论文标题
识别量子狂犬模型中未结合的强束和旋转波近似的分解
Identifying unbound strong bunching and the breakdown of the Rotating Wave Approximation in the quantum Rabi model
论文作者
论文摘要
我们使用最近派生的量规不变的公式，对耦合到光腔的两级系统的问题，探索弱弱和超强相互作用的超强耦合方案之间的过渡。我们使用强度相关性探索了这一转变，$ g^{（2）}（τ）$的发光光，并找到由Rabi Hamiltonian控制的系统的强，无界的束。令人惊讶的是，这种效果不仅在超强的耦合方面观察到，而且在弱耦合系统中也观察到了这种效果，在该系统中，Jaynes-Cummings Hamiltonian可以预测相反的抗抗发射。这表明高阶相关性是Jaynes-Cummings和Rabi Hamiltonians之间差异的特别敏感探针，并且可以作为旋转波近似分解的指标。我们的发现还表明，弱，强和超严重的耦合动力学之间的边界比目前接受的要丰富得多。
We use a recently derived gauge-invariant formulation of the problem of a two-level system coupled to an optical cavity, to explore the transition between the weak, and the ultra-strong coupling regimes of light-matter interaction. We explore this transition using the intensity correlations $g^{(2)}(τ)$ of the emitted light, and find strong, unbounded bunching of the emission from systems governed by the Rabi Hamiltonian. Surprisingly, this effect is observed not only in the ultra-strong coupling regime, but also for weakly coupled systems, where the Jaynes-Cummings Hamiltonian would predict the opposite, antibunched emission. This suggests that the higher-order correlations are a particularly sensitive probe of the divergence between the Jaynes-Cummings and Rabi Hamiltonians, and can serve as an indicator of the breakdown of the rotating wave approximation. Our findings indicate also that the boundary between the weakly, strongly, and ultra-strongly coupled dynamics, is much richer than currently accepted.
