W-like states of N uncoupled spins 1/2

Details W-like states of N uncoupled spins 1/2 W-like states of N uncoupled spins 1/2

2008-01-22

arxiv.org/abs/0801.3391v1

The European Physical Journal Special Topics 160,157-164 (2008)

Physics

Quantum Physics

8 pages, 2 figures, accepted for publication in European Physical Journal Special Topics

Scientific paper

The exact dynamics of a disordered spin star system, describing a central spin coupled to N distinguishable and non interacting spins 1/2, 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.

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