论文标题
非平衡级子的浮雕工程
Floquet Engineering of Non-Equilibrium Superradiance
论文作者
论文摘要
我们证明了在耗散性狂犬模型模型中非平衡超级阶段的出现。该阶段的特征在于光子稳态，该光子稳态以接近空腔频率的频率振荡，与DICKE模型中平衡级别级别的恒定光子稳态相反。我们通过在腔体中引入了驱动的两级系统的施温格表示，将这个上级阶段与浮雕状态的种群反转联系起来。这种反转在浮子能量附近耗尽，这些能量与空腔频率共振，以维持连贯的光场。特别是，我们的模型适用于两个波段近似中的固体，其中电子充当schwinger fermions。我们建议使用此Floquet辅助级别相位，以获得类似激光的操作的可控光学增益。
We demonstrate the emergence of a non-equilibrium superradiant phase in the dissipative Rabi-Dicke model. This phase is characterized by a photonic steady state that oscillates with a frequency close to the cavity frequency, in contrast to the constant photonic steady state of the equilibrium superradiant phase in the Dicke model. We relate this superradiant phase to the population inversion of Floquet states by introducing a Schwinger representation of the driven two-level systems in the cavity. This inversion is depleted near Floquet energies that are resonant with the cavity frequency to sustain a coherent light-field. In particular, our model applies to solids within a two-band approximation, in which the electrons act as Schwinger fermions. We propose to use this Floquet-assisted superradiant phase to obtain controllable optical gain for a laser-like operation.
