Dynamical Decoupling of Open Quantum Systems

Lorenza Viola; Emanuel Knill; Seth Lloyd

doi:10.1103/PhysRevLett.82.2417

Dynamical Decoupling of Open Quantum Systems

Lorenza Viola, Emanuel Knill, and Seth Lloyd

Phys. Rev. Lett. 82, 2417 – Published 22 March 1999

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.

Received 14 September 1998

DOI:https://doi.org/10.1103/PhysRevLett.82.2417

Authors & Affiliations

Lorenza Viola^1,*, Emanuel Knill^2,†, and Seth Lloyd^1,‡

¹d'Arbeloff Laboratory for Information Systems and Technology, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
²Los Alamos National Laboratory, Los Alamos, New Mexico 87545

^*Electronic address: vlorenza@mit.edu
^†Electronic address: knill@lanl.gov
^‡Electronic address: slloyd@mit.edu