Relation between initial conditions and entanglement sudden death for two-qubit extended Werner-like states

doi:10.1088/1674-1056/22/8/080303

中国物理B ›› 2013, Vol. 22 ›› Issue (8): 80303-080303.doi: 10.1088/1674-1056/22/8/080303

Relation between initial conditions and entanglement sudden death for two-qubit extended Werner-like states

杨百元, 方卯发, 黄江

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control, Ministry of Education, and Department of Physics, Hunan Normal University, Changsha 410081, China

收稿日期:2012-11-30 修回日期:2013-02-26 出版日期:2013-06-27 发布日期:2013-06-27
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11074072).

Relation between initial conditions and entanglement sudden death for two-qubit extended Werner-like states

Yang Bai-Yuan (杨百元), Fang Mao-Fa (方卯发), Huang Jiang (黄江)

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control, Ministry of Education, and Department of Physics, Hunan Normal University, Changsha 410081, China

Received:2012-11-30 Revised:2013-02-26 Online:2013-06-27 Published:2013-06-27
Contact: Fang Mao-Fa E-mail:mffang@hunnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11074072).

摘要/Abstract

摘要： In this paper, the dynamical behavior of entanglement of an uncoupled two-qubit system, which interacts with independent identical amplitude damping environments and is initially prepared in the extended Werner-like (EWL) states, is investigated. The results show that whether entanglement sudden death (ESD) of an EWL state will occur or not depends on initial purity and concurrence. The boundaries between ESD states and ESD-free states for two kinds of EWL states are found to be different. Furthermore, some regions are shown where ESD states can be transformed into ESD-free states by local unitary operations.

关键词: entanglement sudden death, extended Werner-like states, ESD states, ESD-free states

Abstract: In this paper, the dynamical behavior of entanglement of an uncoupled two-qubit system, which interacts with independent identical amplitude damping environments and is initially prepared in the extended Werner-like (EWL) states, is investigated. The results show that whether entanglement sudden death (ESD) of an EWL state will occur or not depends on initial purity and concurrence. The boundaries between ESD states and ESD-free states for two kinds of EWL states are found to be different. Furthermore, some regions are shown where ESD states can be transformed into ESD-free states by local unitary operations.

Key words: entanglement sudden death, extended Werner-like states, ESD states, ESD-free states

中图分类号: (Entanglement and quantum nonlocality)

03.65.Ud

03.67.-a (Quantum information)

杨百元, 方卯发, 黄江. Relation between initial conditions and entanglement sudden death for two-qubit extended Werner-like states[J]. 中国物理B, 2013, 22(8): 80303-080303.

Yang Bai-Yuan (杨百元), Fang Mao-Fa (方卯发), Huang Jiang (黄江). Relation between initial conditions and entanglement sudden death for two-qubit extended Werner-like states[J]. Chin. Phys. B, 2013, 22(8): 80303-080303.

参考文献 41

[1]	Nielsen M A and Chuang I L 2000 Quantum Computation and Quantum Information (Cambridge: Cambridge University Press)
[2]	Bennett C H, Brassard G, Crepeau C, Jozsa R, Peres A and Wootters W K 1993 Phys. Rev. Lett. 70 1895
[3]	Deutsch D, Ekert A, Jozsa R, Macchiavello C, Popescu S and Sanpera A 1996 Phys. Rev. Lett. 77 2818
[4]	Shor P W 1995 Phys. Rev. A 52 2493
[5]	Jozsa R and Linden N 2003 Proc. R. Soc. Lond. A 459 2011
[6]	Li M, Fei S M and Li-Jost X Q 2011 Chin. Sci. Bull. 56 945
[7]	Qian Y, Zhang Y Q and Xu J B 2012 Chin. Sci. Bull. 57 1637
[8]	Yue H D, Zhang Y and Gong J 2012 Sci. China: Phys. Mech. Astron. 55 1641
[9]	Zhu Y Y and Zhang Y 2012 Sci. China: Phys. Mech. Astron. 55 2081
[10]	Yu T and Eberly J H 2004 Phys. Rev. Lett. 93 140404
[11]	Yu T and Eberly J H 2006 Opt. Commun. 264 393
[12]	Yu T and Eberly J H 2007 Science 316 555
[13]	Al-Qasimi A and James D F V 2008 Phys. Rev. A 77 012117
[14]	Chou C H, Yu T and Hu B L 2008 Phys. Rev. E 77 011112
[15]	Scala M, Migliore R and Messina A 2008 J. Phys. A: Math. Theor. 41 435304
[16]	Xu J W and Chen Q H 2012 Chin. Phys. B 21 040302
[17]	Yönaç M, Yu T and Eberly J H 2006 J. Phys. B 39 S621
[18]	Ikram M, Li F L and Zubairy M S 2007 Phys. Rev. A 75 062336
[19]	Fan H 2010 Chin. Sci. Bull. 55 1758
[20]	Ficek Z and Tanás R 2006 Phys. Rev. A 74 024304
[21]	Paz J P and Roncaglia A J 2008 Phys. Rev. Lett. 100 220401
[22]	Huang J, Fang M F, Yang B Y and Liu X 2012 Chin. Phys. B 21 084205
[23]	Sun Z, Wang X G and Sun C P 2007 Phys. Rev. A 75 062312
[24]	Ann K and Jaeger G 2007 Phys. Rev. B 76 044101
[25]	Xu J Z, Guo J B, Wen W, Bai Y K and Yan F L 2012 Chin. Phys. B 21 080305
[26]	Hu Y H and Wang J Q 2012 Chin. Phys. B 21 014203
[27]	Huang J H and Zhu S Y 2007 Phys. Rev. A 76 062322
[28]	Roszak K and Machnikowski P 2006 Phys. Rev. A 73 022313
[29]	Ann K and Jaeger G 2007 Phys. Rev. B 75 115307
[30]	Bellomo B, Lo Franco R and Compagno G 2007 Phys. Rev. Lett. 99 160502
[31]	Rau A R P, Ali M and Alber G 2008 Europhys. Lett. 82 40002
[32]	Siomau M and Kamli A A 2012 Phys. Rev. A 86 032304
[33]	Qian X F and Eberly J H 2012 Phys. Lett. A 45 376
[34]	Bellomo B, Lo Franco R and Compagno G 2008 Phys. Rev. A 77 032342
[35]	Werner R 1989 Phys. Rev. A 40 4277
[36]	Tang Y C, Li Y S, Hao L, Hou S Y, and Long G L 2012 Phys. Rev. A 85 022329
[37]	Popescu S 1994 Phys. Rev. Lett. 72 797
[38]	Jamróz A 2006 J. Phys. A: Math. Gen. 39 7727
[39]	Wootters W K 1998 Phys. Rev. Lett. 80 2245
[40]	Yu T and Eberly J H 2007 Quantum Inf. Comput. 7 459
[41]	Werlang T, Souza S, Fanchini F F and Villas B C J 2009 Phys. Rev. A 80 024103

Relation between initial conditions and entanglement sudden death for two-qubit extended Werner-like states

Relation between initial conditions and entanglement sudden death for two-qubit extended Werner-like states

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 41

相关文章 10

Metrics

本文评价

推荐阅读 0

[1]	杜少将, 夏云杰, 段德洋, 张路, 高强. Optimizing quantum correlation dynamics by weak measurement in dissipative environment[J]. , 2015, 24(4): 44205-044205.
[2]	吴琴, 张智明. Entanglement of two two-level atoms trapped in coupled cavities with a Kerr medium[J]. 中国物理B, 2014, 23(3): 34203-034203.
[3]	罗成立, 缪龙, 郑小兰, 陈子翃, 廖长庚. Sudden death of entanglement of two atoms interacting with thermal fields[J]. 中国物理B, 2011, 20(8): 80303-080303.
[4]	单传家, 陈涛, 刘继兵, 程维文, 刘堂昆, 黄燕霞, 李宏. Sudden birth versus sudden death of entanglement for the extended Werner-like state in a dissipative environment[J]. 中国物理B, 2010, 19(6): 60303-060303.
[5]	欧阳锡城, 方卯发, 康国栋, 邓小娟, 黄利元. Entanglement dynamics of a double two-photon Jaynes－Cummings model with Kerr-like medium[J]. 中国物理B, 2010, 19(3): 30309-030309.
[6]	曾红芳, 邵彬, 杨林广, 李建, 邹健. Entanglement sudden death induced by the Dzialoshinskii--Moriya interaction[J]. 中国物理B, 2009, 18(8): 3265-3270.
[7]	韩峰, 夏云杰. Finite-time disentanglement induced by single-mode thermal field[J]. 中国物理B, 2009, 18(12): 5144-5148.
[8]	陈丽, 邵晓强, 张寿. Entanglement sudden death of two atoms interacting with a cavity via the two-photon process in a strong-driving-assisted system[J]. 中国物理B, 2009, 18(11): 4676-4682.
[9]	满忠晓, 夏云杰. A study on entanglement dynamics for a four-qubit model[J]. 中国物理B, 2008, 17(9): 3198-3202.
[10]	郑强, 张小平, 任中洲. Control of entanglement sudden death by Kerr medium[J]. 中国物理B, 2008, 17(10): 3553-3558.