arXiv:quant-ph/0603107

Spontaneously generated coherence induced second-order susceptibility in atomic gases

Yueping Niu, Shangqing Gong

Published Mar 12, 2006• 0 citations

Abstract

The second-order susceptibility which vanishes in the electric-dipole approximation for an atom is induced by the spontaneously generated coherence. The spontaneously generated coherence considered in a lambda-type atomic system causes an indirect coupling between the lower two levels which acts equivalently as a DC-field and therefore makes possible the existence of second-order susceptibility.

DOI: 10.48550/arxiv.quant-ph/0603107

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