Ratchet Effect in the Quantum Kicked Rotor and its Destruction by Dynamical Localization
Quantum Physics
2018-06-13 v2 Disordered Systems and Neural Networks
Quantum Gases
Abstract
We study experimentally a quantum kicked rotor with broken parity symmetry, supporting a ratchet effect due to the presence of a classical accelerator mode. We show that the short-time dynamics is very well described by the classical dynamics, characterized by a strongly asymmetric momentum distribution with directed motion on one side, and an anomalous diffusion on the other. At longer times, quantum effects lead to dynamical localization, causing an asymptotic resymmetrization of the wave function.
Keywords
Cite
@article{arxiv.1712.10192,
title = {Ratchet Effect in the Quantum Kicked Rotor and its Destruction by Dynamical Localization},
author = {Clément Hainaut and Adam Rançon and Jean-François Clément and Jean Claude Garreau and Pascal Szriftgiser and Radu Chicireanu and Dominique Delande},
journal= {arXiv preprint arXiv:1712.10192},
year = {2018}
}
Comments
v1: 5 pages, 3 figures; v2: published version, title, abstract and introduction changed