Nonreciprocal behaviour between photon and phonon in coupled optomechanical systems |
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Authors: | S Shakeri M H Zandi A Bahrampour |
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Affiliation: | 1. Faculty of Physics, Shahid Bahonar University of Kerman, Kerman, Iran.;2. Department of Physics, Sharif University of Technology, Tehran, Iran. |
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Abstract: | It is shown that the asymmetry coupling between two coupled optomechanical cavities leads to special class of PT-symmetric model for optomechanical structure. Under these conditions, Hamiltonian is considered in blue and red sideband regime. In these cases, the asymmetric coupling between two cavities has been transferred such that the asymmetric beam-splitter or squeezing interaction is generated between optical and mechanical modes. Then, the amount of entanglement between the different optical and mechanical modes is calculated. The results define that PT-symmetry can improve the entanglement in special conditions. The proposed system provides good condition to investigate the nonreciprocal interaction between photon and phonon. |
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Keywords: | Nonreciprocal transmission coupled optomechanical cavities entanglement state PT-symmetry non-Hermitian model asymmetry coupling |
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