Universal dynamical decoherence control of noisy single-and multi-qubit systems

Abstract

In this article we develop, step by step, the framework for universal dynamical control of two-level systems (TLS) or qubits experiencing amplitude- or phase-noise (AN or PN) due to coupling to a thermal bath. A comprehensive arsenal of modulation schemes is introduced and applied to either AN or PN, resulting in completely analogous formulae for the decoherence rates, thus underscoring the unified nature of this universal formalism. We then address the extension of this formalism to multipartite decoherence control, where symmetries are exploited to overcome decoherence.

28 pages, 4 figures

References in corpus (4)

• Finite-Time Disentanglement via Spontaneous Emission
• Experimental demonstration of entanglement-enhanced classical communication over a quantum channel with correlated noise
• Optimal strategy for a single-qubit gate and trade-off between opposite types of decoherence
• Entangling capacities of noisy two-qubit Hamiltonians

Cited by in corpus (1)

• Optimal Dynamical Decoherence Control of a Qubit