The single‐photon excitation and transmission spectra of strong‐coupling hybrid optomechanics are theoretically analyzed, where a two‐level system (TLS) is coupled to a mechanical resonator (MR), generating Jaynes–Cummings‐type polariton doublets. In this model, both the optomechanical coupling and the TLS‐MR coupling are strong. In this parameter region, polaron‐assisted excitation reemission processes can strongly affect the single‐photon excitation and output spectra of the cavity. It is found that the fine structure around each sideband can be used to characterize the TLS‐MR and the effective TLS‐photon couplings, even at the single‐quantum level. Thus, the spectrum structures may make it possible to sensitively probe the quantum nature of a macroscopic mechanical element. A possible approach for tomographic reconstruction of the state of a TLS, utilizing the single‐photon transmission spectra, is further provided.

中文翻译：

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强耦合混合光机械系统中单光子散射的光谱

从理论上分析了强耦合混合光机的单光子激发和透射谱，其中将两级系统（TLS）耦合到机械谐振器（MR），生成Jaynes-Cummings型极化子双峰。在此模型中，光机械耦合和TLS‐MR耦合都很强。在这个参数区域，极化子辅助激发的释放过程会强烈影响腔体的单光子激发和输出光谱。我们发现，即使在单量子级，每个边带周围的精细结构也可以用来表征TLS-MR和有效的TLS-光子耦合。因此，光谱结构可以使得可以灵敏地探测宏观机械元件的量子性质。