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题名: Quantum anti-Zeno effect without wave function reduction
作者: Ai, Q ;  Xu, DZ ;  Yi, S ;  Kofman, AG ;  Sun, CP ;  Nori, F
刊名: SCIENTIFIC REPORTS
出版日期: 2013
卷号: 3, 期号:-, 页码:1752
关键词: HIDDEN-VARIABLE THEORIES ;  DECAY ;  PARADOX ;  DECOHERENCE ;  COLLAPSE ;  SYSTEM
学科分类: Physics
通讯作者: Sun, CP (reprint author), RIKEN, CEMS, 2-1 Hirosawa, Wako, Saitama 3510198, Japan.
部门归属: [Ai, Qing; Xu, Dazhi; Yi, Su; Kofman, A. G.; Sun, C. P.; Nori, Franco] RIKEN, CEMS, Wako, Saitama 3510198, Japan; [Ai, Qing; Xu, Dazhi; Yi, Su] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Kofman, A. G.; Nori, Franco] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA; [Sun, C. P.] Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China; [Nori, Franco] Korea Univ, Dept Phys, Seoul 136713, South Korea
英文摘要: We study the measurement-induced enhancement of the spontaneous decay for a two-level subsystem, where measurements are treated as couplings between the excited state and an auxiliary state rather than the von Neumann's wave function reduction. The photon radiated in a fast decay of the atom, from the auxiliary state to the excited state, triggers a quasi-measurement, as opposed to a projection measurement. Our use of the term "quasi-measurement" refers to a "coupling-based measurement". Such frequent quasi-measurements result in an exponential decay of the survival probability of atomic initial state with a photon emission following each quasi-measurement. Our calculations show that the effective decay rate is of the same form as the one based on projection measurements. The survival probability of the atomic initial state obtained by tracing over all the photon states is equivalent to that of the atomic initial state with a photon emission following each quasi-measurement.
资助者: ARO; JSPS-RFBR [12-02-92100]; MEXT Kakenhi on Quantum Cybernetics; JSPS via its FIRST program; NSFC [10935010]; China Postdoctoral Science Foundation [20100470584]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000318537900001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15367
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Ai, Q,Xu, DZ,Yi, S,et al. Quantum anti-Zeno effect without wave function reduction[J]. SCIENTIFIC REPORTS,2013,3(-):1752.
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