Quantum ratchets in dissipative chaotic systems

Details Quantum ratchets in dissipative chaotic systems Quantum ratchets in dissipative chaotic systems

2004-07-27

arxiv.org/abs/cond-mat/0407702v2

Phys. Rev. Lett. 94, 164101 (2005)

Physics

Condensed Matter

Statistical Mechanics

Significant changes: Several text improvements and new results. Figure 2 modified. Figure 4 added

Scientific paper

10.1103/PhysRevLett.94.164101

Using the method of quantum trajectories we study a quantum chaotic dissipative ratchet appearing for particles in a pulsed asymmetric potential in the presence of a dissipative environment. The system is characterized by directed transport emerging from a quantum strange attractor. This model exhibits, in the limit of small effective Planck constant, a transition from quantum to classical behavior, in agreement with the correspondence principle. We also discuss parameter values suitable for implementation of the quantum ratchet effect with cold atoms in optical lattices.

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