The nonclassical feature of photons in the open finite-size Dicke model is investigated via the two-photon correlation function. The quantum dressed master equation combined with the extended coherent photonic states is applied to analyze the dissipative dynamics of both the photons and qubits. The antibunching to bunching transition of photons is clearly observed by tuning the qubit–photon coupling strength. The optimal qubit number is unraveled to enhance the two-photon correlation function. Moreover, the temperature bias of thermal baths induces significant two-photon bunching signature with deep strong qubit–photon interaction.

中文翻译：

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耗散有限尺寸狄克模型中非经典辐射的双光子统计

通过双光子相关函数研究了开放有限尺寸Dicke模型中光子的非经典特征。结合扩展相干光子态的量子打扮主方程被用于分析光子和量子位的耗散动力学。通过调节量子位-光子耦合强度，可以清楚地观察到光子的反聚束到聚束过渡。揭示最佳量子位数以增强双光子相关函数。此外，热浴的温度偏差会引起显着的双光子束签名，并具有很强的量子位-光子相互作用。