National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11474119]
机构署名：
本校为第一且通讯机构
院系归属：
物理科学与技术学院
摘要：
We examine conditions under which an open quantum system composed of a driven degenerated parametric oscillator cavity and a driven two-level atom coupled to a waveguide could decay to a pure dark state rather than the expected mixed state. The calculations are carried out analytically in a low-dimensional Hilbert space truncated at the double-excitation states of the combined system. The validity of the truncation is confirmed by the exact numerical analysis. It is found that one way to produce the pure state is to chirally couple the cavity and the atom to the waveguide. Another way to produ...
