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题名: Quantum anti-Zeno effect without rotating wave approximation
作者: Ai, Qing ;  Li, Yong ;  Zheng, Hang ;  Sun, C. P.
刊名: PHYSICAL REVIEW A
出版日期: 2010
卷号: 81, 期号:4, 页码:-
关键词: SYSTEM ;  DECAY ;  STATE ;  ATOM
学科分类: Physics
通讯作者: Ai, Q , Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
部门归属: [Ai, Q; Sun, CP] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Li, Y] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China; [Li, Y] Univ Hong Kong, Ctr Theoret & Computat Phys, Hong Kong, Hong Kong, Peoples R China; [Zheng, H] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200030, Peoples R China
英文摘要: In this article, we systematically study the spontaneous decay phenomenon of a two-level system under the influences of both its environment and repetitive measurements. In order to clarify some well-established conclusions about the quantum Zeno effect (QZE) and the quantum anti-Zeno effect (QAZE), we do not use the rotating wave approximation (RWA) in obtaining an effective Hamiltonian. We examine various spectral distributions by making use of our present approach in comparison with other approaches. It is found that with respect to a bare excited state even without the RWA, the QAZE can still happen for some cases, for example, the interacting spectra of hydrogen. However, for a physical excited state, which is a renormalized dressed state of the atomic state, the QAZE disappears and only the QZE remains. These discoveries inevitably show a transition from the QZE to the QAZE as the measurement interval changes.
资助者: NSFC[10974209, 10935010]; National 973 program[2006CB921205]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000277227300034
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5129
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Ai, Qing,Li, Yong,Zheng, Hang,et al. Quantum anti-Zeno effect without rotating wave approximation[J]. PHYSICAL REVIEW A,2010,81(4):-.
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