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Article: Quantum anti-Zeno effect without rotating wave approximation
Title | Quantum anti-Zeno effect without rotating wave approximation | ||||||
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Authors | |||||||
Keywords | Physics | ||||||
Issue Date | 2010 | ||||||
Publisher | American Physical Society. The Journal's web site is located at http://pra.aps.org | ||||||
Citation | Physical Review A (Atomic, Molecular and Optical Physics), 2010, v. 81 n. 4, article no. 042116 How to Cite? | ||||||
Abstract | 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. © 2010 The American Physical Society. | ||||||
Persistent Identifier | http://hdl.handle.net/10722/123839 | ||||||
ISSN | 2014 Impact Factor: 2.808 | ||||||
ISI Accession Number ID |
Funding Information: This work was supported by NSFC through Grants No. 10974209 and No. 10935010 and by the National 973 program (Grant No. 2006CB921205). | ||||||
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ai, Q | en_HK |
dc.contributor.author | Li, Y | en_HK |
dc.contributor.author | Zheng, H | en_HK |
dc.contributor.author | Sun, CP | en_HK |
dc.date.accessioned | 2010-10-04T07:49:16Z | - |
dc.date.available | 2010-10-04T07:49:16Z | - |
dc.date.issued | 2010 | en_HK |
dc.identifier.citation | Physical Review A (Atomic, Molecular and Optical Physics), 2010, v. 81 n. 4, article no. 042116 | - |
dc.identifier.issn | 1050-2947 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/123839 | - |
dc.description.abstract | 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. © 2010 The American Physical Society. | en_HK |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://pra.aps.org | en_HK |
dc.relation.ispartof | Physical Review A (Atomic, Molecular and Optical Physics) | - |
dc.rights | Copyright 2010 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevA.81.042116 | - |
dc.subject | Physics | - |
dc.title | Quantum anti-Zeno effect without rotating wave approximation | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1050-2947&volume=81&issue=4&spage=042116: 1&epage=12&date=2010&atitle=Quantum+anti-Zeno+effect+without+rotating+wave+approximation | - |
dc.identifier.email | Li, Y: Yongli@hkucc.hku.hk | en_HK |
dc.identifier.authority | Li, Y=rp00743 | en_HK |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevA.81.042116 | en_HK |
dc.identifier.scopus | eid_2-s2.0-77951699707 | en_HK |
dc.identifier.hkuros | 171511 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-77951699707&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 81 | en_HK |
dc.identifier.issue | 4 | en_HK |
dc.identifier.spage | article no. 042116 | - |
dc.identifier.epage | article no. 042116 | - |
dc.identifier.isi | WOS:000277227300034 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Ai, Q=35317096700 | en_HK |
dc.identifier.scopusauthorid | Li, Y=15822576000 | en_HK |
dc.identifier.scopusauthorid | Zheng, H=7403441023 | en_HK |
dc.identifier.scopusauthorid | Sun, CP=7404248944 | en_HK |
dc.identifier.issnl | 1050-2947 | - |