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https://doi.org/10.1103/PhysRevA.89.014104
DC Field | Value | |
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dc.title | Decoherence induced by a composite environment | |
dc.contributor.author | Chaudhry, A.Z. | |
dc.contributor.author | Gong, J. | |
dc.date.accessioned | 2014-10-16T09:20:04Z | |
dc.date.available | 2014-10-16T09:20:04Z | |
dc.date.issued | 2014-01-31 | |
dc.identifier.citation | Chaudhry, A.Z., Gong, J. (2014-01-31). Decoherence induced by a composite environment. Physical Review A - Atomic, Molecular, and Optical Physics 89 (1) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.89.014104 | |
dc.identifier.issn | 10502947 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/96151 | |
dc.description.abstract | It is not always justified to model the environment of a realistic quantum system as a collection of harmonic oscillators or two-level systems. To explore interesting physics associated with a composite environment, here we study the dynamics of a qubit coupled to a second two-level system, which is in turn coupled to a harmonic-oscillator bath. That is, the qubit of interest is in the presence of a composite environment consisting of the second two-level system and a conventional harmonic-oscillator bath. We investigate the issue of pointer states of decoherence for the qubit for different coupling strengths between the qubit and such a composite environment. It is shown that for weak-, intermediate-, or strong-coupling strengths, the qubit's reduced density matrix has a coupling-strength-dependent diagonal representation, thus yielding coupling-strength-dependent computational pointer states. Interestingly, the associated decoherence rate can decrease as the coupling strength increases. © 2014 American Physical Society. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1103/PhysRevA.89.014104 | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | PHYSICS | |
dc.description.doi | 10.1103/PhysRevA.89.014104 | |
dc.description.sourcetitle | Physical Review A - Atomic, Molecular, and Optical Physics | |
dc.description.volume | 89 | |
dc.description.issue | 1 | |
dc.description.page | - | |
dc.description.coden | PLRAA | |
dc.identifier.isiut | 000335225700017 | |
Appears in Collections: | Staff Publications |
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