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Quantum correlations between two cavity QED systems coupled by a mechanical resonator

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Abstract

Achieving quantum correlations between two distant systems is a desirable feature for quantum networking. In this work, we study a system composed of two quantum emitter-cavity subsystems spatially separated. A mechanical resonator couples to either both quantum emitters or both cavities leading to quantum correlations between both subsystems such as non-local light-matter dressed states and cavity–cavity normal mode splitting. These indirect couplings can be explained by an effective Hamiltonian for large energy detuning between the mechanical resonator and the atoms/cavities. Moreover, it is found that the optimal conditions of the physical parameters maximize the entanglement of phonon-mediated couplings.

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Authors and Affiliations

  1. Universidad Nacional de Colombia – Sede Bogotá, Facultad de Ciencias, Departamento de Física, Carrera 45 No. 26-85, C.P. 111321, Bogotá, Colombia

    Jhon Edinson Ramírez-Muñoz, Juan Pablo Restrepo Cuartas & Herbert Vinck-Posada

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  1. Jhon Edinson Ramírez-Muñoz
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  2. Juan Pablo Restrepo Cuartas
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  3. Herbert Vinck-Posada
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Correspondence to Jhon Edinson Ramírez-Muñoz.

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Ramírez-Muñoz, J.E., Restrepo Cuartas, J.P. & Vinck-Posada, H. Quantum correlations between two cavity QED systems coupled by a mechanical resonator. Eur. Phys. J. B 91, 268 (2018). https://doi.org/10.1140/epjb/e2018-90438-4

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  • DOI: https://doi.org/10.1140/epjb/e2018-90438-4

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