Soft-pulse dynamical decoupling with Markovian decoherence
Soft-pulse dynamical decoupling with Markovian decoherence
We consider the effect of broadband decoherence on the performance of refocusing sequences, having in mind applications of dynamical decoupling in concatenation with quantum error correcting codes as the first stage of coherence protection. Specifically, we construct cumulant expansions of effective decoherence operators for a qubit driven by a pulse …