Statistical properties of coherent photon-subtracted two-mode squeezed vacuum and its application in quantum teleportation

doi:10.1088/1674-1056/23/5/050301

中国物理B ›› 2014, Vol. 23 ›› Issue (5): 50301-050301.doi: 10.1088/1674-1056/23/5/050301

Statistical properties of coherent photon-subtracted two-mode squeezed vacuum and its application in quantum teleportation

张国平^a, 郑凯敏^a, 刘世右^a, 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

收稿日期:2013-10-23 修回日期:2013-11-13 出版日期:2014-05-15 发布日期:2014-05-15
基金资助:
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).

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

Received:2013-10-23 Revised:2013-11-13 Online:2014-05-15 Published:2014-05-15
Contact: Hu Li-Yun E-mail:hlyun2008@126.com
About author:03.65.-a; 42.50.Dv; 03.65.Wj; 03.67.Mn
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: coherent photon subtraction, two-mode squeezed vacuum, quantum teleportation, fidelity

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.

Key words: coherent photon subtraction, two-mode squeezed vacuum, quantum teleportation, fidelity

中图分类号:

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)

张国平, 郑凯敏, 刘世右, 胡利云. Statistical properties of coherent photon-subtracted two-mode squeezed vacuum and its application in quantum teleportation[J]. 中国物理B, 2014, 23(5): 50301-050301.

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[J]. Chin. Phys. B, 2014, 23(5): 50301-050301.

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Statistical properties of coherent photon-subtracted two-mode squeezed vacuum and its application in quantum teleportation

Statistical properties of coherent photon-subtracted two-mode squeezed vacuum and its application in quantum teleportation

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