PHASE-CONJUGATE QUANTUM COMMUNICATION WITH OPTICAL HETERODYNE-DETECTION

Authors
SHAPIRO JH
Citation
Jh. Shapiro, PHASE-CONJUGATE QUANTUM COMMUNICATION WITH OPTICAL HETERODYNE-DETECTION, Optics letters, 20(9), 1995, pp. 1059-1061
Citations number
8
Categorie Soggetti
Optics
Journal title
Optics letters → ACNP
ISSN journal
01469592
Volume
20
Issue
9
Year of publication
1995
Pages
1059 - 1061
Database
ISI
SICI code
0146-9592(1995)20:9<1059:PQCWOH>2.0.ZU;2-Q
Abstract
A quantum heterodyne-detection system is described that affords K-ary phase-based digital communication at zero error probability at an aver age photon number of approximately K root 3/2. In phase-based precisio n measurement-at the same average photon number-this system can measur e an arbitrary c-number phase shift to within +/-pi/K rad with probabi lity one.