Environment-mediated control of a quantum system.
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.
Romano
Raffaele
R
Department of Mathematics, Iowa State University, Ames, Iowa 50011, USA. rromano@iastate.edu
D'Alessandro
Domenico
D