Near-Optimal Dynamical Decoupling of a Qubit
Jacob R. West, Bryan H. Fong, Daniel A. Lidar · Physical Review Letters · 2010
We present a near-optimal quantum dynamical decoupling scheme that eliminates general decoherence of a qubit to order n using O(n2) pulses, an exponential decrease in pulses over all previous decoupling methods. Numerical simulations of a qubit coupled to a spin bath demonstrate the superior performance of the new pulse sequences.