Quantum Control of Two-Qubit Entanglement Dissipation
arXiv:1109.1137 · doi:10.1007/s10946-011-9240-0
Abstract
We investigate quantum control of the dissipation of entanglement under environmental decoherence. We show by means of a simple two-qubit model that standard control methods - coherent or open-loop control - will not in general prevent entanglement loss. However, we propose a control method utilising a Wiseman-Milburn feedback/measurement control scheme which will effectively negate environmental entanglement dissipation.
11 pages,4 figures, minor correction