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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| MRIS, ITE-MMS | 2024-12-06 11:20 |
Ehime | Ehime Univ. (CITE) (Ehime, Online) (Primary: On-site, Secondary: Online) |
Evaluation of robustness against noise in super-resolution complex amplitude measurements using free-space optical propagation and virtual phase conjugation Ippo Matsushita, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.) |
Optical measurement, a crucial technique employed in diverse fields such as three-dimensional biological tissue imaging... [more] |
|
| QIT (2nd) |
2024-11-28 09:50 |
Kagawa | Sunport Hall Takamatsu (Kagawa) | Optical quantum computing method using a hybrid squeezed cat code Shohei Kiryu, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.) |
In recent years, squeezed cat codes with resilience to specific types of loss have been proposed as a step toward realiz... [more] | |
| QIT (2nd) |
2024-11-26 13:20 |
Kagawa | Sunport Hall Takamatsu (Kagawa) | [Poster Presentation]
Numerical simulation of quantum dynamic programming and noise evaluation on NISQ devices Souta Kojima, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.) |
Dynamic programming is a classical algorithm that operates quickly when an optimization problem has a similar structure ... [more] | |
| QIT (2nd) |
2024-11-26 13:20 |
Kagawa | Sunport Hall Takamatsu (Kagawa) | [Poster Presentation]
Bright Illumination Attack on BB84 with Passive and Asymmetric Basis Selection Toshitsugu Kato, Akihisa Tomita (Hokkaido Univ.) |
The bright illumination attack exploits the imperfections of photon detectors (Avalanche Photodiodes, APDs) used in Quan... [more] | |
| QIT (2nd) |
2024-05-29 17:00 |
Ibaraki | AIST Tsukuba (Ibaraki) | Disturbance Evaluation Circuit for Quantum Measurements and Its Experimental Demonstration on a Quantum Computer Haruki Emori (Hokkaido Univ.), Masanao Ozawa (Chubu Univ.), Akihisa Tomita (Hokkaido Univ.) |
The performance evaluation of quantum measurements is essential for the advancement of quantum information processing. I... [more] | |
| QIT (2nd) |
2024-05-28 13:00 |
Ibaraki | AIST Tsukuba (Ibaraki) | [Poster Presentation]
Evaluation of Photon Loss Tolerance in Hybrid Squeezed Cat Code Shohei Kiryu, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.) |
Towards the realization of fault-tolerant optical quantum computers, bosonic code, such as cat codes and GKP codes, have... [more] | |
| QIT (2nd) |
2023-12-17 16:45 |
Okinawa | OIST (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Hybrid Quantum Information Processing with Squeezed Cat Codes Shohei Kiryu, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ) |
We propose a hybrid quantum computation of squeezed cat codes and qubits. Since hybrid quantum teleportation is essentia... [more] | |
| QIT (2nd) |
2023-12-19 09:30 |
Okinawa | OIST (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Evaluation of Photon Number Distribution for Security Ensuring of Quantum Key Distribution Ryoji Matsumoto, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.) |
In QKD using WCP sources, PNS attack exploiting multiphoton pulses affects security of the system. Decoy method can be u... [more] | |
| QIT (2nd) |
2023-12-17 17:30 |
Okinawa | OIST (Okinawa, Online) (Primary: On-site, Secondary: Online) |
An Effective Countermeasure against Time-Shift Attack and Comprehensive Analyses of Decoy-State QKD under Finite-Size Effects Toshitsugu Kato, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.) |
One factor hindering the practical implementation of quantum cryptography is the vulnerability to eavesdropping attacks ... [more] | |
| QIT (2nd) |
2023-12-17 17:30 |
Okinawa | OIST (Okinawa, Online) (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Verification of identifiability of quantum states in quantum key delivery Shunya Tajima, Atsushi Okamoto, Akihisa Tomita (hokudai) |
In quantum key distribution, it is required that when creating the transmission state, the state is identical in all deg... [more] | |
| QIT (2nd) |
2023-12-17 17:30 |
Okinawa | OIST (Okinawa, Online) (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Quantum Reservoir Computing Utilizing Quantum Chaotic Systems with Heisenberg XXZ Spin Chains Shu Komatsugawa, Akihisa Tomita, Atsushi Okamoto (Hokkaido Univ.) |
Reservoir Computing (RC) is a machine learning method that aims to achieve both high learning performance and low learni... [more] | |
| QIT (2nd) |
2023-12-17 17:30 |
Okinawa | OIST (Okinawa, Online) (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Characteristic Function and Susceptibility as Quasiprobability Haruki Emori, Akihisa Tomita (Hokkaido Univ.) |
Quasiprobability is widely used as a tool to capture the essence and completely characterize the distribution of quantum... [more] | |
| OCS, OFT, IEE-CMN, ITE-BCT (Joint) [detail] |
2023-11-09 16:45 |
Kyoto | (Kyoto, Online) (Primary: On-site, Secondary: Online) |
Phase Compensation Method in Mode Selective Switch Using Volume Holographic De-multiplexer Yui Yoshikata, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.)  OCS2023-44 |
In mode-division multiplex (MDM) communication using few-mode fiber, it is expected to realize ROADM by introducing mode... [more] | OCS2023-44 pp.6-11 |
| OCS, CS (Joint) |
2023-01-13 09:25 |
Fukuoka | CANAL CITY HAKATA (Fukuoka, Online) (Primary: On-site, Secondary: Online) |
Phase compensation method in core-selective switch for few-mode multi-core fiber using spatial light modulator Ryo Watanabe, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.) OCS2022-63 |
In order to realize Dence SDM transmission using Few-Mode Multi-Core Fiber(FM-MCF), a switching device adapted to spatia... [more] | OCS2022-63 pp.18-21 |
| QIT (2nd) |
2022-12-08 14:00 |
Kanagawa | Keio Univ. (Kanagawa, Online) (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Quantum State Generation using DPQPSK Modulator for High Speed Quantum Key Distribution Yuki Sugawara, Akihisa Tomita, Atsushi Okamoto (Hokkaido Univ.) |
In implementing a high-speed QKD system, distortions in the modulation signal degrade the performance of the QKD system.... [more] | |
| QIT (2nd) |
2022-12-08 14:00 |
Kanagawa | Keio Univ. (Kanagawa, Online) (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Disturbance Evaluation Circuit in Quantum Measurement Haruki Emori (Hokkaido Univ./NICT), Masanao Ozawa (Chubu Univ./Nagoya Univ.), Akihisa Tomita (Hokkaido Univ.) |
Two evaluation methods, the three-state method and the weak measurement method, were proposed for disturbances in quantu... [more] | |
| ET | 2022-09-17 14:55 |
Hiroshima | Hiroshima University and Online (Hiroshima, Online) (Primary: On-site, Secondary: Online) |
Proposal of Generating Propositional Logic Formulas Methods for Learning Support Systems of Intellectual Property Law Akihisa Tomita, Toru Kano, Takako Akakura (TUS) ET2022-18 |
The development and spread of information technology, called the 4th Industrial Revolution, has increased the value of i... [more] | ET2022-18 pp.48-51 |
| QIT (2nd) |
2022-05-31 11:30 |
Online | Online (Online) | Mitigation-based benchmarking for NISQ devices Haruki Emori, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.) |
This study applies quantum error mitigation (QEM) according to the type of quantum error and estimates the average gate ... [more] | |
| IE, ITS, ITE-AIT, ITE-ME, ITE-MMS [detail] | 2022-02-21 14:40 |
Online | Online (Online) | Effect of post-exposure time on diffraction efficiency of volume holograms during recording Yuya Kuroda, Atsushi Okamoto (Hokkaido Univ.), Satoshi Shinada, Yuta Goto (NICT), Akihisa Tomita (Hokkaido Univ.) |
To realize the mode division multiplexing transmission, we have proposed a volume holographic mode de-multiplexer (VHDM)... [more] | |
| IE, ITS, ITE-AIT, ITE-ME, ITE-MMS [detail] | 2022-02-21 15:05 |
Online | Online (Online) | Mode diffusion technique for reduction of crosstalk in volume holographic mode demultiplexer Shuanglu Zhang, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.) |
Volume holographic demultiplexers (VHDMs) utilize angularly multiplexed volume holograms to separate multiplexed spatial... [more] | |
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