Demonstration of Near-Optimal Discrimination of Optical Coherent States

Christoffer Wittmann, Masahiro Takeoka, Katiuscia N Cassemiro, Masahide Sasaki, Gerd Leuchs, Ulrik Lund Andersen

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Abstract

The optimal discrimination of nonorthogonal quantum states with minimum error probability is a fundamental task in quantum measurement theory as well as an important primitive in optical communication. In this work, we propose and experimentally realize a new and simple quantum measurement strategy capable of discriminating two coherent states with smaller error probabilities than can be obtained using the standard measurement devices: the Kennedy receiver and the homodyne receiver.
Original languageEnglish
JournalPhysical Review Letters
Volume101
Issue number21
Pages (from-to)210501
ISSN0031-9007
DOIs
Publication statusPublished - 2008

Bibliographical note

Copyright 2008 American Physical Society

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