Gain Components in Autler-Townes Doublet from Quantum Interferences in Decay Channels

Details Gain Components in Autler-Townes Doublet from Quantum Interferences in Decay Channels Gain Components in Autler-Townes Doublet from Quantum Interferences in Decay Channels

1999-08-16

arxiv.org/abs/quant-ph/9908055v1

Physics

Quantum Physics

Total 8 pages, 6 figures, submitted to Physical Review A

Scientific paper

10.1103/PhysRevA.61.013807

We consider non-degenerate pump-probe spectroscopy of V-systems under conditions such that interference among decay channels is important. We demonstrate how this interference can result in new gain features instead of the usual absorption features. We relate this gain to the existence of a new vacuum induced quasi-trapped-state. We further show how this also results in large refractive index with low absorption.

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