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Article: Quantum anti-Zeno effect without rotating wave approximation

TitleQuantum anti-Zeno effect without rotating wave approximation
Authors
KeywordsPhysics
Issue Date2010
PublisherAmerican 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 How to Cite?
AbstractIn 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 Identifierhttp://hdl.handle.net/10722/123839
ISSN
2014 Impact Factor: 2.808
2015 SCImago Journal Rankings: 1.418
ISI Accession Number ID
Funding AgencyGrant Number
NSFC10974209
10935010
National 973 program2006CB921205
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 FieldValueLanguage
dc.contributor.authorAi, Qen_HK
dc.contributor.authorLi, Yen_HK
dc.contributor.authorZheng, Hen_HK
dc.contributor.authorSun, CPen_HK
dc.date.accessioned2010-10-04T07:49:16Z-
dc.date.available2010-10-04T07:49:16Z-
dc.date.issued2010en_HK
dc.identifier.citationPhysical Review A - Atomic, Molecular, And Optical Physics, 2010, v. 81 n. 4en_HK
dc.identifier.issn1050-2947en_HK
dc.identifier.urihttp://hdl.handle.net/10722/123839-
dc.description.abstractIn 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.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://pra.aps.orgen_HK
dc.relation.ispartofPhysical Review A - Atomic, Molecular, and Optical Physicsen_HK
dc.rightsPhysical Review A (Atomic, Molecular and Optical Physics). Copyright © American Physical Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysics-
dc.titleQuantum anti-Zeno effect without rotating wave approximationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://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.emailLi, Y: Yongli@hkucc.hku.hken_HK
dc.identifier.authorityLi, Y=rp00743en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevA.81.042116en_HK
dc.identifier.scopuseid_2-s2.0-77951699707en_HK
dc.identifier.hkuros171511-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77951699707&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume81en_HK
dc.identifier.issue4en_HK
dc.identifier.isiWOS:000277227300034-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridAi, Q=35317096700en_HK
dc.identifier.scopusauthoridLi, Y=15822576000en_HK
dc.identifier.scopusauthoridZheng, H=7403441023en_HK
dc.identifier.scopusauthoridSun, CP=7404248944en_HK

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