Creating nonclassical states of light from simple quantum systems together with classical resources is a challenging problem. We show that chiral emitters under a coherent drive can generate nonclassical photon states. By selecting a specific temporal mode, we derive a coupled master equation for the relevant mode and the chiral emitters. The emitted states are predominantly mixtures of few-photon-added coherent states, which are experimentally accessible and useful for quantum metrology.
Creating nonclassical states of light from simple quantum systems together with classical resources is a challenging problem. We show how chiral emitters under a coherent drive can generate nonclassical photon states. For our analysis, we select a specific temporal mode in the transmitted light field, resulting in a coupled master equation for the relevant mode and the chiral emitters. We characterize the mode's state by its Wigner function and show that the emission from the system predominantly produces mixtures of few-photon-added coherent states. We argue that these nonclassical states are experimentally accessible and show their application for quantum metrology.
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