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Chin. Phys. B, 2014, Vol. 23(5): 050301    DOI: 10.1088/1674-1056/23/5/050301
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Statistical properties of coherent photon-subtracted two-mode squeezed vacuum and its application in quantum teleportation

Zhang Guo-Ping (张国平)a, Zheng Kai-Min (郑凯敏)a, Liu Shi-You (刘世右)a, Hu Li-Yun (胡利云)a b
a College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China;
b Key Laboratory of Optoelectronic and Telecommunication of Jiangxi, Nanchang 330022, China
Abstract  We introduce a kind of non-Gaussian entangled state, which can be obtained by operating a non-local coherent photon-subtraction operation on a two-mode squeezed vacuum. It is found that its normalization factor is only related to the Legendre polynomials, which is a compact expression. Its statistical properties are discussed by the negative region Wigner function with the analytical expression. As an application, the quantum teleportation for coherent states is considered by using the non-Gaussian state as an entangled channel. It is found that the teleportation fidelity can be enhanced by this non-Gaussian operation.
Keywords:  coherent photon subtraction      two-mode squeezed vacuum      quantum teleportation      fidelity  
Received:  23 October 2013      Revised:  13 November 2013      Accepted manuscript online: 
PACS:  03.65.-a  
  42.50.Dv (Quantum state engineering and measurements)  
  03.65.Wj (State reconstruction, quantum tomography)  
  03.67.Mn (Entanglement measures, witnesses, and other characterizations)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11264018) and the Natural Science Foundation of Jiangxi Province, China (Grant No. 20132BAB212006).
Corresponding Authors:  Hu Li-Yun     E-mail:
About author:  03.65.-a; 42.50.Dv; 03.65.Wj; 03.67.Mn

Cite this article: 

Zhang Guo-Ping (张国平), Zheng Kai-Min (郑凯敏), Liu Shi-You (刘世右), Hu Li-Yun (胡利云) Statistical properties of coherent photon-subtracted two-mode squeezed vacuum and its application in quantum teleportation 2014 Chin. Phys. B 23 050301

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