Controlling the Ratchet Effect for Cold Atoms
arXiv:0708.3026 · doi:10.1103/PhysRevLett.100.044104
Abstract
Low-order quantum resonances manifested by directed currents have been realized with cold atoms. Here we show that by increasing the strength of an experimentally achievable delta-kicking ratchet potential, quantum resonances of a very high order may naturally emerge and can induce larger ratchet currents than low-order resonances, with the underlying classical limit being fully chaotic. The results offer a means of controlling quantum transport of cold atoms.
4 pages, 4 figures
References in corpus (7)
- Experimental Realization of Quantum-Resonance Ratchets
- Periodically driven Quantum Ratchets: Symmetries and Resonances
- Quantum ratchet effect for vortices
- Rectified momentum transport for a kicked Bose-Einstein Condensate
- A classical scaling theory of quantum resonances
- General Quantum Resonances of the Kicked Particle
- Dissipationless Directed Transport in Rocked Single-Band Quantum Dynamics