Non-perturbative Dynamical Decoupling Control and Threshold

Details Non-perturbative Dynamical Decoupling Control and Threshold Non-perturbative Dynamical Decoupling Control and Threshold

2012-02-22

arxiv.org/abs/1202.5056v1

Physics

Quantum Physics

5 pages, 5 figures

Scientific paper

Protection of quantum states in a noisy environment is essential for reliable quantum information processing. In this Letter, through a sequence of unoptimized periodical rectangular pulses we show that beyond perturbation, dynamical decoupling can be a powerful tool for the control of fidelity and entanglement of the open system in a non-Markovian bath. With this non-perturbative approach, we have found, for the first time, the threshold and pulse parameter regions in which the non-idealized pulses are effective in controlling quantum coherence.

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