Tsuyoshi Sasaki Usuda

J-GLOBAL         Last updated: Jul 13, 2015 at 14:24
 
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Name
Tsuyoshi Sasaki Usuda
Affiliation
Aichi Prefectural University
Section
Faculty of Information Science and Technology

Research Areas

 
 

Misc

 
NAKAHIRA Kenji, USUDA SASAKI Tsuyoshi, KATO Kentaro
電子情報通信学会論文誌. A, 基礎・境界 = The transactions of the Institute of Electronics, Information and Communication Engineers. A   96(1) 56-66   Jan 2013
Iwata Naoki, Sasaki Usuda Tsuyoshi
Proceedings of the Society Conference of IEICE   2014    Sep 2014
OTA Masaki, SHIROMOTO Keisuke, SASAKI USUDA Tsuyoshi
The transactions of the Institute of Electronics, Information and Communication Engineers. B   95(2) 110-118   Feb 2012
量子情報理論において,測定過程としてSquare-root measurement (SRM)を用いることにより,様々な成果が示されている.特に,SRMは信号系が群共変性をもつとき,誤り率を最小にする最適測定となることが知られている.そこで本論文では,SRMを用いた整数環上の線形符号に対する量子信号系の通信路行列の解析解を示す.レター状態としてはm相PSKコヒーレント状態を用いる.まず,整数環上の線形符号が群共変的であることを確認し,[T.S. Usuda, S. Usami, I. Ta...
IMAEDA Asami, YOSHIKAWA Masahiro, SASAKI USUDA Tsuyoshi
IEEJ Transactions on Electronics, Information and Systems   129(12) 2159-2160   Dec 2009
The quasi-optimum quantum receiver proposed by Yamazaki can not necessarily overcome the standard quantum limit that is achieved by the heterodyne receiver for any average number of photons. We improve the quasi-optimum quantum receiver and show t...
SAWADA Tomohiro, SASAKI USUDA Tsuyoshi
IEEJ Transactions on Electronics, Information and Systems   129(12) 2174-2179   Dec 2009
To derive an optimal quantum detection that minimizes the average probability of detection error is an important problem in quantum information theory. Especially, a study of mixed-state signals is important not only for reliable communications bu...