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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 6 — Mar. 25, 2013
  • pp: 6670–6680

Displacement-enhanced entanglement distillation of single-mode-squeezed entangled states

Anders Tipsmark, Jonas S. Neergaard-Nielsen, and Ulrik L. Andersen  »View Author Affiliations

Optics Express, Vol. 21, Issue 6, pp. 6670-6680 (2013)

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It has been shown that entanglement distillation of Gaussian entangled states by means of local photon subtraction can be improved by local Gaussian transformations. Here we show that a similar effect can be expected for the distillation of an asymmetric Gaussian entangled state that is produced by a single squeezed beam. We show that for low initial entanglement, our largely simplified protocol generates more entanglement than previous proposed protocols. Furthermore, we show that the distillation scheme also works efficiently on decohered entangled states as well as with a practical photon subtraction setup.

© 2013 OSA

OCIS Codes
(000.6800) General : Theoretical physics
(270.5290) Quantum optics : Photon statistics
(270.6570) Quantum optics : Squeezed states
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

Original Manuscript: January 2, 2013
Revised Manuscript: March 1, 2013
Manuscript Accepted: March 2, 2013
Published: March 11, 2013

Anders Tipsmark, Jonas S. Neergaard-Nielsen, and Ulrik L. Andersen, "Displacement-enhanced entanglement distillation of single-mode-squeezed entangled states," Opt. Express 21, 6670-6680 (2013)

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