Deterministic instabilities in the magneto-optical trap

Details Deterministic instabilities in the magneto-optical trap Deterministic instabilities in the magneto-optical trap

2003-06-12

arxiv.org/abs/physics/0306095v1

Physics

Atomic Physics

Scientific paper

10.1140/epjd/e2004-00089-y

The cloud of cold atoms obtained from a magneto-optical trap is known to exhibit two types of instabilities in the regime of high atomic densities: stochastic instabilities and deterministic instabilities. In the present paper, the experimentally observed deterministic dynamics is described extensively. Three different behaviors are distinguished. All are cyclic, but not necessarily periodic. Indeed, some instabilities exhibit a cyclic behavior with an erratic return time. A one-dimensional stochastic model taking into account the shadow effect is shown to be able to reproduce the experimental behavior, linking the instabilities to a several bifurcations. Erraticity of some of the regimes is shown to be induced by noise.

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