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

Journal Article · Thu Dec 04 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4903095· OSTI ID:22390720

Izumi, Shuro ^[1]; Takeoka, Masahiro; Fujiwara, Mikio; Sasaki, Masahide ^[2]; Pozza, Nicola Dalla; Assalini, Antonio ^[3]; Ema, Kazuhiro ^[4]

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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)

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.

• OSTI ID: 22390720
• Journal Information: AIP Conference Proceedings, Vol. 1633, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANNIHILATION OPERATORS
EIGENSTATES
ERRORS
OPERATION
PERFORMANCE
PHASE SHIFT
PROBABILITY
QUANTUM MECHANICS