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Title: Experimentally feasible purification of continuous-variable entanglement

Abstract

We propose a scheme for purification and distillation of squeezed and entangled continuous-variable states of light transmitted through a channel exhibiting phase fluctuations. The outstanding advantage of the suggested protocol is its experimental feasibility since it only involves an interference of two copies of the decohered state on a balanced beam splitter, a homodyne measurement on one of the output beams, and a conditioning on the measurement outcome. The purification can counteract the detrimental effects of phase fluctuations in optical quantum-communication networks.

Authors:
;  [1];  [2];  [3]
  1. Department of Optics, Palacky University, 17. listopadu 50, 77200 Olomouc (Czech Republic)
  2. School of Mathematics and Physics, The Queen's University, Belfast BT7 1NN (United Kingdom)
  3. Max-Planck-Institut fuer Gravitationsphysik (Albert-Einstein-Institut) and Universitaet Hannover, Callinstrass 38, 30167 Hannover (Germany)
Publication Date:
OSTI Identifier:
20982434
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.75.050302; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BEAM SPLITTING; COMMUNICATIONS; INFORMATION THEORY; INTERFERENCE; LIGHT TRANSMISSION; QUANTUM DECOHERENCE; QUANTUM ENTANGLEMENT; QUANTUM MECHANICS

Citation Formats

Fiurasek, Jaromir, Filip, Radim, Marek, Petr, and Schnabel, Roman. Experimentally feasible purification of continuous-variable entanglement. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.050302.
Fiurasek, Jaromir, Filip, Radim, Marek, Petr, & Schnabel, Roman. Experimentally feasible purification of continuous-variable entanglement. United States. doi:10.1103/PHYSREVA.75.050302.
Fiurasek, Jaromir, Filip, Radim, Marek, Petr, and Schnabel, Roman. Tue . "Experimentally feasible purification of continuous-variable entanglement". United States. doi:10.1103/PHYSREVA.75.050302.
@article{osti_20982434,
title = {Experimentally feasible purification of continuous-variable entanglement},
author = {Fiurasek, Jaromir and Filip, Radim and Marek, Petr and Schnabel, Roman},
abstractNote = {We propose a scheme for purification and distillation of squeezed and entangled continuous-variable states of light transmitted through a channel exhibiting phase fluctuations. The outstanding advantage of the suggested protocol is its experimental feasibility since it only involves an interference of two copies of the decohered state on a balanced beam splitter, a homodyne measurement on one of the output beams, and a conditioning on the measurement outcome. The purification can counteract the detrimental effects of phase fluctuations in optical quantum-communication networks.},
doi = {10.1103/PHYSREVA.75.050302},
journal = {Physical Review. A},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}