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Books > Science & Mathematics > Physics > States of matter > Plasma physics
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Enhanced Optical and Electric Manipulation of a Quantum Gas of KRb Molecules (Hardcover, 1st ed. 2018)
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Enhanced Optical and Electric Manipulation of a Quantum Gas of KRb Molecules (Hardcover, 1st ed. 2018)
Series: Springer Theses
Expected to ship within 10 - 15 working days
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This thesis describes significant advances in experimental
capabilities using ultracold polar molecules. While ultracold polar
molecules are an idyllic platform for quantum chemistry and quantum
many-body physics, molecular samples prior to this work failed to
be quantum degenerate, were plagued by chemical reactions, and
lacked any evidence of many-body physics. These limitations were
overcome by loading molecules into an optical lattice to control
and eliminate collisions and hence chemical reactions. This led to
observations of many-body spin dynamics using rotational states as
a pseudo-spin, and the realization of quantum magnetism with
long-range interactions and strong many-body correlations. Further,
a 'quantum synthesis' technique based on atomic insulators allowed
the author to increase the filling fraction of the molecules in the
lattice to 30%, a substantial advance which corresponds to an
entropy-per-molecule entering the quantum degenerate regime and
surpasses the so-called percolations threshold where long-range
spin propagation is expected. Lastly, this work describes the
design, construction, testing, and implementation of a novel
apparatus for controlling polar molecules. It provides access to:
high-resolution molecular detection and addressing; large,
versatile static electric fields; and microwave-frequency electric
fields for driving rotational transitions with arbitrary
polarization. Further, the yield of molecules in this apparatus has
been demonstrated to exceed 10^5, which is a substantial
improvement beyond the prior apparatus, and an excellent starting
condition for direct evaporative cooling to quantum degeneracy.
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