arXiv:1706.02125 · Physical Review A

Optimal discrimination of optical coherent states cannot always be realized by interfering with coherent light, photon counting, and feedback

Kenji Nakahira, Kentaro Kato, Tsuyoshi Sasaki Usuda

Published Feb 14, 2018• 12 citations

Abstract

A method is developed to analyze the performance of sequential measurements, thus providing a way to benchmark various optical receivers. In particular, it is proved that a Dolinar-like receiver cannot realize a ``minimum error quantum measurement'' when dealing with ternary coherent states.

DOI: 10.1103/physreva.97.022320

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