Phys. Rev. Lett. 82, 2417–2421 (1999)

Dynamical Decoupling of Open Quantum Systems

Abstract

References

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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

Received 14 September 1998; published in the issue dated 22 March 1999

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.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.82.2417

DOI:

10.1103/PhysRevLett.82.2417

PACS:

03.65.-w, 03.67.-a, 05.30.-d

^*Electronic address: vlorenza@mit.edu

^†Electronic address: knill@lanl.gov

^‡Electronic address: slloyd@mit.edu

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Phys. Rev. Lett. 82, 2417–2421 (1999)

Dynamical Decoupling of Open Quantum Systems