The entanglement dynamics of the bipartite quantum system: toward entanglement sudden death

doi:10.1088/1751-8113/42/2/025303

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	The entanglement dynamics of the bipartite quantum system: toward entanglement sudden death
	Cui, Wei 1,2; Xi, Zairong1 ; Pan, Yu 1,2
	2009-01-16
发表期刊	JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
ISSN	1751-8113
卷号	42 期号:2 页码:9
摘要	We investigate the entanglement dynamics of the bipartite quantum system between two qubits with the dissipative environment. We begin with the standard Markovian master equation in the Lindblad form and the initial state which is prepared in the extended Werner-like state:. rho(Phi)(AB)(0). We examine the conditions for entanglement sudden death (ESD) and calculate the corresponding ESD time by the Wootters concurrence. We observe that ESD is determined by the parameters such as the mean occupation number of the environment N, amount of initial entanglement alpha and the purity r. For N = 0, we get the analytical expressions of both ESD condition and ESD time. For N > 0 we give a theoretical analysis that ESD always occurs, and simulate the concurrence as a function of gamma(0)t and one of the parameters N, alpha and r.
DOI	10.1088/1751-8113/42/2/025303
语种	英语
资助项目	National Natural Science Foundation of China[60774099] ; National Natural Science Foundation of China[60221301] ; Chinese Academy of Sciences[KJCX3-SYW-S01]
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary ; Physics, Mathematical
WOS记录号	WOS:000261398000018
出版者	IOP PUBLISHING LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/8830
专题	系统科学研究所
通讯作者	Cui, Wei
作者单位	1.Chinese Acad Sci, Acad Math & Syst Sci, Inst Syst Sci, Key Lab Syst & Control Inst, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Cui, Wei,Xi, Zairong,Pan, Yu. The entanglement dynamics of the bipartite quantum system: toward entanglement sudden death[J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL,2009,42(2):9.
APA	Cui, Wei,Xi, Zairong,&Pan, Yu.(2009).The entanglement dynamics of the bipartite quantum system: toward entanglement sudden death.JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL,42(2),9.
MLA	Cui, Wei,et al."The entanglement dynamics of the bipartite quantum system: toward entanglement sudden death".JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL 42.2(2009):9.