最大と非最大擬似ベル状態を用いた片側減衰がある量子リーディングの性能比較

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2020/12/01

タイトル(英語): Comparison of Performances on Quantum Reading in Non-symmetric Loss Using Maximum and Non-maximum Quasi-Bell States

著者名: 石川　恵大（愛知県立大学大学院 情報科学研究科），王　天澄（愛知県立大学大学院 情報科学研究科），臼田　毅（愛知県立大学大学院 情報科学研究科）

著者名(英語): Keita Ishikawa (Graduate School of Information Science and Technology, Aichi Prefectural University), Tiancheng Wang (Graduate School of Information Science and Technology, Aichi Prefectural University), Tsuyoshi Sasaki Usuda (Graduate School of Information Science and Technology, Aichi Prefectural University)

キーワード: エンタングルメント，擬似ベル状態，量子リーディング　　entanglement，Quasi-Bell state，quantum reading

要約(英語): Quantum reading is the protocol that uses entanglement for reading a bit stored in digital memory. By using entanglement, it was shown by S. Pirandola that the data rate was improved. O. Hirota showed that in noiseless environments, error-free reading is possible by using a quasi-Bell state that has maximum entanglement. After that, some non-ideal cases were considered, such as symmetric loss and incomplete phase shift. In this study, we would like to clarify properties of the protocol in more realistic situations for experiment. In this paper, we compare and consider the effects using maximum and non-maximum quasi-Bell states on quantum reading with (1) only non-symmetric loss, (2) non-symmetric loss and incomplete phase shift, and (3) non-symmetric loss and phase noise. In the case (1), we derive the exact solutions of the error probabilities when using maximum and non-maximum quasi-Bell states. Then we clarify that the error probability using maximum quasi-Bell states is always lower than that using non-maximum quasi-Bell states. In the other two cases, we compute error probabilities numerically. In cases (2) and (3), the results are different from that of the case (1). That is, both maximum and non-maximum quasi-Bell states are not always supremer than the other.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.140 No.12 （2020） 特集：電気・電子・情報関係学会東海支部連合大会

本誌掲載ページ: 1328-1335 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/140/12/140_1328/_article/-char/ja/