Controlling a group velocity of light by magnetic field

Details Controlling a group velocity of light by magnetic field Controlling a group velocity of light by magnetic field

2004-07-22

arxiv.org/abs/quant-ph/0407180v1

Physics

Quantum Physics

17 pages, 9 figure

Scientific paper

We have shown that quantum interference in a driven quasi-degenerate two-level atomic system can be controlled by an externally applied magnetic field. We demonstrate that the mechanism of optical control is based on quantum interference, which allows one to implement both electromagnetically induced transparency and electromagnetically induced absorption in one atomic system. Dispersion of such the medium allows one to control group velocity of propagation of light pulses be ultra-slow or superluminal via applied magnetic field.

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