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ID 17831
Eprint ID
17831
フルテキストURL
著者
東辻 浩夫 Graduate School of Natural Science and Technology, Okayama University
Chai Hong Graduate School of Natural Science and Technology, Okayama University
東辻 千枝子 Graduate School of Natural Science and Technology, Okayama University
鶴田 健二 Graduate School of Natural Science and Technology, Okayama University
抄録
For the transfer of quantum information and the creation of entangled states, the application of tuned spin chains, systems of spins with the nearest-neighbor coupling tuned so as to give high efficiency, has been proposed and some examples of high performance have been given by several authors. In this article, the effect of deviations from tuned values and the effect of resultant asymmetry are investigated through numerical simulations and theoretical analyses. It is shown that there exists a system where the transfer efficiency is comparable with exactly tuned ones and, at the same time, robust to noises in the coupling constants. It is also shown that the effect of asymmetry on the efficiency of entanglement creation is of the second order when the asymmetry is small.
発行日
2009-01
出版物タイトル
Memoirs of the Faculty of Engineering, Okayama University
出版物タイトル(別表記)
岡山大学工学部紀要
43巻
出版者
Faculty of Engineering, Okayama University
出版者(別表記)
岡山大学工学部
開始ページ
22
終了ページ
26
ISSN
1349-6115
NCID
AA12014085
資料タイプ
紀要論文
言語
English
OAI-PMH Set
岡山大学
論文のバージョン
publisher
査読
無し
Sort Key
4
Eprints Journal Name
mfe