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Phys Rev Lett. 2008 Jul 04;101(1):010403. doi: 10.1103/PhysRevLett.101.010403. Epub 2008 Jul 03.

Optimal dynamical decoherence control of a qubit.

Physical review letters

Goren Gordon, Gershon Kurizki, Daniel A Lidar

Affiliations

  1. Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel.

PMID: 18764093 DOI: 10.1103/PhysRevLett.101.010403

Abstract

We present a theory of dynamical control by modulation for optimal decoherence reduction. The theory is based on the non-Markovian Euler-Lagrange equation for the energy-constrained field that minimizes the average dephasing rate of a qubit for any given dephasing spectrum.

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