Distillation of Atmospherically Disturbed Continuous Variable Quantum Entanglement with Photon Subtraction
Sheng-Li Zhang1** , Jian-Sheng Guo1 , Jian-Hong Shi1 , Xu-Bo Zou2
1 The PLA Information Engineering University, Zhengzhou 4500042 Key Laboratory of Quantum information, University of Science and Technology of China, Hefei 230026
Abstract ：Entanglement distillation is a probabilistic quantum operation which tries to repair entanglement after environment-induced decoherence. All known distillations of continuous variable entanglement always assume that the entanglement is distributed via a standard attenuating channel with fixed photon loss rate, which is fairly idealized without many realistic effects taken into account. Here we investigate the problem of distillation of entanglement transmitted via atmospheric channel, with transmittance being highly probabilistic and unfixed. Two typical distillation schemes, i.e., single-sided photon subtraction and bi-sided photon subtraction, are investigated.
收稿日期: 2016-03-10
出版日期: 2016-08-01
:
03.67.Bg
(Entanglement production and manipulation)
42.50.Ex
(Optical implementations of quantum information processing and transfer)
03.67.Hk
(Quantum communication)
03.67.Mn
(Entanglement measures, witnesses, and other characterizations)
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2016, Vol. 33 
