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Abstract: We present a near-optimal quantum dynamical decoupling scheme that eliminatesgeneral decoherence of a qubit to order n using On^2 pulses, an exponentialdecrease in pulses over all previous decoupling methods. Numerical simulationsof a qubit coupled to a spin bath demonstrate the superior performance of thenew pulse sequences.



Author: Jacob R. West, Bryan H. Fong, Daniel A. Lidar

Source: https://arxiv.org/



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