A Protocol For Cooling and Controlling Composite Systems by Local Interactions
arXiv:0710.0302
Abstract
We discuss an explicit protocol which allows one to externally cool and control a composite system by operating on a small subset of it. The scheme permits to transfer arbitrary and unknown quantum states from a memory on the network ("upload access") as well as the inverse ("download access"). In particular it yields a method for cooling the system.
8 pages, 5 figures: in "Quantum Information and Many Body Quantum Systems", proceedings, M. Ericsson and S. Montangero (eds.), Pisa, Edizioni della Normale, p. 17 (2008)