Decoherence and measurement-induced correlations

doi:10.1103/PhysRevA.84.052309

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	Decoherence and measurement-induced correlations
	Luo, Shunlong; Li, Nan
	2011-11-07
发表期刊	PHYSICAL REVIEW A
ISSN	1050-2947
卷号	84 期号:5 页码:8
摘要	Decoherence arises from the interaction of a quantum system with the environment or, more precisely, from the measurement in which the environment "measures" the quantum system and establishes correlations with it. In this work, we first quantify measurement-induced correlations from both classical and quantum perspectives. Then we quantify decoherence via measurement-induced classical correlations. By virtue of an intrinsic and powerful link between entanglement (as quantified by entanglement of formation) and classical correlations (as quantified by the difference between the total correlations and quantum discord) in pure tripartite systems, we present general analytical formulas for measurement-induced correlations and decoherence measures for qubit systems and, furthermore, reveal a conservation relation for the information-disturbance tradeoff.
DOI	10.1103/PhysRevA.84.052309
语种	英语
资助项目	Science Fund for Creative Research Groups[10721101] ; National Center for Mathematics and Interdisciplinary Sciences[Y029152K51]
WOS研究方向	Optics ; Physics
WOS类目	Optics ; Physics, Atomic, Molecular & Chemical
WOS记录号	WOS:000296656000005
出版者	AMER PHYSICAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/11725
专题	应用数学研究所
通讯作者	Luo, Shunlong
作者单位	Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Luo, Shunlong,Li, Nan. Decoherence and measurement-induced correlations[J]. PHYSICAL REVIEW A,2011,84(5):8.
APA	Luo, Shunlong,&Li, Nan.(2011).Decoherence and measurement-induced correlations.PHYSICAL REVIEW A,84(5),8.
MLA	Luo, Shunlong,et al."Decoherence and measurement-induced correlations".PHYSICAL REVIEW A 84.5(2011):8.