Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
OCS, CS (Joint) |
2024-01-11 13:50 |
Kagoshima |
|
20-GHz clocked quantum key distribution using two-stage Mach-Zehnder intensity modulation Atsushi Taniguchi, Yasuyuki Sanari, Hirokazu Takahashi, Kazuaki Obana, Hideki Nishizawa, Koichi Takasugi, Hsin-Pin Lo, Takuya Ikuta, Toshimori Honjo, Hiroki Takesue (NTT) CS2023-95 |
We demonstrated the first 20-GHz clocked quantum key distribution using 2-stage Mach-Zehnder intensity modulation. A 41.... [more] |
CS2023-95 pp.10-12 |
CCS, IN (Joint) |
2023-08-04 10:58 |
Hokkaido |
Banya-no-yu |
Resource Allocation Optimization in Multi-User NOMA Systems Using Higher-Order Hamiltonians Shuho Ishibashi, Ohtsuka Teppei, Maki Arai (TUS), Aohan Li (UEC), Hiroki Takesue, Kensuke Inaba (NTT), Kazuyuki Aihara (UT), Mikio Hasegawa (TUS) CCS2023-24 |
Non-Orthogonal Multiple Access (NOMA) is a next-generation communication technology in which multiple users share a sing... [more] |
CCS2023-24 pp.37-42 |
SR |
2022-05-13 13:30 |
Tokyo |
NICT Koganei (Primary: On-site, Secondary: Online) |
[Invited Talk]
Computation with optical parametric oscillator networks Hiroki Takesue, Takahiro Inagaki, Kensuke Inaba, Takuya Ikuta, Yasuhiro Yamada, Yuya Yonezu, Toshimori Honjo (NTT) SR2022-15 |
We present our recent effort to realize computations that efficiently solve difficult problems such as combinatorial opt... [more] |
SR2022-15 pp.67-69 |
QIT (2nd) |
2021-11-30 17:20 |
Online |
Online |
Scalable implementation of (2^N+1) mutually unbiased basis measurement for 2^N-dimensional quantum states Takuya Ikuta (NTT/Osaka Univ.), Seiseki Akibue, Yuya Yonezu, Toshimori Honjo, Hiroki Takesue (NTT), Kyo Inoue (Osaka Univ.) |
(To be available after the conference date) [more] |
|
MIKA (2nd) |
2019-10-04 10:15 |
Hokkaido |
Hokkaido Univ. |
[Poster Presentation]
Optimization of Channel Allocation and Transmission Power for D2D Communication Using Coherent Ising Machine Yuchang Jiang, Hirotake Ito, Shoya Kobayashi (TUS), Hiroki Takesue (NTT), Kazuyuki Aihara (UT), Mikio Hasegawa (TUS) |
The effectiveness of a high-speed combinatorial optimization method using a coherent Ising machine (CIM) has been shown.... [more] |
|
NS, IN, CS, NV (Joint) |
2019-09-05 14:30 |
Miyagi |
Research Institute of Electrical Communication, Tohoku Univ. |
[Special Invited Talk]
Quantum communication experiments Hiroki Takesue (NTT) |
[more] |
|
LQE, LSJ |
2019-05-30 16:25 |
Shiga |
|
[Invited Talk]
Quantum optics experiments at NTT
-- Quantum communication, integrated quantum photonics, and coherent Ising machine -- Hiroki Takesue (NTT) LQE2019-15 |
[more] |
LQE2019-15 p.17 |
IPSJ-SLDM, RECONF, VLD, CPSY, IPSJ-ARC [detail] |
2019-01-30 15:05 |
Kanagawa |
Raiosha, Hiyoshi Campus, Keio University |
Design and implementation of FPGA measurement feedback system in Coherent Ising Machine Toshimori Honjo, Takahiro Inagaki, Kensuke Inaba, Takuya Ikuta, Hiroki Takesue (NTT) VLD2018-78 CPSY2018-88 RECONF2018-52 |
To solve combinatorial optimization problems, the way to utilize new type of computer that can find ground state of Isin... [more] |
VLD2018-78 CPSY2018-88 RECONF2018-52 pp.37-42 |
NLP, CCS |
2018-06-10 09:30 |
Kyoto |
Kyoto Terrsa |
Performance Analysis of a Coherent Ising Machine with Hardware Constraints Hirotake Ito, Yukio Murata (TUS), Hiroki Takesue (NTT), Kazuyuki Aihara (TU), Mikio Hasegawa (TUS) NLP2018-39 CCS2018-12 |
A fast solution method of combinational optimization problem using a Coherent Ising Machine has been developed. A method... [more] |
NLP2018-39 CCS2018-12 pp.63-68 |
CCS, NLP |
2016-06-14 11:05 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
[Invited Talk]
Optical oscillator network for solving combinatorial optimization problems
-- Coherent Ising machine -- Shoko Utsunomiya, Shuhei Tamate (NII), Yoshitaka Haribara, Hiromasa Sakaguchi (Tokyo Univ), Hiroki Takesue, Takahiro Inagaki, Kensuke Inaba (NTT), Kyo Inoue (Osaka univ), Yoshihisa Yamamoto (JST) NLP2016-28 CCS2016-11 |
[more] |
NLP2016-28 CCS2016-11 pp.45-49 |
QIT (2nd) |
2014-05-12 - 2014-05-13 |
Aichi |
Nagoya Univ. |
[Poster Presentation]
On-chip generation and spatial separation of quantum correlated photon pairs using Si-silica monolithic waveguide platform Peter Karkus, Nobuyuki Matsuda, Hidetaka Nishi, Tai Tsuchizawa, William J. Munro, Hiroki Takesue, Koji Yamada (NTT) |
We present a monolithic device consisting of a Si-wire waveguide and a silica-based arrayed waveguide grating, capable o... [more] |
|
SCE |
2013-10-03 09:55 |
Miyagi |
Tohoku University, RIEC |
Fabrication of superconducting single-photon detector with ultralow dark count rate and quantum key distribution over 300 km Hiroyuki Shibata, Kaoru Shimizu, Toshimori Honjo, Hiroki Takesue, Yasuhiro Tokura (NTT) SCE2013-30 |
We report the fabrication of a superconducting nanowire single-photon detector (SSPD) with an ultralow dark count rate (... [more] |
SCE2013-30 pp.61-66 |
QIT (2nd) |
2013-05-27 - 2013-05-28 |
Hokkaido |
Hokkaido Univ. |
[Poster Presentation]
Single photon buffer based on coupled resonator optidal waveguide Hiroki Takesue, Nobuyuki Matsuda, Eiichi Kuramochi, Masaya Notomi (NTT) |
Integrated quantum optical circuit is now drawing attention as a way to realize large-scale photonic quantum information... [more] |
|
QIT (2nd) |
2011-11-21 14:40 |
Osaka |
Osaka Univ. Engr. Sci. Sigma Hall (Toyonaka) |
[Poster Presentation]
Observation of an ultra-narrowband parametric gain in photonic crystal coupled high-Q cavities Nobuyuki Matsuda, Hiroki Takesue, Eiichi Kuramochi, Masaya Notomi (NTT) |
[more] |
|
QIT (2nd) |
2011-11-21 14:40 |
Osaka |
Osaka Univ. Engr. Sci. Sigma Hall (Toyonaka) |
[Poster Presentation]
Polarization-entangled photon-pair generation using a polarization-rotator-integrated silicon photonic circuit Hanna Le Jeannic, Nobuyuki Matsuda, Hiroki Takesue, Hiroshi Fukuda, Tai Tsuchizawa, Toshifumi Watanabe, Koji Yamada, Seiichi Itabashi, Yasuhiro Tokura (NTT) |
[more] |
|
SCE |
2010-01-20 11:30 |
Tokyo |
Kikai-Shinkou-Kaikan Bldg. |
Comparison of timing jitter between NbN superconducting single-photon detector and avalanche photodiode Tadakiyo Seki, Hiroyuki Shibata (NTT Corp./Osaka Univ.), Hiroki Takesue, Yasuhiro Tokura (NTT), Nobuyuki Imoto (Osaka Univ.) SCE2009-26 |
We report the pulse-to-pulse timing jitter measurement of a niobium nitride (NbN) superconducting single-photon detector... [more] |
SCE2009-26 pp.11-15 |