Efficient scheme for realizing quantum dense coding with GHZ state in separated low-Q cavities

doi:10.1088/1674-1056/23/6/060305

中国物理B ›› 2014, Vol. 23 ›› Issue (6): 60305-060305.doi: 10.1088/1674-1056/23/6/060305

Efficient scheme for realizing quantum dense coding with GHZ state in separated low-Q cavities

孙倩^a, 何娟^{a b}, 叶柳^a

a School of Physics & Material Science, Anhui University, Hefei 230601, China;
b School of Physics & Electronics Science, Fuyang Normal College, Fuyang 236037, China

收稿日期:2013-09-19 修回日期:2013-11-28 出版日期:2014-06-15 发布日期:2014-06-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11074002 and 61275119), the Doctoral Foundation of the Ministry of Education of China (Grant No. 20103401110003), and the Natural Science Research Project of Education Department of Anhui Province, China (Grant Nos. KJ2013A205, KJ2011ZD07, and KJ2012Z309).

Efficient scheme for realizing quantum dense coding with GHZ state in separated low-Q cavities

Sun Qian (孙倩)^a, He Juan (何娟)^{a b}, Ye Liu (叶柳)^a

a School of Physics & Material Science, Anhui University, Hefei 230601, China;
b School of Physics & Electronics Science, Fuyang Normal College, Fuyang 236037, China

Received:2013-09-19 Revised:2013-11-28 Online:2014-06-15 Published:2014-06-15
Contact: Ye Liu E-mail:yeliu@ahu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11074002 and 61275119), the Doctoral Foundation of the Ministry of Education of China (Grant No. 20103401110003), and the Natural Science Research Project of Education Department of Anhui Province, China (Grant Nos. KJ2013A205, KJ2011ZD07, and KJ2012Z309).

摘要/Abstract

摘要： We propose an efficient scheme for realizing quantum dense coding with three-particle GHZ state in separated low-Q cavities. In this paper, the GHZ state is first prepared with three atoms trapped, respectively, in three spatial separated cavities. Meanwhile, with the assistance of a coherent optical pulse and X-quadrature homodyne measurement, we can implement quantum dense coding with three-particle GHZ state with a higher probability. Our scheme can also be generalized to realize N-particle quantum dense coding.

关键词: GHZ state, quantum dense coding, low-Q cavity, X-quadrature homodyne measurement

Abstract: We propose an efficient scheme for realizing quantum dense coding with three-particle GHZ state in separated low-Q cavities. In this paper, the GHZ state is first prepared with three atoms trapped, respectively, in three spatial separated cavities. Meanwhile, with the assistance of a coherent optical pulse and X-quadrature homodyne measurement, we can implement quantum dense coding with three-particle GHZ state with a higher probability. Our scheme can also be generalized to realize N-particle quantum dense coding.

Key words: GHZ state, quantum dense coding, low-Q cavity, X-quadrature homodyne measurement

中图分类号: (Entanglement and quantum nonlocality)

03.65.Ud

03.67.-a (Quantum information) 03.67.Mn (Entanglement measures, witnesses, and other characterizations)

孙倩, 何娟, 叶柳. Efficient scheme for realizing quantum dense coding with GHZ state in separated low-Q cavities[J]. 中国物理B, 2014, 23(6): 60305-060305.

Sun Qian (孙倩), He Juan (何娟), Ye Liu (叶柳). Efficient scheme for realizing quantum dense coding with GHZ state in separated low-Q cavities[J]. Chin. Phys. B, 2014, 23(6): 60305-060305.

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Efficient scheme for realizing quantum dense coding with GHZ state in separated low-Q cavities

Efficient scheme for realizing quantum dense coding with GHZ state in separated low-Q cavities

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