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| VOLUME 88 | ISSUE 10 |
PAGE 752
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| Manifestation of Hamiltonian chaos in dissipative atomic transport in a standing-wave laser field
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V. Yu. Argonov, S. V. Prants
Laboratory of Nonlinear Dynamical Systems, Pacific Oceanological Institute of the RAS
690041 Vladivostok, Russia
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PACS: 05.45.Mt, 05.45.-a, 37.10.Vz
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Abstract
We simulate atomic ballistic transport in a standing-wave laser
field in the framework of a Monte Carlo stochastic wavefunction
approach in which the coherent Hamiltonian evolution is interrupted at
random times by spontaneous emission events. It is shown in numerical
experiments and confirmed analytically that the character of spatial and
momentum diffusion of spontaneously emitting atoms changes abruptly in the
atom-laser detuning regime where the deterministic Hamiltonian dynamics has
been shown to be chaotic. Thus, we find a manifestation of underlying
Hamiltonian chaos in the diffusive-like center-of-mass motion which can be
observed in real experiments.
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