Abstract
We investigate the dynamics of the microwave-frequency nonclassical correlations in a three-level -configuration artificial atom, which is realized by superconducting quantum circuits. The intensity–intensity correlation and intensity field are strongly dependent on the relative phase of the driven fields. It is found that two interference loops are formed in the dressed state picture at or π, which are responsible for the generation of nonclassical microwave photons. When the phase is changed into or , the temporal correlation functions exhibit different oscillating behaviors. The phase-sensitive nonclassical correlations of fluorescence photons may find practical application in the design of all-optical switches and quantum information processing.
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