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The exact dynamics of a disordered spin star system, describing a central spin coupled to N distinguishable and non interacting spins , is reported. Exploiting their interaction with the central single spin system, we present possible conditional schemes for the generation of W-like states, as well as of well-defined angular momentum states, of the N uncoupled spins. We provide in addition a way to estimate the coupling intensity between each of the N spins and the central one. Finally the feasibility of our procedure is briefly discussed.
EDP Sciences
Publication date: 
1 Jul 2008

ELENA Ferraro, A Napoli, MA Jivulescu, A Messina

Biblio References: 
Volume: 160 Issue: 1 Pages: 157-164
The European Physical Journal Special Topics