Dynamical decoupling for a qubit in telegraph-like noises

Details Dynamical decoupling for a qubit in telegraph-like noises Dynamical decoupling for a qubit in telegraph-like noises

2010-09-06

arxiv.org/abs/1009.0984v1

Phys. Rev. A, 82, 052324 (2010)

Physics

Quantum Physics

4 pages

Scientific paper

10.1103/PhysRevA.82.052324

Based on the stochastic theory developed by Kubo and Anderson, we present an exact result of the decoherence function of a qubit in telegraph-like noises under dynamical decoupling control. We prove that for telegraph-like noises, the decoherence can be suppressed at most to the third order of the time and the periodic Carr-Purcell-Merboom-Gill sequences are the most efficient scheme in protecting the qubit coherence in the short-time limit.

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