 23, 2021

2020年度

"Realization of sequential adaptive quantum state estimation and application to a single photon emitter"（ポスター）
S.Nohara, H.Takashima, R.Okamoto, A.Fujiwara and S.Takeuchi
International Symposium on Creation of Adcvanced Photonic and Electronic Devices 2021, March 10, 2021

"Frequency correlated photon generation at telecom band using silicon nitride ring cavities"（ポスター）
K.Sugiura, Z.Yin, H.Takashima, R.Okamoto, F.Qiu, S.Yokoyama and S.Takeuchi
International Symposium on Creation of Adcvanced Photonic and Electronic Devices 2021, March 10, 2021

"Direct observation of parametric fluorescence in the mid-infrared region using an InSb detector"（ポスター）
M.Arahata, Y.Mukai, B.Cao, T.Tashima, R.Okamoto and S.Takeuchi
International Symposium on Creation of Adcvanced Photonic and Electronic Devices 2021, March 10, 2021

"Generation of heralded non-Fock state and verification of coherence"（ポスター）
G.Park, I Matsumoto, T.Kiyohara, R.Okamoto, H F. Hofmann and S.Takeuchi
International Symposium on Creation of Adcvanced Photonic and Electronic Devices 2021, March 10, 2021

"Fablication of SiV centers inside nanodiamonds using ion implantation"（ポスター）
K.Shimazaki, H.Takashima, A.Fukuda, A.W Andreas, T.Tashima, H.Abe, S.Onoda, T.Ohshima and S.Takeuchi
International Symposium on Creation of Adcvanced Photonic and Electronic Devices 2021, March 10, 2021

"Photonic quantum sensing using frequency entangled photons-infrared quantum abosrption spectroscopy-"（口頭）
Y.Mukai,T.Tashima, B.Cao, N.Abe, R.Okamoto and S Takeuchi
The 3rd International Forum on Quantum Metrology and Sensing, December 17, 2020

"Fabrication of SiV Centers inside Nanodiamonds Using ion implantation"（口頭）
K.Shimazaki, H.Takashima, A.Fukuda, A.W Andreas, T.Tashima, H.Abe, S.Onoda, T.Ohshima and S.Takeuchi
The 3rd International Forum on Quantum Metrology and Sensing, December 17, 2020

"Demonstration of Three-Dimensional High-Resolution Quantum Optical Coherence Tomography Using Frequency-Entangled Photon Pairs"（口頭）
N.Abe, T.Horino, Y.Kawaguchi, B.Cao, R.Okamoto and S.Takeuchi
The 3rd International Forum on Quantum Metrology and Sensing, December 17, 2020

"Direct observation of parametric fluorescence in the mid-infrared region using an InSb detector"（口頭）
M.Arahata, Y.Mukai, T.Tashima, B.Cao, R.Okamoto and S.Takeuchi
The 3rd International Forum on Quantum Metrology and Sensing, December 17, 2020

"Direct generation of two frequency-entangled photon pairs by quasi-phase-matched parametric down-conversion"（口頭）
M.Hojo, K.Tanaka
The 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW), November 13, 2020

"Quantum sensing using entangled photons"（口頭）
S.Takeuchi
The 81st JSAP Autum Meeting 2020 JSAP-OSA Joint Symposia 2020, September 10, 2020

"Photonic quantum sensing using entangled photons"（口頭）
S.Takeuchi
Sensing with Quantun Light 2020, September 7, 2020

"Nanofiber integrated single light emitters for efficient single photon"（口頭）
S.Takeuchi
SPIE Optics+Photonics 2020 Digital, August 24, 2020

"Quantum sensing using entangled photons"(口頭）
S.Takeuchi
India-Japan webinar on quantum technologies, July 28, 2020

"Highly efficient broadband frequency entangled photon pair sources for optical quantum applications"（口頭）
B.Cao, K.Hayama, M.Hisamitsu, K.Tokuda, S.Kurimura, R.Okamoto and S.Takeuchi
CLEO Virtual Technical Conference, May 14, 2020

2019年度

"Experimental demonstration of adaptive quantum state estimation for dynamic quantum states"
S.Nohara, R.Okamoto, A.Fujiwara, S.Takeuchi
International Symposium on Creation of Advanced Photonic and Electronic Devices 2020, Kyoto, Japan, March 10, 2020

"Efficient coupling of Type-I degenerate parametric down converted photon pairs into a single-mode fiber"
G.Park, T.Kiyohara, R.Okamoto and S.Takeuchi
International Symposium on Creation of Advanced Photonic and Electronic Devices 2020, Kyoto, Japan, March 10, 2020

”Confirmation of the frequency correlation of the photon-pairs generated in a ring resonator”
K.Sugiura, R.Okamoto, S T.Chu, B E.Little and S.Takeuchi
International Symposium on Creation of Advanced Photonic and Electronic Devices 2020, Kyoto, Japan, March 10, 2020

"Highly Efficient Broadband Frequency Entangled-Photon Sources"
B.Cao, K.Hayama, Y.Kamei, R.Okamoto, M.Hisamitsu, K.Tokuda,and S.Takeuchi
The 2nd IFQMS, Kyoto, Japan, December 18, 2019"

"Visible-infrared Entangled Photon Sources using Periodically Poled SLT Devices"
T.Tashima,Y.Mukai, M.Arahata, Y.Gama, M.Hisamitsu, K.Tokuda, R.Okamoto and S.Takeuchi
The 2nd IFQMS, Kyoto, Japan, December 17, 2019

"Tunable Broadband Visible-Infrared Entangled Photon Source using a LiNbO₃ Crystal"
M.Arahata, B.Cao, T.Tashima, Y.Mukai, R.Okamoto and S.Takeuchi
The 2nd IFQMS, Kyoto, Japan, December 17, 2019

"Towards Broadband Infrared Quantum Absorption Spectroscopy Based on Nonlinear Interferometer"
Y.Mukai, T.Tashima, M.Arahata, R.Okamoto and S.Takeuchi
The 2nd IFQMS, Kyoto, Japan, December 17, 2019

"Quantum sensing using entangled photons"
S.Takeuchi
The 2nd IFQMS, Kyoto, Japan, December 17, 2019

"On-chip Broadband Entangled Photon Sources Using HICDG and SiN Waveguide Devices"
K.Sugiura, Z.Yin, X.Cheng, H.Takashima, R.Okamoto, L.Zhang, L.Kang, J.Chen, P.Wu, S T.Chu, B E.Little, S.Yokoyama and S.Takeuchi
The 2nd IFQMS, Kyoto, Japan, December 17, 2019

"Experimental Demonstration of Adaptive Quantum State Estimation for Dynamic Quantum States"
S.Nohara, R.Okamoto, A.Fujiwara, S.Takeuchi
The 2nd IFQMS, Kyoto, Japan, December 17, 2019

"Nanofiber integrated single light emitters for efficient single photon sources"
S.Takeuchi
ICAMD, Jeju, Korea, December 11, 2019

"Fabrication of high-Q factor nanofiber Bragg cavity using a helium ion microscope"
H.Takashima, A.Fukuda, H.Maruya, T.Tashima, A.W. Schell, and S.Takeuchi
AVS 66th ISE 2019, Munich, Germany, October 24, 2019

"Nanofiber Integrated Single Light Emitters for EfficientSingle Photon Sources"
S.Takeuchi
Laser Physics Workshop 2019, Gyeongju, Korea, July 9, 2019

"Enhanced direct optical excitation of an NV center via Nanofiber Bragg-cavity : A numerical simulation"
T.Tashima, H.Takashima and S.Takeuchi
Cleo/Europe-EQEC 2019, Munich, Germany, June 26, 2019

"Nanofiber integrated single light emitters for efficient single photon sources"
S.Takeuchi
Quantum 2019, Torino, Italy, May 31, 2019

"Time-resolved excitonic Lyman spectroscopy in diamond"
Tomoaki Ichii, Nobuko Naka, and Koichiro Tanaka
Optical Terahertz Science and Technology 2019,  Santa Fe, USA, March 9-11, 2019

ページトップ