ac-Driven Atomic Quantum Motor
Abstract
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.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 2009
- DOI:
- 10.1103/PhysRevLett.102.230601
- arXiv:
- arXiv:0902.0489
- Bibcode:
- 2009PhRvL.102w0601P
- Keywords:
-
- 05.60.-k;
- 37.10.Jk;
- 84.50.+d;
- Transport processes;
- Atoms in optical lattices;
- Electric motors;
- Physics - Atomic Physics;
- Condensed Matter - Other Condensed Matter;
- Quantum Physics
- E-Print:
- 4 pages, 4 figures