Continuous variable entanglement measurement without phase locking

Dong Wang; Xianshan Huang

doi:10.1080/09500340.2011.621034

Continuous variable entanglement measurement without phase locking

Quantum Physics 2015-05-28 v1

Authors: Dong Wang , Xianshan Huang

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Abstract

A new simple entanglement measurement method is proposed for the bright EPR beams generated from a non-degenerate optical parametric amplifier operating at deamplification. Due to the output signal and idler modes are frequency degenerate and in phase, the needed phase shift of interference for the measurement of the correlated phase quadratures and anti-correlated amplitude quadratures can be accomplished by a quarter-wave plate and a half wave plate without separating the signal and idler beam. Therefore, phase locking and local oscillators are avoided.

Keywords

quantum entanglement interferometry parametric amplifier

Cite

@article{arxiv.1106.3000,
  title  = {Continuous variable entanglement measurement without phase locking},
  author = {Dong Wang and Xianshan Huang},
  journal= {arXiv preprint arXiv:1106.3000},
  year   = {2015}
}

Comments

8 pages,3 figures

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