title: Environment-mediated control of a quantum system.
abstract: Recently, a new approach for the controllability of a two-dimensional quantum system S has been proposed, based on its interaction with an initially uncorrelated two-dimensional probe P whose initial state can be arbitrarily modified. Following this scheme and considering a particular model for the environment, we show that, in some specific cases, the environment-induced entanglement is rich enough to completely control the dynamics of S. Under suitable conditions on the interaction of S, P, and the environment, we prove that the state of S can be driven to an arbitrary target state by varying the initial state of P.
authors.affiliation: Department of Mathematics, Iowa State University, Ames, Iowa 50011, USA. rromano@iastate.edu
authors.forename: Raffaele
authors.initials: R
authors.lastname: Romano
authors.forename: Domenico
authors.initials: D
authors.lastname: D'Alessandro