Optical nonreciprocity of a five-level M-type atomic optical lattice in move

Dynamically controlled optical nonreciprocity of a double-ladder system with spontaneously generated coherence in moving atomic optical lattice

“…[19] In particular, some researches have shown that large optical nonreciprocity of transmission can be obtained by setting the photonic crystal [15] and exploiting the asymmetric Doppler shift in moving distributed atoms. [16,20,21] Optical nonreciprocity has the potential application in information processing, e.g., all-optical diodes [22,23] and unidirectional light transport. [24] So far, most studies on the optical nonreciprocity effect are based on the laser induced atomic coherence, [16,20,21] and it is necessary to have at least one coupling field to form the atom coherence.…”

“…[16,20,21] Optical nonreciprocity has the potential application in information processing, e.g., all-optical diodes [22,23] and unidirectional light transport. [24] So far, most studies on the optical nonreciprocity effect are based on the laser induced atomic coherence, [16,20,21] and it is necessary to have at least one coupling field to form the atom coherence. However, spontaneously generated coherence (SGC) can also create the atomic coherence, while SGC refers to the quantum interference between spontaneous decay channels from closely placed upper levels to a ground level.…”