Dynamical localization, measurements and quantum computing

Abstract

We study numerically the effects of measurements on dynamical localization in the kicked rotator model simulated on a quantum computer. Contrary to the previous studies, which showed that measurements induce a diffusive probability spreading, our results demonstrate that localization can be preserved for repeated single-qubit measurements. We detect a transition from a localized to a delocalized phase, depending on the system parameters and on the choice of the measured qubit.Comment: 4 pages, 4 figures, research at Quantware MIPS Center http://www.quantware.ups-tlse.f