Sub-shot-noise-limit discrimination of on-off keyed coherent signals via a quantum receiver with a superconducting transition edge sensor

Kenji Tsujino, Daiji Fukuda, Go Fujii, Shuichiro Inoue, Mikio Fujiwara, Masahiro Takeoka, Masahide Sasaki

研究成果: Article査読

40 被引用数 (Scopus)

抄録

We demonstrate a sub-shot-noise-limit discrimination of on-off keyed coherent signals by an optimal displacement quantum receiver in which a superconducting transition edge sensor is installed. Use of a transition edge sensor and a fiber beam splitter realizes high total detection efficiency and high interference visibility of the receiver and the observed average error surpasses the shot-noise-limit in a wider range of the signal power. Our technique opens up a new technology for the sub-shot-noiselimit detection of coherent signals in optical communication channels.

本文言語English
ページ(範囲)8107-8114
ページ数8
ジャーナルOptics Express
18
8
DOI
出版ステータスPublished - 2010 4月 12
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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