Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이진형 | - |
dc.date.accessioned | 2018-07-26T02:02:05Z | - |
dc.date.available | 2018-07-26T02:02:05Z | - |
dc.date.issued | 2012-07 | - |
dc.identifier.citation | Physical Review A, 2012, 86(1), 012316 | en_US |
dc.identifier.issn | 1050-2947 | - |
dc.identifier.uri | https://journals.aps.org/pra/abstract/10.1103/PhysRevA.86.012316 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/73035 | - |
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. | en_US |
dc.description.sponsorship | M. S. K. thanks Wonmin Son for discussions. This work was supported by the Qatar National Research Fund (NPRP Grant No. 4-554-1-084). J.L. acknowledges support from a National Research Foundation of Korea (NRF) Grant (No. 2010-0015059). M. G. G. acknowledges fellowship support from UK EPSRC (No. EP/I026436/1) and thanks Alessio Serafini and Matteo Binazzi for interesting and useful discussions. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Amer Physical SOC | en_US |
dc.title | Critical behavior in ultrastrong-coupled oscillators | en_US |
dc.type | Article | en_US |
dc.relation.no | 1 | - |
dc.relation.volume | 86 | - |
dc.identifier.doi | 10.1103/PhysRevA.86.012316 | - |
dc.relation.page | 1-2 | - |
dc.relation.journal | PHYSICAL REVIEW A | - |
dc.contributor.googleauthor | Sudhir, V. | - |
dc.contributor.googleauthor | Genoni, M.G. | - |
dc.contributor.googleauthor | Lee, J. | - |
dc.contributor.googleauthor | Kim, M.S. | - |
dc.relation.code | 2012207600 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICS | - |
dc.identifier.pid | hyoung | - |
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