04800nam 22006015 450 991030056030332120200706025409.03-319-98107-210.1007/978-3-319-98107-9(CKB)4100000006996095(MiAaPQ)EBC5530932(DE-He213)978-3-319-98107-9(PPN)231462190(EXLCZ)99410000000699609520181001d2018 u| 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierEnhanced Optical and Electric Manipulation of a Quantum Gas of KRb Molecules[electronic resource] /by Jacob P. Covey1st ed. 2018.Cham :Springer International Publishing :Imprint: Springer,2018.1 online resource (257 pages)Springer Theses, Recognizing Outstanding Ph.D. Research,2190-50533-319-98106-4 Chapter1. Introduction -- Chapter2. Experimental Background and Overview -- Chapter 3. Quantum-State Controlled Chemical Reactions and Dipolar Collisions -- Chapter 4. Suppression of Chemical Reactions in a 3D Lattice -- Chapter 5. Quantum Magnetism with Polar Molecules in a 3D Optical Lattice -- Chapter 6. A Low Entropy Quantum Gas of Polar Molecules in a 3D Optical Lattice -- Chapter 7. The New Apparatus – Enhanced Optical and Electric Manipulation of Ultracold Polar Molecules -- Chapter 8. Designing, Building and Testing the New Apparatus -- Chapter 9. Experimental Procedure – Making Molecules in the New Apparatus -- Chapter 10. New Physics with the New Apparatus – High Resolution Optical Detection and Large, Stable Electric Fields -- Chapter 11. Outlook.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.Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Phase transformations (Statistical physics)Condensed materialsAtomsPhysicsLow temperature physicsLow temperaturesQuantum Gases and Condensateshttps://scigraph.springernature.com/ontologies/product-market-codes/P24033Atoms and Molecules in Strong Fields, Laser Matter Interactionhttps://scigraph.springernature.com/ontologies/product-market-codes/P24025Low Temperature Physicshttps://scigraph.springernature.com/ontologies/product-market-codes/P25130Phase transformations (Statistical physics).Condensed materials.Atoms.Physics.Low temperature physics.Low temperatures.Quantum Gases and Condensates.Atoms and Molecules in Strong Fields, Laser Matter Interaction.Low Temperature Physics.530.12Covey Jacob Pauthttp://id.loc.gov/vocabulary/relators/aut833987BOOK9910300560303321Enhanced Optical and Electric Manipulation of a Quantum Gas of KRb Molecules1864517UNINA