Southwest Quantum Information and TechnologyTenth Annual Meeting, February 14-17, 2008
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All Abstracts | Poster Abstracts | Talk Abstracts | Tutorial Abstracts A Quantum Kicked Top with Cold Atomic SpinsSouma Chaudhury, University of Arizona (Session 4 : Friday from 17:30-18:00) Abstract. Complexity in classical as well as quantum physics arises through the coupling of multiple degrees of freedom. Recent theoretical studies have shown a connection between the dynamical rate of entanglement generation in a bipartite quantum system and the presence of chaos in the corresponding classical dynamics. In order to explore this and similar questions that lie at the boundary between quantum information science and quantum chaos we have developed a version of the quantum kicked top based on laser cooled atomic spins driven by a pulsed magnetic field and a rank 2 tensor light shift. Among the advantages offered by our system are the ability to prepare arbitrary initial spin states, the ability to precisely implement the desired non-linear dynamics, and the ability to accurately measure the entire spin density matrix and thus obtain accurate snapshots of the evolving quantum state. |