Conditional control of quantum beats in a cavity QED system

Details Conditional control of quantum beats in a cavity QED system Conditional control of quantum beats in a cavity QED system

2011-03-04

arxiv.org/abs/1103.0927v1

D G Norris et al 2011 J. Phys.: Conf. Ser. 274 012143

Physics

Quantum Physics

9 pages, 5 figures, XVII Reuni\'on Iberoamericana de \'Optica, X Encuentro de \'Optica, L\'aseres y Aplicaciones (RIAO-OPTILAS

Scientific paper

10.1088/1742-6596/274/1/012143

We probe a ground-state superposition that produces a quantum beat in the intensity correlation of a two-mode cavity QED system. We mix drive with scattered light from an atomic beam traversing the cavity, and effectively measure the interference between the drive and the light from the atom. When a photon escapes the cavity, and upon detection, it triggers our feedback which modulates the drive at the same beat frequency but opposite phase for a given time window. This results in a partial interruption of the beat oscillation in the correlation function, that then returns to oscillate.

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