Dynamical decoupling (DD) is perhaps the simplest and least resource-intensive error-
suppression strategy for improving quantum computer performance. Here we report on a …

Decoherence is the phenomenon of non-unitary dynamics that arises as a consequence of
coupling between a system and its environment. It has important harmful implications for …

Decoherence-free subspaces and subsystems (DFS) preserve quantum information by
encoding it into symmetry-protected states unaffected by decoherence. An inherent DFS of a …

We study a string of neutral atoms with nearest neighbor interaction in a 1D beam splitter
configuration, where the longitudinal motion is controlled by a moving optical lattice …

“Leakage” errors are particularly serious errors which couple states within a code subspace
to states outside of that subspace, thus destroying the error protection benefit afforded by an …

XVI Preface transfer the properties of a quantum state or the possibility of a truly exponential
speed-up of quantum algorithms over classical algorithms. Apart from this, there are some …

Quantum error prevention strategies will be required to produce a scalable quantum
computing device and are of central importance in this regard. Progress in this area has …

A recently developed theory for eliminating decoherence and design constraints in quantum
computers,“encoded recoupling and decoupling,” is shown to be fully compatible with a …

Quantum error-correcting codes (QECCs) and decoherence-free subspace (DFS) codes
provide active and passive means, respectively, to address certain types of errors that arise …

We present a scalable scheme to design optimized soft pulses and pulse sequences for
coherent control of interacting quantum many-body systems. The scheme is based on the …