Demonstration of coherent-state discrimination using a displacement- controlled photon-number-resolving detector

Christoffer Wittmann, Ulrik L. Andersen, Masahiro Takeoka, Denis Sych, Gerd Leuchs

研究成果: Article査読

64 被引用数 (Scopus)

抄録

We experimentally demonstrate a new measurement scheme for the discrimination of two coherent states. The measurement scheme is based on a displacement operation followed by a photon-number-resolving detector, and we show that it outperforms the standard homodyne detector which we, in addition, prove to be optimal within all Gaussian operations including conditional dynamics. We also show that the non-Gaussian detector is superior to the homodyne detector in a continuous variable quantum key distribution scheme.

本文言語English
論文番号100505
ジャーナルPhysical review letters
104
10
DOI
出版ステータスPublished - 2010 3 12
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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