Suppression of decoherence effects in the quantum kicked rotor
arXiv:1004.2562 · doi:10.1103/PhysRevA.81.062132
Abstract
We describe a method allowing transient suppression of decoherence effects on the atom-optics realization of the kicked rotor. The system is prepared in an initial state with a momentum distribution concentrated in an interval much sharper than the Brillouin zone; the measure of the momentum distribution is restricted to this interval of quasimomenta: As most of the atoms undergoing decoherence processes fall outside this detection range and thus are not detected, the measured signal is effectively decoherence-free.
5 pages, 4 figures, revtex 4, submitted to PRL