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Title: Quantum displacement receiver for M-ary phase-shift-keyed coherent states

We propose quantum receivers for 3- and 4-ary phase-shift-keyed (PSK) coherent state signals to overcome the standard quantum limit (SQL). Our receiver, consisting of a displacement operation and on-off detectors with or without feedforward, provides an error probability performance beyond the SQL. We show feedforward operations can tolerate the requirement for the detector specifications.
Authors:
 [1] ; ; ;  [2] ; ;  [3] ;  [4]
  1. National Institute of Information and Communications Technology, 4-2-1 Nukui-kita, Koganei, Tokyo 184-8795, Japan and Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554 (Japan)
  2. National Institute of Information and Communications Technology, 4-2-1 Nukui-kita, Koganei, Tokyo 184-8795 (Japan)
  3. Department of Information Engineering, University of Padua, Via Gradenigo 6/B, 35131, Padova (Italy)
  4. Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554 (Japan)
Publication Date:
OSTI Identifier:
22390720
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1633; Journal Issue: 1; Conference: 11. International Conference on Quantum Communication, Measurement and Computation, Vienna (Austria), 30 Jul - 3 Aug 2012; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANNIHILATION OPERATORS; EIGENSTATES; ERRORS; OPERATION; PERFORMANCE; PHASE SHIFT; PROBABILITY; QUANTUM MECHANICS