Signatures of quantum stability in a classically chaotic system

Details Signatures of quantum stability in a classically chaotic system Signatures of quantum stability in a classically chaotic system

2002-07-18

arxiv.org/abs/physics/0207075v3

Phys. Rev. Lett. 90, 054101 (2003)

Physics

Atomic Physics

4 pages, 4 figures; substantial revision of previous version; submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.90.054101

We experimentally and numerically investigate the quantum accelerator mode dynamics of an atom optical realization of the quantum delta-kicked accelerator, whose classical dynamics are chaotic. Using a Ramsey-type experiment, we observe interference, demonstrating that quantum accelerator modes are formed coherently. We construct a link between the behavior of the evolution's fidelity and the phase space structure of a recently proposed pseudoclassical map, and thus account for the observed interference visibilities.

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