High-sensitivity Magnetometer Based on Index-Enhanced Media.

MO SCULLY, M FLEISCHHAUER

Physical Review Letters（1992）SCI 1区

MAX PLANCK INST QUANTUM OPT | TEXAS A&M UNIV SYST

Cited 423|Views10

Abstract

The large dispersion of a phase-coherent medium, at a point of vanishing absorption, is applied to interferometric measurements of detuning between atomic and radiation frequencies. It is shown that, under certain conditions, the interferometer quantum-limited operation is determined by vacuum-fluctuation shot noise while the noise introduced by the interaction of the probe field with the phase-coherent atoms can be made negligible. As a possible application, an optical magnetometer is analyzed whose sensitivity is shown to be potentially superior to the present state-of-the-art devices.

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