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  Nonclassical correlations in a two-mode optomechanical system

El Qars, J., Daoud, M., & Laamara, R. A. (2016). Nonclassical correlations in a two-mode optomechanical system. International Journal of Modern Physics B [Condensed Matter Physics; Statistical Physics; Applied Physics], 30(20): 1650134. doi:10.1142/S0217979216501344.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-A260-B Version Permalink: http://hdl.handle.net/21.11116/0000-0001-E48A-2
Genre: Journal Article

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 Creators:
El Qars, J.1, Author
Daoud, Mohammed2, Author              
Laamara, R. Ahl1, Author
Affiliations:
1external, ou_persistent22              
2Max Planck Institute for the Physics of Complex Systems, Max Planck Society, ou_2117288              

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 MPIPKS: Ultracold matter
 Abstract: The pairwise quantum correlations in a tripartite optomechanical system comprising a mechanical mode and two optical modes are analyzed. The Simon criterion is used as a witness of the separability. Whereas the Gaussian discord is employed to capture the quantumness of correlations. Both entanglement and Gaussian discord are evaluated as functions of the parameters characterizing the environment and the system (temperature, squeezing and optomechanical coupling). We work in the resolved-sideband regime. We show that it is possible to reach three simultaneous bipartite entanglements via the quantum correlations transfer from the squeezed light to the system. While, even without squeezed light, the quantumness of correlations can be captured simultaneously between the three modes for a very wide range of parameters. Specifically, we find that the two optical modes exhibit more quantum correlations in comparison with the entangled mechanical-optical modes. Finally, unlike the two hybrid subsystems, the purely optical one seems more resilient against the environmental destructive effects.

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 Dates: 2016-08-10
 Publication Status: Published in print
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 Identifiers: DOI: 10.1142/S0217979216501344
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Title: International Journal of Modern Physics B [Condensed Matter Physics; Statistical Physics; Applied Physics]
  Other : Int. Journ. Mod. Phys. B
Source Genre: Journal
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Publ. Info: Singapore : World Scientific
Pages: - Volume / Issue: 30 (20) Sequence Number: 1650134 Start / End Page: - Identifier: ISSN: 0217-9792
CoNE: /journals/resource/954925493938_1