The role of quasi-momentum in the resonant dynamics of the atom-optics kicked rotor
arXiv:physics/0505143 · doi:10.1088/0305-4470/38/49/007
Abstract
We examine the effect of the initial atomic momentum distribution on the dynamics of the atom-optical realisation of the quantum kicked rotor. The atoms are kicked by a pulsed optical lattice, the periodicity of which implies that quasi-momentum is conserved in the transport problem. We study and compare experimentally and theoretically two resonant limits of the kicked rotor: in the vicinity of the quantum resonances and in the semiclassical limit of vanishing kicking period. It is found that for the same experimental distribution of quasi-momenta, significant deviations from the kicked rotor model are induced close to quantum resonance, while close to the classical resonance (i.e. for small kicking period) the effect of the quasi-momentum vanishes.
10 pages, 4 figures, to be published in J. Phys. A, Special Issue on 'Trends in Quantum Chaotic Scattering'
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Cited by in corpus (8)
- Chaotic ratchet dynamics with cold atoms in a pair of pulsed optical lattices
- Initial state dependence of a quantum-resonance ratchet
- Phase Noise in the Delta Kicked Rotor: From Quantum to Classical
- The manifestation of quantum resonances and antiresonances in a finite temperature dilute atomic gas
- Pseudo-classical theory for fidelity of nearly resonant quantum rotors
- Power-law behavior in the quantum-resonant evolution of the delta-kicked accelerator
- Fractional resonances in the atom-optical delta-kicked accelerator
- Enhancing Quantum Metrology by Quantum Resonance Dynamics