Abstract
We investigate the power control behavior of odd-order multiwave mixing in an electromagnetically induced transparency window. We successfully obtain the evolution from pure enhancement (bright state), half-enhancement, and half-suppression, to pure suppression (dark state) in a four-wave mixing (FWM) channel. The correlations of two bright and two dark states of FWM are studied under four different kinds of power configurations. Moreover, the power-controlled quantum interference among multiple dark states is also studied in FWM and six-wave mixing channels. Such selective switching among multiple frequency channels could have potential applications in optical switching, optical communication, and quantum information processing.
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