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Title: Quantum Enhancement of Momentum Diffusion in the Delta-Kicked Rotor

Abstract

We present detailed observations of the quantum delta-kicked rotor in the vicinity of a quantum resonance. Our experiment consists of an ensemble of cold cesium atoms subject to a pulsed off-resonant standing wave of light. We measure the mean energy and show clearly that at the quantum resonance it is a local maximum. We also examine the effect of noise on the system and find that the greatest sensitivity to this occurs at the resonances. This makes these regions ideal for examining quantum-classical correspondence. A picture based on diffraction is developed which allows the experiments to be readily understood.

Authors:
; ; ; ;
Publication Date:
Sponsoring Org.:
(US)
OSTI Identifier:
40230969
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 87; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevLett.87.074102; Othernumber: PRLTAO000087000007074102000001; 034133PRL; PBD: 13 Aug 2001; Journal ID: ISSN 0031-9007
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOMS; CESIUM; DIFFRACTION; DIFFUSION; RESONANCE; ROTORS; SENSITIVITY; STANDING WAVES

Citation Formats

d'Arcy, M B, Godun, R M, Oberthaler, M K, Cassettari, D, and Summy, G S. Quantum Enhancement of Momentum Diffusion in the Delta-Kicked Rotor. United States: N. p., 2001. Web. doi:10.1103/PhysRevLett.87.074102.
d'Arcy, M B, Godun, R M, Oberthaler, M K, Cassettari, D, & Summy, G S. Quantum Enhancement of Momentum Diffusion in the Delta-Kicked Rotor. United States. doi:10.1103/PhysRevLett.87.074102.
d'Arcy, M B, Godun, R M, Oberthaler, M K, Cassettari, D, and Summy, G S. Mon . "Quantum Enhancement of Momentum Diffusion in the Delta-Kicked Rotor". United States. doi:10.1103/PhysRevLett.87.074102.
@article{osti_40230969,
title = {Quantum Enhancement of Momentum Diffusion in the Delta-Kicked Rotor},
author = {d'Arcy, M B and Godun, R M and Oberthaler, M K and Cassettari, D and Summy, G S},
abstractNote = {We present detailed observations of the quantum delta-kicked rotor in the vicinity of a quantum resonance. Our experiment consists of an ensemble of cold cesium atoms subject to a pulsed off-resonant standing wave of light. We measure the mean energy and show clearly that at the quantum resonance it is a local maximum. We also examine the effect of noise on the system and find that the greatest sensitivity to this occurs at the resonances. This makes these regions ideal for examining quantum-classical correspondence. A picture based on diffraction is developed which allows the experiments to be readily understood.},
doi = {10.1103/PhysRevLett.87.074102},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 7,
volume = 87,
place = {United States},
year = {2001},
month = {8}
}