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	Zeno dynamics in quantum open systems
	Zhang, Yu-Ran1; Fan, Heng1,2
刊名	Scientific reports
	2015-06-23
卷号	5页码:8
ISSN号	2045-2322
DOI	10.1038/srep11509
通讯作者	Fan, heng(hfan@iphy.ac.cn)
英文摘要	Quantum zeno effect shows that frequent observations can slow down or even stop the unitary time evolution of an unstable quantum system. this effect can also be regarded as a physical consequence of the statistical indistinguishability of neighboring quantum states. the accessibility of quantum zeno dynamics under unitary time evolution can be quantitatively estimated by quantum zeno time in terms of fisher information. in this work, we investigate the accessibility of quantum zeno dynamics in quantum open systems by calculating noisy fisher information when a trace preserving and completely positive map is assumed. we firstly study the consequences of non-markovian noise on quantum zeno effect and give the exact forms of the dissipative fisher information and the quantum zeno time. then, for the operator-sum representation, an achievable upper bound of the quantum zeno time is given with the help of the results in noisy quantum metrology. it is of significance that the noise reducing the accuracy in the entanglement-enhanced parameter estimation can conversely be favorable for the accessibility of quantum zeno dynamics of entangled states.
WOS关键词	STATISTICAL DISTANCE ; ENHANCED METROLOGY ; LIMIT
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000356664900001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374070
专题	物理研究所
通讯作者	Fan, Heng
作者单位	1.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 2.Collaborat Innovat Ctr Quantum Matter, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yu-Ran,Fan, Heng. Zeno dynamics in quantum open systems[J]. Scientific reports,2015,5:8.
APA	Zhang, Yu-Ran,&Fan, Heng.(2015).Zeno dynamics in quantum open systems.Scientific reports,5,8.
MLA	Zhang, Yu-Ran,et al."Zeno dynamics in quantum open systems".Scientific reports 5(2015):8.

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