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Quantum Computation with Neutral Atoms at Addressable Optical Lattice Sites and Atoms in Confined Geometries
Final rept. 1 Aug 2006-28 Feb 2013
PENNSYLVANIA STATE UNIV STATE COLLEGE
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We have performed a set of experiments using arrays of 1D Bose gases in various configurations. Uncoupled 1D gases have been used to study the limits of statistical mechanics near integrable points. We have shown that nearly integrable gases thermalize at an even slower rate than quantum statistical mechanics predicts, evidence of a long sought quantum KAM regime. With coupled tubes, we studied how correlations inhibit tunneling. With uncoupled tubes plus an axial lattice we have studied non-equilibrium dynamics after a quantum quench. The basic dynamics, which include doublon dissolution, quantum distillation, and confinement of vacancies in a doublon sea, can be qualitatively understood even in the intermediate coupling limit where exact theoretical calculations are difficult. We also worked, in a separate apparatus, on the development of a neutral atom quantum computer. We have recently gotten to the point of being able to execute arbitrary single qubit gates on any site in a 5x5x5 array.
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