Control of state and state entanglement with a single auxiliary subsystem
R. Rossi, A.R. Bosco de Magalhães, J. G. Peixoto de Faria, M. Carolina Nemes · Physical Review A · 2009
We present a strategy to control the evolution of a quantum system using a single auxiliary subsystem. Two applications are given, one which allows for state preservation and another which controls the degree of entanglement of a given initial state.