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arXiv · 0706.0871

Experimental Realization of Quantum-Resonance Ratchets

I. Dana·V. Ramareddy·I. Talukdar·G. S. Summy
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Abstract

Quantum-resonance ratchets associated with the periodically kicked particle are experimentally realized for the first time. This is achieved by using a Bose-Einstein condensate exposed to a pulsed standing light wave and prepared in an initial state differing from the usual plane wave. Both the standing-wave potential and the initial state have a point symmetry around some center and the ratchet arises from the non-coincidence of the two centers. The dependence of the directed quantum transport on the quasimomentum is studied. A detailed theoretical analysis is used to explain the experimental results.

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I. Dana, V. Ramareddy, I. Talukdar, G. S. Summy. 2007-11-27. Experimental Realization of Quantum-Resonance Ratchets. https://doi.org/10.1103/physrevlett.100.024103

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