9901001v1

related topics
{time, wave, function}
{classical, space, random}
{wave, scattering, interference}
{cavity, atom, atoms}
{level, atom, field}
{cos, sin, state}
{state, states, coherent}

Quantum slow motion

M. Hug, G. J. Milburn

abstract: We simulate the center of mass motion of cold atoms in a standing, amplitude modulated, laser field as an example of a system that has a classical mixed phase-space. We show a simple model to explain the momentum distribution of the atoms taken after any distinct number of modulation cycles. The peaks corresponding to a classical resonance move towards smaller velocities in comparison to the velocities of the classical resonances. We explain this by showing that, for a wave packet on the classical resonances, we can replace the complicated dynamics in the quantum Liouville equation in phase-space by the classical dynamics in a modified potential. Therefore we can describe the quantum mechanical motion of a wave packet on a classical resonance by a purely classical motion.

oai_identifier:
oai:arXiv.org:quant-ph/9901001
categories:
quant-ph
arxiv_id:
quant-ph/9901001
created:
1999-01-01

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