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Quantum tomography of the full hyperfine manifold of atomic spins via continuous measurement on an ensemble

Carlos Riofrio, University of New Mexico

(Session 3 : Friday from 9:45am-10:15am)

Abstract. Quantum state reconstruction techniques based on weak continuous measurement have the advantage of being fast, accurate, and almost non-perturbative. Moreover, they have been successfully implemented in experiments on large spin systems (PRL 97, 180403 (2006)). In this talk, we present a detailed review of the quantum tomographic algorithm developed by Silberfarb et al. (PRL 95, 030402 (2005)), and study its application to controlling large spin ensembles. In particular, we show reconstruction of states stored in the 16 dimensional ground-electronic hyperfine manifolds (F=3, F=4) of an ensemble of 133Cs atoms controlled by microwaves and radio-frequency magnetic fields and discuss our efforts in the undergoing experimental implementation.