LEADER 04752nam 22006015 450 001 9910300560303321 005 20200706025409.0 010 $a3-319-98107-2 024 7 $a10.1007/978-3-319-98107-9 035 $a(CKB)4100000006996095 035 $a(MiAaPQ)EBC5530932 035 $a(DE-He213)978-3-319-98107-9 035 $a(PPN)231462190 035 $a(EXLCZ)994100000006996095 100 $a20181001d2018 u| 0 101 0 $aeng 135 $aurcnu|||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aEnhanced Optical and Electric Manipulation of a Quantum Gas of KRb Molecules /$fby Jacob P. Covey 205 $a1st ed. 2018. 210 1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2018. 215 $a1 online resource (257 pages) 225 1 $aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 311 $a3-319-98106-4 327 $aChapter1. 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. 330 $aThis thesis describes significant advances in experimental capabilities using ultracold polar molecules. While ultracold polar molecules are an idyllic platform for quantum chemistry and quantum many-body physics, molecular samples prior to this work failed to be quantum degenerate, were plagued by chemical reactions, and lacked any evidence of many-body physics. These limitations were overcome by loading molecules into an optical lattice to control and eliminate collisions and hence chemical reactions. This led to observations of many-body spin dynamics using rotational states as a pseudo-spin, and the realization of quantum magnetism with long-range interactions and strong many-body correlations. Further, a 'quantum synthesis' technique based on atomic insulators allowed the author to increase the filling fraction of the molecules in the lattice to 30%, a substantial advance which corresponds to an entropy-per-molecule entering the quantum degenerate regime and surpasses the so-called percolations threshold where long-range spin propagation is expected. Lastly, this work describes the design, construction, testing, and implementation of a novel apparatus for controlling polar molecules. It provides access to: high-resolution molecular detection and addressing; large, versatile static electric fields; and microwave-frequency electric fields for driving rotational transitions with arbitrary polarization. Further, the yield of molecules in this apparatus has been demonstrated to exceed 10^5, which is a substantial improvement beyond the prior apparatus, and an excellent starting condition for direct evaporative cooling to quantum degeneracy. 410 0$aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 606 $aPhase transformations (Statistical physics) 606 $aCondensed matter 606 $aAtoms 606 $aPhysics 606 $aLow temperatures 606 $aLow temperatures 606 $aQuantum Gases and Condensates$3https://scigraph.springernature.com/ontologies/product-market-codes/P24033 606 $aAtoms and Molecules in Strong Fields, Laser Matter Interaction$3https://scigraph.springernature.com/ontologies/product-market-codes/P24025 606 $aLow Temperature Physics$3https://scigraph.springernature.com/ontologies/product-market-codes/P25130 615 0$aPhase transformations (Statistical physics) 615 0$aCondensed matter. 615 0$aAtoms. 615 0$aPhysics. 615 0$aLow temperatures. 615 0$aLow temperatures. 615 14$aQuantum Gases and Condensates. 615 24$aAtoms and Molecules in Strong Fields, Laser Matter Interaction. 615 24$aLow Temperature Physics. 676 $a530.12 700 $aCovey$b Jacob P$4aut$4http://id.loc.gov/vocabulary/relators/aut$0833987 906 $aBOOK 912 $a9910300560303321 996 $aEnhanced Optical and Electric Manipulation of a Quantum Gas of KRb Molecules$91864517 997 $aUNINA