Near-optimal dynamical decoupling of a qubit.
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.
West
Jacob R
JR
HRL Laboratories, LLC, 3011 Malibu Canyon Road, Malibu, California 90265, USA.
Fong
Bryan H
BH
Lidar
Daniel A
DA