Atomic Entanglement vs Photonic Visibility for Quantum Criticality of Hybrid System

Abstract

To characterize the novel quantum phase transition for a hybrid system consisting of an array of coupled cavities and two-level atoms doped in each cavity, we study the atomic entanglement and photonic visibility in comparison with the quantum fluctuation of total excitations. Analytical and numerical simulation results show the happen of quantum critical phenomenon similar to the Mott insulator to superfluid transition. Here, the contour lines respectively representing the atomic entanglement, photonic visibility and excitation variance in the phase diagram are consistent in the vicinity of the non-analytic locus of atomic concurrences.

arXiv comment4 pages, 2 figures

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• Steady state entanglement between hybrid light-matter qubits
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• Scattering and bound states of two polaritons in an array of coupled cavities
• Equilibrium and Disorder-induced behavior in Quantum Light-Matter Systems
• Stimulated photon emission and two-photon Raman scattering in a coupled-cavity QED system
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