Controlled Dicke Subradiance from a Large Cloud of Two-Level Systems

Details Controlled Dicke Subradiance from a Large Cloud of Two-Level Systems Controlled Dicke Subradiance from a Large Cloud of Two-Level Systems

2012-01-11

arxiv.org/abs/1201.2274v1

Physical Review Letters 108, 123602 (2012)

Physics

Atomic Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.108.123602

Dicke superradiance has been observed in many systems and is based on constructive interferences between many scattered waves. The counterpart of this enhanced dynamics, subradiance, is a destructive interference effect leading to the partial trapping of light in the system. In contrast to the robust superradiance, subradiant states are fragile and spurious decoherence phenomena hitherto obstructed the observation of such metastable states. We show that a dilute cloud of cold atoms is an ideal system to look for subradiance in free space and study various mechanisms to control this subradiance.

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