Chen, Lei; Xiong, Chao; Xiao, Jin; Yuan, Hong-Chun - In: Physica A: Statistical Mechanics and its Applications 416 (2014) C, pp. 225-230
We investigate a time-asymmetric delta-kicked model for the quantum ratchet effect, in which a flashing potential acts on a particle at unequal time intervals. Ratchet currents emerge when quantum resonances are excited. The currents in time-asymmetric models may be stronger than those found in...