Journal of Experimental and Theoretical Physics

, Volume 124, Issue 1, pp 10–17

Recovery time in quantum dynamics of wave packets

Atoms, Molecules, Optics

DOI: 10.1134/S1063776116130112

Cite this article as:
Strekalov, M.L. J. Exp. Theor. Phys. (2017) 124: 10. doi:10.1134/S1063776116130112

Abstract

A wave packet formed by a linear superposition of bound states with an arbitrary energy spectrum returns arbitrarily close to the initial state after a quite long time. A method in which quantum recovery times are calculated exactly is developed. In particular, an exact analytic expression is derived for the recovery time in the limiting case of a two-level system. In the general case, the reciprocal recovery time is proportional to the Gauss distribution that depends on two parameters (mean value and variance of the return probability). The dependence of the recovery time on the mean excitation level of the system is established. The recovery time is the longest for the maximal excitation level.

Copyright information

© Pleiades Publishing, Inc. 2017

Authors and Affiliations

  1. 1.Voevodskii Institute of Chemical Kinetics and Combustion, Siberian BranchRussian Academy of SciencesNovosibirskRussia