Multiple photon antibunching-to-bunching transitions in the dissipative anisotropic quantum Rabi model

• URL: http://arxiv.org/abs/2201.01917v1
• Date: Thu, 6 Jan 2022 04:33:41 GMT
• Title: Multiple photon antibunching-to-bunching transitions in the dissipative anisotropic quantum Rabi model
• Authors: Tian Ye, Chen Wang, and Qing-Hu Chen
• Abstract summary: We investigate the two-photon correlation function in the dissipative anisotropic quantum Rabi model. Multiple antibunching-to-bunching transitions are generally exhibited at the deep strong qubit-photon coupling.
• Score: 4.54325448000206
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We investigate the two-photon correlation function in the dissipative anisotropic quantum Rabi model in the framework of quantum dressed master equation. Multiple antibunching-to-bunching transitions are generally exhibited at the deep strong qubit-photon coupling. The emerged additional photon antibunching feature is however lacking in the dissipative isotropic quantum Rabi model. Importantly, the observed two-photon statistics can be well described analytically within a few lowest eigenstates at low temperatures. It is revealed that the additional photon antibunching effect is mainly originated from the selection rule of the two-photon correlation measurement induced eigenstate transitions and the enlarged energy gap of the first two eigenstates after the level crossings. Moreover, we unravel the implication of the photon bunching behavior with the first-order quantum phase transition. We hope these results may fertilize the analysis of the nonclassical photon radiation in the anisotropic qubit-photon hybrid systems.

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