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Abstract: We invent an ac-driven quantum motor consisting of two different, interactingultracold atoms placed into a ring-shaped optical lattice and submerged in apulsating magnetic field. While the first atom carries a current, the secondone serves as a quantum starter. For fixed zero-momentum initial conditions theasymptotic carrier velocity converges to a unique non-zero value. We alsodemonstrate that this quantum motor performs work against a constant load.

Author: A. V. Ponomarev, S. Denisov, P. Hanggi


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