https://doi.org/10.1140/epjst/e2008-00719-6
W-like states of N uncoupled spins ½
1
CNISM and Dipartimento di Scienze Fisiche ed Astronomiche, Università di Palermo, via Archirafi 36, 90123 Palermo, Italy
2
Department of Mathematics, “Politehnica” University of Timişoara, P-ta Victoriei 2, 300006 Timişoara, Romania
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, Springer-Verlag, 2008
