Universal model of strong coupling at the nonlinear resonance in open cavity-QED systems
Universal model of strong coupling at the nonlinear resonance in open cavity-QED systems
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DOI：
10.1103/physreva.105.053707
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发表时间：
2021-12
影响因子：
2.9
通讯作者：
M. Tokman;M. Erukhimova;Qianfan Chen;A. Belyanin
中科院分区：
文献类型：
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作者：
M. Tokman;M. Erukhimova;Qianfan Chen;A. Belyanin
许多分子、量子点和光机械纳米腔-QED系统显示出电子、光子和声子(振动)模之间的强非线性相互作用。结果表明，在涉及所有三个自由度的非线性参数共振附近，这类系统可以用一个通用模型来描述。在非线性共振的强耦合区域，我们考虑了量子化、耗散和所有场的涨落，求解了非微扰量子动力学。在旋转波近似下，我们找到了量子态的解析解，一旦达到强耦合区域，就证明了三体量子纠缠。我们展示了在非线性共振处的强耦合如何改变光子发射和振动光谱，以及如何利用观察到的光谱来提取特定系统中的驰豫速率和非线性耦合强度的信息。
Many molecular, quantum-dot, and optomechanical nanocavity-QED systems demonstrate strong nonlinear interactions between electrons, photons, and phonon (vibrational) modes. We show that such systems can be described by a universal model in the vicinity of the nonlinear parametric resonance involving all three degrees of freedom. We solve the nonperturbative quantum dynamics in the strong coupling regime of the nonlinear resonance, taking into account quantization, dissipation, and fluctuations of all fields. We find analytic solutions for quantum states in the rotating wave approximation which demonstrate tripartite quantum entanglement once the strong coupling regime is reached. We show how the strong coupling at the nonlinear resonance modifies photon emission and vibrational spectra, and how the observed spectra can be used to extract information about relaxation rates and the nonlinear coupling strength in specific systems.