Open AccessTransporting continuous quantum variables of individual light pulses
Author(s) -
Yujiro Eto,
Yun Zhang,
Takuya Hirano
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.001360
Subject(s) - optics , quantum entanglement , physics , continuous variable , homodyne detection , quantum channel , wavelength , direct conversion receiver , quantum , quantum mechanics , mathematics , mathematical optimization
We experimentally demonstrate transporting continuous quantum variables of individual light pulses at telecommunication wavelengths by using continuous-variable Bell measurements and post-processing displacement techniques. Time-domain pulsed homodyne detectors are used in the Bell measurements and the quantum variables of input light are transported pulse-by-pulse. Fidelity of F = 0.57±0.03 is experimentally achieved with the aid of entanglement, which is higher than the bound (F(c) = 0.5) of the classical case in the absence of entanglement.