Dynamical Decoupling of Open Quantum Systems

Abstract

We propose a novel dynamical method for beating decoherence and dissipation in open quantum systems. We demonstrate the possibility of filtering out the effects of unwanted (not necessarily known) system-environment interactions and show that the noise-suppression procedure can be combined with the capability of retaining control over the effective dynamical evolution of the open quantum system. Implications for quantum information processing are discussed.

4 pages, no figures; Plain ReVTeX. Final version to appear in Physical Review Letters