ac-driven atomic quantum motor

Details ac-driven atomic quantum motor ac-driven atomic quantum motor

2009-02-03

arxiv.org/abs/0902.0489v3

Phys. Rev. Lett. 102, 230601 (2009)

Physics

Atomic Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.102.230601

We invent an ac-driven quantum motor consisting of two different, interacting ultracold atoms placed into a ring-shaped optical lattice and submerged in a pulsating magnetic field. While the first atom carries a current, the second one serves as a quantum starter. For fixed zero-momentum initial conditions the asymptotic carrier velocity converges to a unique non-zero value. We also demonstrate that this quantum motor performs work against a constant load.

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