ac-driven atomic quantum motor.
We propose 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 nonzero value. We also demonstrate that this quantum motor performs work against a constant load.
Ponomarev
A V
AV
Institute of Physics, University of Augsburg, Universitätstrasse 1, D-86159 Augsburg, Germany.
Denisov
S
S
Hänggi
P
P