Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
975701 | Physica A: Statistical Mechanics and its Applications | 2014 | 6 Pages |
Abstract
•A delta-kicked model is proposed for the quantum ratchet effect.•Two symmetrical flashing potentials alternately act on a particle.•Temporal symmetry is destroyed while spatial symmetry is preserved in our model.•Ratchet currents emerge when quantum resonances are excited.•Some characteristics of our model are investigated.
We construct a delta-kicked model for the quantum ratchet effect. Two symmetric flashing potentials alternately act on a particle with a symmetric and homogeneous initial state of zero momentum. Ratchet currents emerge when quantum resonances are excited. We give some results and compare our model and a previous model. Our work provides a way to control the quantum transport of cold atoms experimentally.
Keywords
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Lei Chen, Chao Xiong, Hong-Chun Yuan, Li-Hua Ding,