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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 10 — Oct. 1, 2013
  • pp: 2704–2709

Roles of thermal noise and detector efficiency in distillation of continuous variable entanglement state

ShengLi Zhang, YuLi Dong, JianHong Shi, XuBo Zou, and GuangCan Guo  »View Author Affiliations


JOSA B, Vol. 30, Issue 10, pp. 2704-2709 (2013)
http://dx.doi.org/10.1364/JOSAB.30.002704


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Abstract

We address the degradation of continuous variable (CV) entanglement distillation in the presence of thermal environment and nonunity detecting efficiency. We explore the logarithmic negativity as a criteria and compare the output entanglement between the schemes of single-photon subtraction (PS) and two-PS. The probability of success is also investigated. We show that compared with detector efficiency, thermal noise plays a more dominant role in Gaussian entanglement distillation. Our results shed more light on the noise mechanism that influences realistic CV entanglement distillation and is of experimental relevance in developing a more efficient entanglement distillation scheme.

© 2013 Optical Society of America

OCIS Codes
(270.0270) Quantum optics : Quantum optics
(270.5290) Quantum optics : Photon statistics
(270.6570) Quantum optics : Squeezed states

ToC Category:
Quantum Optics

History
Original Manuscript: June 6, 2013
Manuscript Accepted: August 26, 2013
Published: September 25, 2013

Citation
ShengLi Zhang, YuLi Dong, JianHong Shi, XuBo Zou, and GuangCan Guo, "Roles of thermal noise and detector efficiency in distillation of continuous variable entanglement state," J. Opt. Soc. Am. B 30, 2704-2709 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-10-2704


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