Critical behavior in ultrastrong-coupled oscillators
DC Field | Value | Language |
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dc.contributor.author | Sudhir, Vivishek | - |
dc.contributor.author | Genoni, Marco G. | - |
dc.contributor.author | Lee, Jinhyoung | - |
dc.contributor.author | Kim, M. S. | - |
dc.date.accessioned | 2022-07-07T13:53:50Z | - |
dc.date.available | 2022-07-07T13:53:50Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2012-07 | - |
dc.identifier.issn | 1050-2947 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/144753 | - |
dc.description.abstract | We investigate the strong-coupling regime of a linear x-x coupled harmonic-oscillator system by performing a direct diagonalization of the Hamiltonian. It is shown that the x-x coupled Hamiltonian can be equivalently described by a Mach-Zehnder-type interferometer with a quadratic unitary operation in each of its arms. We show a sharp transition of the unitary operation from an elliptical phase rotator to an elliptical squeezer as the coupling gets stronger, leading to the continuous generation of entanglement, even for a significantly thermal state in the ultrastrong-coupled regime. It is also shown that this critical regime cannot be achieved by a classical Hookian coupling. Finally, the effect of a finite-temperature environment is analyzed, showing that entanglement can still be generated from a thermal state in the ultrastrong-coupled regime but is destroyed rapidly. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Critical behavior in ultrastrong-coupled oscillators | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jinhyoung | - |
dc.identifier.doi | 10.1103/PhysRevA.86.012316 | - |
dc.identifier.scopusid | 2-s2.0-84864225810 | - |
dc.identifier.wosid | 000306407600005 | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW A, v.86, no.1, pp.1 - 5 | - |
dc.relation.isPartOf | PHYSICAL REVIEW A | - |
dc.citation.title | PHYSICAL REVIEW A | - |
dc.citation.volume | 86 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 5 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Optics | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Optics | - |
dc.relation.journalWebOfScienceCategory | Physics, Atomic, Molecular & Chemical | - |
dc.subject.keywordPlus | QUANTUM | - |
dc.subject.keywordPlus | ENTANGLEMENT | - |
dc.subject.keywordPlus | Critical behavior | - |
dc.subject.keywordPlus | Critical regimes | - |
dc.subject.keywordPlus | Diagonalizations | - |
dc.subject.keywordPlus | Phase rotator | - |
dc.subject.keywordPlus | Sharp transition | - |
dc.subject.keywordPlus | Strong-coupling regime | - |
dc.subject.keywordPlus | Thermal state | - |
dc.subject.keywordPlus | Unitary operation | - |
dc.identifier.url | https://journals.aps.org/pra/abstract/10.1103/PhysRevA.86.012316 | - |
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