| Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
QIT
(2nd) |
2022-05-30
13:30 |
Online |
Online |
[Poster Presentation]
Role of Feedback Control for Charging/Discharging Quantum Battery
Kenta Koshihara, Kazuya Yuasa (Waseda Univ.) |
We discuss charging/discharging of energy of a quantum battery via general quantum processes. We point out that a genera... [more] |
|
QIT
(2nd) |
2021-11-30
13:30 |
Online |
Online |
[Poster Presentation]
Quantum Reservoir Computing with a Multimode Interferometric Optical Circuit
-- Estimation of Characteristic Quantities of Quantum States of Light --
Natsuki Yokoyama, Masaya Shintoku, Kazuya Yuasa (Waseda Univ.) |
We discuss quantum reservoir computing with a multimode interferometric optical circuit. Multiparticle quantum interfere... [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) |
2021-11-30
13:30 |
Online |
Online |
[Poster Presentation]
Roles of Quantum Measurements and Feedback Controls in Quantum Maxwell's Demon
Kenta Koshihara, Kazuya Yuasa (Waseda Univ.) |
We revisit quantum Maxwell’s demon. We point out that general quantum measurement processes are implicitly endowed with ... [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) |
2019-05-20
13:20 |
Fukuoka |
Kyushu University, Chikushi Campus |
[Poster Presentation]
Quantum Superposition of Orders of Multiple Quantum Channels: Application to Quantum State Preservation
Yutaka Maeda, Masaya Shintoku, Kazuya Yuasa (Waseda Univ.) |
In quantum mechanics, one can think of the superposition of different orders of quantum operations. We show that, given ... [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) |
2018-11-26
13:30 |
Tokyo |
The University of Tokyo |
[Poster Presentation]
Maxwell's Demon Controlling Erectric Current: Quantum Master Equation Approach
Kenta Koshihara, Teruo Matsubara, Kazuya Yuasa (Waseda Univ.) |
We investigate a model of Maxwell's demon, in which the demon tries to realize a demonic backward flow of electric curre... [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]
Enhanced Estimation by Ring Interferometry
Takahiro Suzuki, Kazuya Yuasa (Waseda Univ.) |
[more] |
|
QIT
(2nd) |
2016-05-30
13:00 |
Kochi |
Kochi University of Technology Eikokuji campus |
[Poster Presentation]
Quantum State Tomography Enhanced by Quantum Multiple Scattering
Takahiro Suzuki, Kazuya Yuasa (Waseda Univ.) |
We show that the precision of quantum state tomography can be enhanced by quantum interference effects. We try to recons... [more] |
|
QIT
(2nd) |
2016-05-30
13:00 |
Kochi |
Kochi University of Technology Eikokuji campus |
[Poster Presentation]
Estimation of Parameters in a Qubit Channel via Sequential Measurements
Teruo Matsubara, Kazuya Yuasa (Waseda Univ.) |
We discuss the estimation of parameters contained in a quantum channel.
In the standard strategy, we send the quantum ... [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) |
2013-11-18
- 2013-11-19 |
Tokyo |
Waseda Univ. |
[Poster Presentation]
Generation of Entanglement between Two Qubits with a Ring Interferometer
Kouichi Inaba, Kazuya Yuasa (Waseda Univ.) |
We present a scheme for generating entanglement between two qubits, which do not directly interact with each other, by m... [more] |
|
QIT
(2nd) |
2012-11-27
- 2012-11-28 |
Kanagawa |
Keio Univ. Hiyoshi Campus |
[Poster Presentation]
Generation of Entanglement by Repetition of Measurements Followed by Feedbacks under the Influence of Environment
Shouichirou Terasawa, Kazuya Yuasa (Waseda Univ.) |
We discuss a scheme for generating entanglement between two qubits under the influence of environment. By repeating meas... [more] |
|
QIT
(2nd) |
2012-05-21
13:20 |
Fukui |
Fukui Univ. |
[Poster Presentation]
Generation of entanglement between two qubits with Mach-Zehnder interferometer
Kouichi Inaba, Kazuya Yuasa (Waseda Univ.) |
We present a scheme for generating entanglement between two qubits, which do not directly interact with each other, by m... [more] |
|
QIT
(2nd) |
2012-05-21
13:20 |
Fukui |
Fukui Univ. |
[Poster Presentation]
Quantum metrology with identical particles and their indistinguishability
Koji Matsuoka, Kazuya Yuasa (Waseda Univ.) |
[more] |
|
QIT
(2nd) |
2011-11-22
15:00 |
Osaka |
Osaka Univ. Engr. Sci. Sigma Hall (Toyonaka) |
Generation of Quantum States by Ergodic Maps
Kazuya Yuasa (Waseda Univ.), Vittorio Giovannetti (SNS (Pisa)), Daniel Burgarth (Aberystwyth Univ. (UK)), Hiromichi Nakazato, Junya Okude, Shouichirou Terasawa (Waseda Univ.) |
In order to generate a desired quantum state, we should be able to lead the quantum system from an arbitrary initial sta... [more] |
|
QIT
(2nd) |
2011-11-21
14:40 |
Osaka |
Osaka Univ. Engr. Sci. Sigma Hall (Toyonaka) |
[Poster Presentation]
Estimation of the coupling constants of a three-qubit chain via a single sequence of measurements on the edge qubit
Satoshi Ando, Kazuya Yuasa (Waseda Univ.) |
Parameters of a quantum system, which would not be observables and would not be directly measurable, are usually estimat... [more] |
|