Enhancement of interferometric precision using fast light

Details Enhancement of interferometric precision using fast light Enhancement of interferometric precision using fast light

2005-07-14

arxiv.org/abs/quant-ph/0507139v1

Physics

Quantum Physics

15 pages, 4 figures. submitted

Scientific paper

We show that anomalous dispersion characteristic of fast-light can be used to enhance the sensitivity of optical interferometry under certain conditions. In particular, we show that a dual-chamber Fabry-Perot interferometer with a shared mirror-pair can be used in a way so that its sensitivity is increased by operating near the critically anomalous dispersion condition where the group index is much less than unity. The enhancement factor can be as high as 108 for realistic conditions. The process of bi-frequency pumped Raman gain in a lambda-type atomic medium can be used to achieve this effect.

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