Slow group velocity and Cherenkov radiation

Details Slow group velocity and Cherenkov radiation Slow group velocity and Cherenkov radiation

2001-03-12

arxiv.org/abs/quant-ph/0103059v1

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.87.064801

We theoretically study the effect of ultraslow group velocities on the emission of Vavilov-Cherenkov radiation in a coherently driven medium. We show that in this case the aperture of the group cone on which the intensity of the radiation peaks is much smaller than that of the usual wave cone associated with the Cherenkov coherence condition. We show that such a singular behaviour may be observed in a coherently driven ultracold atomic gas.

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