Entanglement dynamics of two-qubit systems in different quantum noises

doi:10.1088/1674-1056/20/2/020304

中国物理B ›› 2011, Vol. 20 ›› Issue (2): 20304-020304.doi: 10.1088/1674-1056/20/2/020304

Entanglement dynamics of two-qubit systems in different quantum noises

方卯发¹, 李飞², 潘长宁³, 方见树³

(1)College of Physics and Information Science, Hunan Normal University, Changsha 410081, China; (2)Department of Physics, Hunan University of Science and Technology, Xiangtan 411201, China; (3)School of Science, Hunan University of Technology, Zhuzhou 412008, China

收稿日期:2010-08-05 修回日期:2010-08-18 出版日期:2011-02-15 发布日期:2011-02-15
基金资助:
Project supported by the Natural Science Foundation of Hunan Province of China (Grant No. 10JJ3088), the Key Research Foundation of the Education Bureau of Hunan Province of China (Grant No. 08A015), and the Funds of the Hunan Education Bureau of China (Grant Nos. 10C0616 and 08C344).

Entanglement dynamics of two-qubit systems in different quantum noises

Pan Chang-Ning(潘长宁)^a)^†,Li-Fei(李飞)^b), Fang Jian-Shu(方见树)^a),and Fang Mao-Fa(方卯发)^c)

^a School of Science, Hunan University of Technology, Zhuzhou 412008, China; ^b Department of Physics, Hunan University of Science and Technology, Xiangtan 411201, China; ^c College of Physics and Information Science, Hunan Normal University, Changsha 410081, China

Received:2010-08-05 Revised:2010-08-18 Online:2011-02-15 Published:2011-02-15
Supported by:
Project supported by the Natural Science Foundation of Hunan Province of China (Grant No. 10JJ3088), the Key Research Foundation of the Education Bureau of Hunan Province of China (Grant No. 08A015), and the Funds of the Hunan Education Bureau of China (Grant Nos. 10C0616 and 08C344).

摘要/Abstract

摘要： The entanglement dynamics of two-qubit systems in different quantum noises are investigated by means of the operator-sum representation method. We find that, except for the amplitude damping and phase damping quantum noise, the sudden death of entanglement is always observed in different two-qubit systems with generalized amplitude damping and depolarizing quantum noise.

关键词: entanglement dynamics, quantum noise, operator-sum representation

Abstract: The entanglement dynamics of two-qubit systems in different quantum noises are investigated by means of the operator-sum representation method. We find that, except for the amplitude damping and phase damping quantum noise, the sudden death of entanglement is always observed in different two-qubit systems with generalized amplitude damping and depolarizing quantum noise.

Key words: entanglement dynamics, quantum noise, operator-sum representation

中图分类号: (Entanglement and quantum nonlocality)

03.65.Ud

42.50.Lc (Quantum fluctuations, quantum noise, and quantum jumps)

潘长宁, 李飞, 方见树, 方卯发. Entanglement dynamics of two-qubit systems in different quantum noises[J]. 中国物理B, 2011, 20(2): 20304-020304.

Pan Chang-Ning(潘长宁), Li-Fei(李飞), Fang Jian-Shu(方见树), and Fang Mao-Fa(方卯发). Entanglement dynamics of two-qubit systems in different quantum noises[J]. Chin. Phys. B, 2011, 20(2): 20304-020304.

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Entanglement dynamics of two-qubit systems in different quantum noises

Entanglement dynamics of two-qubit systems in different quantum noises

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