Atomic Entanglement vs Photonic Visibility for Quantum Criticality of Hybrid System

Details Atomic Entanglement vs Photonic Visibility for Quantum Criticality of Hybrid System Atomic Entanglement vs Photonic Visibility for Quantum Criticality of Hybrid System

2007-02-08

arxiv.org/abs/quant-ph/0702078v2

Phys. Rev. A 77, 022103 (2008)

Physics

Quantum Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevA.77.022103

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.

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