Optimum detection for extracting maximum information from symmetric qubit sets

Jun Mizuno, Mikio Fujiwara, Makoto Akiba, Tetsuya Kawanishi, Stephen M. Barnett, Masahide Sasaki

研究成果: Article査読

25 被引用数 (Scopus)

抄録

A class of optimum detection strategies was demonstrated for extracting the maximum information from sets of equiprobable real symmetric qubit states of a single photon. The detections with at least three outputs were found to suffice for optimum extraction of information regardless of the number of signal elements. Optimum measurement consisted of three symmetric state vectors with length less than unity in ternary or trine signals. It was found that the difference between the measured value for the mutual information and the theoretical limit was due to the leakage of the wrong polarization through polarizing beamsplitters and imperfect contrast.

本文言語English
論文番号012315
ページ(範囲)123151-1231510
ページ数1108360
ジャーナルPhysical Review A. Atomic, Molecular, and Optical Physics
65
1
DOI
出版ステータスPublished - 2002 1
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学

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