| Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
QIT
(2nd) |
2022-05-30
13:30 |
Online |
Online |
[Poster Presentation]
Demonstration of ultra-broadband frequency entangled photon-pairs generated in an on-chip ring resonator
Yushi Hamayama, Kenta Sugiura, Dan Nakamura, Ryo Okamoto (Kyoto Univ.), Brent E. Little (CAS), Sai Tak CHU (CityU), Shigeki Takeuchi (Kyoto Univ.) |
Frequency entangled photon-pairs are widely used in quantum technologies such as quantum metrology
and quantum informat... [more] |
|
QIT
(2nd) |
2021-11-30
13:30 |
Online |
Online |
[Poster Presentation]
Quantum Metrology in the Presence of Noise by Indefinite Causal Order
Taiki Fujimoto, Kazuya Yuasa (Waseda Univ.) |
We discuss quantum metrology in the presence of noise. In quantum mechanics, one can think of the superposition of diffe... [more] |
|
QIT
(2nd) |
2021-05-25
14:20 |
Online |
Online |
Efficient computation of the Nagaoka-Hayashi bound for multi-parameter estimation with separable measurements
Lorcan O. Conlon (ANU), Jun Suzuki (UEC), Ping Koy Lam, Syed M. Assad (ANU) |
Finding the optimal attainable precisions in quantum multi-parameter metrology is a non-trivial problem. One approach to... [more] |
|
QIT
(2nd) |
2020-12-10
13:00 |
Online |
Online |
[Poster Presentation]
Quantum Metrology in the Presence of a Background Noise Parameter
Ryosuke Mochida, Kazuya Yuasa (Waseda Univ.) |
We discuss the quantum metrology in the presence of noise. While it is usually discussed under the assumption that the n... [more] |
|
QIT
(2nd) |
2019-11-19
09:40 |
Tokyo |
Gakushuin University |
Theoretical limits and scaling of quantum edge detection
Naoto Kura, Masahito Ueda (UTokyo) |
Edge detection, one of the fundamental tools in signal processing, is mathematically related to the wavelet transform of... [more] |
|
QIT
(2nd) |
2018-11-26
13:30 |
Tokyo |
The University of Tokyo |
[Poster Presentation]
Quantum Metrology in the Presence of Unknown Background Parameters
Masaya Shintoku, Teruo Matsubara, Kazuya Yuasa (Waseda Univ.) |
We discuss quantum metrology in the presence of some background. We treat the parameters characterizing the background a... [more] |
|
QIT
(2nd) |
2016-11-24
13:00 |
Ibaraki |
KEK Kobayashi-hall |
[Poster Presentation]
Optimal Gaussian Metrology for Generic Multi-Mode Linear Circuit
Teruo Matsubara, Kazuya Yuasa (Waseda Univ.) |
We search for the best input state among generic (mixed in general) Gaussian states with a fixed average number of probe... [more] |
|
QIT
(2nd) |
2016-11-24
13:00 |
Ibaraki |
KEK Kobayashi-hall |
[Poster Presentation]
Study on the coherence of multiphoton-multimode entanglement 2
Naoki Yamashiro, Takayuki Kiyohara, Ryo Okamoto (Kyoto Univ.), Jun-Yi WU, Holger F. Hofmann (Hiroshima Univ.), Shigeki Takeuchi (Kyoto Univ.) |
Quantum interference between photons plays a crucial role for linear optics quantum circuits for quantum metrology, quan... [more] |
|
QIT
(2nd) |
2016-05-30
13:00 |
Kochi |
Kochi University of Technology Eikokuji campus |
[Poster Presentation]
Study on the coherence of multiphoton-multimode entanglement
Naoki Yamashiro, Takayuki Kiyohara, Ryo Okamoto (Kyoto Univ.), Holger F. Hofmann (Hiroshima Univ.), Shigeki Takeuchi (Kyoto Univ.) |
Quantum interference between photons plays a crucial role for linear optics quantum circuit, such as quantum metrology, ... [more] |
|
QIT
(2nd) |
2016-05-30
13:00 |
Kochi |
Kochi University of Technology Eikokuji campus |
[Poster Presentation]
Estimation of Parameters in a Qubit Channel with the Help of Entanglement with an Ancilla Qubit
Yasunari Tanaka, Kazuya Yuasa (Waseda Univ.) |
We discuss the estimation of a parameter contained in a quantum channel.
In the standard strategy, we send the system ... [more] |
|
QIT
(2nd) |
2015-11-24
10:00 |
Kanagawa |
NTT Atsugi R&D center |
Improving the coherence time of a quantum system via a coupling to a short-lived system
Y. Matsuzaki, X. Zhu, K. Kakuyanagi, H. Toida (NTT), T. Shimoka, N. Mizuochi (Osaka Univ.), K. Nemoto (NII), K. Semba (NICT), W. J. Munro, H. Yamaguchi, S. Saito (NTT) |
Here, we propose a counterintuitive use of a hybrid system where the coherence time of a quantum system can be significa... [more] |
|
QIT
(2nd) |
2013-05-27
12:00 |
Hokkaido |
Hokkaido Univ. |
Rigorous Treatment of the Weak Measurement from the Perspective of Uncertainty and Amplification
Jaeha Lee (Univ. of Tokyo), Izumi Tsutsui (KEK) |
The extended physical quantity in quantum mechanics called Weak Value (WV) has gained a renewed interest in recent years... [more] |
|
QIT
(2nd) |
2012-11-28
15:20 |
Kanagawa |
Keio Univ. Hiyoshi Campus |
Magnetic field sensing beyond the standard quantum limit under the effect of decoherence
Yuichiro Matsuzaki (NTT), Simon Benjamin, Joe Fitzsimons (Oxford Univ.) |
Entangled states can potentially be used to outperform the standard
quantum limit which every classical sensor is boun... [more] |
|