| Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
QIT
(2nd) |
2024-11-27
14:50 |
Kagawa |
Sunport Hall Takamatsu (Kagawa) |
Connection of surface code patches without postselection in entanglement distillation
Moeto Mishima, Toshihiko Sasaki, Masato Koashi (UTokyo) |
Entanglement distillation, which is a process of extracting purer entangled states from noisy ones, plays a significant ... [more] |
|
QIT
(2nd) |
2024-11-26
13:20 |
Kagawa |
Sunport Hall Takamatsu (Kagawa) |
[Poster Presentation]
Quantum concentration inequalities for adversarial setups exploiting permutation symme
Takaya Matsuura (RIKEN), Shinichiro Yamano (UTokyo), Yui Kuramochi (UEC), Toshihiko Ssasaki, Masato Koashi (UTokyo) |
We construct new concentration inequalities for quantum states on $N$-body quantum systems or measurement outcomes on th... [more] |
|
QIT
(2nd) |
2023-12-17
17:30 |
Okinawa |
OIST (Okinawa, Online)
(Primary: On-site, Secondary: Online) |
[Poster Presentation]
Proposing a method for evaluating cavity-based single-photon generation
Seigo Kikura (UTokyo), Rui Asaoka, Yuuki Tokunaga (NTT), Masato Koashi (UTokyo) |
Single-photon sources not only allow us to prove the quantum nature of light but also have applications ranging from qua... [more] |
|
QIT
(2nd) |
2023-05-30
15:50 |
Kyoto |
Katsura Campus, Kyoto University (Kyoto) |
General treatment of trusted receiver noise in continuous variable quantum key distribution
Shinichiro Yamano (UT), Takaya Matsuura (RMIT University), Yui Kuramochi (Kyushu Univ.), Toshihiko Sasaki, Masato Koashi (UT) |
Continuous Variable (CV) quantum key distribution (QKD) is a promising candidate for practical implementations due to it... [more] |
|
QIT
(2nd) |
2023-05-30
17:05 |
Kyoto |
Katsura Campus, Kyoto University (Kyoto) |
A single-photon source based on cavity quantum electrodynamics considering the re-excitation problem
Seigo Kikura (UTokyo), Rui Asaoka (NTT), Masato Koashi (UTokyo), Yuuki Tokunaga (NTT) |
[more] |
|
QIT
(2nd) |
2023-05-29
16:30 |
Kyoto |
Katsura Campus, Kyoto University (Kyoto) |
[Poster Presentation]
Reduction of execution time of quantum singular value transformation by recombination of quantum circuits
Rei Tokami (UTokyo), Yasunari Suzuki (NTT), Masato Koashi (UTokyo) |
[more] |
|
QIT
(2nd) |
2022-12-09
10:15 |
Kanagawa |
Keio Univ. (Kanagawa, Online)
(Primary: On-site, Secondary: Online) |
Finite-size security proof of binary-modulation continuous-variable quantum key distribution using only heterodyne measurement
Shinichiro Yamano (Univ. of Tokyo), Takaya Matsuura (RMIT Univ.), Yui Kuramochi (Kyushu Univ.), Toshihiko Sasaki, Masato Koashi (Univ. of Tokyo) |
Continuous-variable quantum key distribution (CV QKD) has many practical advantages including compatibility with current... [more] |
|
QIT
(2nd) |
2022-12-09
10:30 |
Kanagawa |
Keio Univ. (Kanagawa, Online)
(Primary: On-site, Secondary: Online) |
Refined security proof of the binary-modulation continuous-variable quantum key distribution
Takaya Matsuura (RMIT Univ.), Shinichiro Yamano (Univ. of Tokyo), Yui Kuramochi (Kyushu Univ.), Toshihiko Sasaki, Masato Koashi (Univ. of Tokyo) |
Continuous-variable (CV) quantum key distribution (QKD) has its distinct advantages in lower-cost
implementation and mu... [more] |
|
QIT
(2nd) |
2022-12-09
12:45 |
Kanagawa |
Keio Univ. (Kanagawa, Online)
(Primary: On-site, Secondary: Online) |
Constructing quantum decoders based on complementarity principle
Yoshifumi Nakata (KU), Takaya Matsuura (RMIT), Masato Koashi (UT) |
Decoding quantum information from noisy quantum systems is crucial in quantum information science and in fundamental phy... [more] |
|
QIT
(2nd) |
2020-12-10
10:10 |
Online |
Online (Online) |
Security of continuous variable quantum key distribution with digital signal processing
Takaya Matsuura, Kento Maeda, Toshihiko Sasaki, Masato Koashi (U-Tokyo) |
Continuous-variable (CV) quantum key distribution (QKD) uses homodyne/heterodyne measurement, which is technologically m... [more] |
|
QIT
(2nd) |
2019-11-19
11:30 |
Tokyo |
Gakushuin University (Tokyo) |
Fast quantum algorithm for data approximation by optimized random features
Hayata Yamasaki (UTokyo), Sathyawageeswar Subramanian (University of Cambridge), Sho Sonoda (Riken), Masato Koashi (UTokyo) |
[more] |
|
QIT
(2nd) |
2019-05-20
17:30 |
Fukuoka |
Kyushu University, Chikushi Campus (Fukuoka) |
Quantum key distribution with simply characterized light sources
Akihiro Mizutani (Mitsubishi Electric Corporation), Toshihiko Sasaki (The Univ. of Tokyo), Yuki Takeuchi (NTT), Kiyoshi Tamaki (Univ. of Toyama), Masato Koashi (The Univ. of Tokyo) |
[more] |
|
QIT
(2nd) |
2019-05-21
14:30 |
Fukuoka |
Kyushu University, Chikushi Campus (Fukuoka) |
Frequency-domain Mach-Zehnder interferometer
Toshiki Kobayashi, Daisuke Yamazaki, Kenichiro Matsuki, Rikizo Ikuta (Osaka Univ.), Shigehito Miki (NICT), Taro Yamashita (Nagoya Univ.), Hirotaka Terai (NICT), Takashi Yamamoto (Osaka Univ.), Masato Koashi (Univ. of Tokyo), Nobuyuki Imoto (Osaka Univ.) |
We demonstrate a first-order interference between coherent light at 1580~nm and 795~nm by using a frequency-domain Mach-... [more] |
|
QIT
(2nd) |
2018-06-04
17:50 |
Hiroshima |
ICCH Ran (Hiroshima) |
Performance improvement of RRDPS protocol by refined security analysis
Takaya Matsuura, Toshihiko Sasaki, Masato Koashi (UT) |
In recent years, quantum key distribution (QKD) protocols which use weak coherent pulses have been attracting much atten... [more] |
|
QIT
(2nd) |
2018-06-05
09:40 |
Hiroshima |
ICCH Ran (Hiroshima) |
Polarization insensitive frequency conversion for an atom-photon entanglement distribution via a telecom network
Rikizo Ikuta, Toshiki Kobayashi, Tetsuo Kawakami (Osaka Univ.), Shigehito Miki, Masahiro Yabuno, Taro Yamashita, Hirotaka Terai (NICT), Masato Koashi (Univ. of Tokyo), Tetsuya Mukai (NTT), Takashi Yamamoto, Nobuyuki Imoto (Osaka Univ.) |
[more] |
|
QIT
(2nd) |
2018-06-05
16:20 |
Hiroshima |
ICCH Ran (Hiroshima) |
One-shot partial decoupling and its applications to complex quantum many-body systems
Yoshifumi Nakata (UT), Eyuri Wakakuwa (UEC), Masato Koashi (UT) |
[more] |
|
QIT
(2nd) |
2017-05-29
10:00 |
Kyoto |
Ritesumeikan University, Suzaku Campus (Kyoto) |
Efficient unitary designs with nearly time-independent Hamiltonian dynamics
Yoshifumi Nakata (UT), Christoph Hirche (UAB), Masato Koashi (UT), Andreas Winter (UAB) |
[more] |
|
QIT
(2nd) |
2017-05-29
15:00 |
Kyoto |
Ritesumeikan University, Suzaku Campus (Kyoto) |
[Poster Presentation]
Photonic multipartite entanglement conversion using nonlocal operations
Toshiyuki Tashima (Kyoto Univ.), Mark Tame (UKZN), Sahin Kaya Ozdemir (Washington Univ.), Franco Nori (RIKEN), Masato Koashi (Tokyo. Univ.), Harald Weinfurter (LMU) |
We propose a simple setup for the conversion of multipartite entangled
states in a quantum network with restricted acce... [more] |
|
QIT
(2nd) |
2016-05-30
10:10 |
Kochi |
Kochi University of Technology Eikokuji campus (Kochi) |
Quantum key distribution protocol with slow basis choice
Toshihiko Sasaki (U Tokyo), Kiyoshi Tamaki (NTT), Masato koashi (U Tokyo) |
In order to improve the key generation rate of the quantum key distribution (QKD) protocols, we try to
make the signal ... [more] |
|
QIT
(2nd) |
2016-05-31
09:50 |
Kochi |
Kochi University of Technology Eikokuji campus (Kochi) |
Wavelength conversion of non-classical light emitted from rubidium atoms to the telecom band
Toshiki Kobayashi, Rikizo Ikuta, Kenichiro Matsuki (Osaka Univ.), Shigehito Miki, Taro Yamashita, Hirotaka Terai (NICT), Takashi Yamamoto (Osaka Univ.), Masato Koashi (Univ. of Tokyo), Tetsuya Mukai (NTT BRL), Nobuyuki Imoto (Osaka Univ.) |
[more] |
|