Abstract
Under the cross-Kerr effect, we investigate two different forms of quantum correlations in an optomechanical system consisting of a mechanical mode coupled with an optical mode. For this, we use the logarithmic negativity to quantify entanglement, while the Gaussian quantum discord is employed to quantify nonclassical correlations beyond entanglement. We show that the entanglement as well as the Gaussian discord between the optical and mechanical modes can be more enhanced with the introduction of the cross-Kerr coupling. The effects of other parameters are discussed in detail.
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Aoune, D., Habiballah, N. Quantifying of Quantum Correlations in an Optomechanical System with Cross-Kerr Interaction. J Russ Laser Res 43, 406–415 (2022). https://doi.org/10.1007/s10946-022-10065-y
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DOI: https://doi.org/10.1007/s10946-022-10065-y