Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"ultracold gas"”.
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Interactions in an ultracold gas of Rydberg atoms
… range interactions <br>in a frozen Rydberg gas. The observed signatures are interactioninduced <br>line broadenings and a suppression of resonant Rydberg excitation. <br>The latter effect can be interpreted as the onset of a local dipole <br>blockade and can be exploited to perform quantum …
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An ultracold gas of dipolar fermionic ²³Na⁴⁰K molecules
In this thesis, I present my work on creating ultracold dipolar molecules of ²³Na⁴⁰K in the singlet rovibrational ground state. These fermionic molecules have a large permanent electric dipole moment of 2.72 Debye, and are chemically stable against inelastic dimer-dimer reactions. A quantum gas of …
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Development Of Theoretical And Computational Methods For Few-body Processes In Ultracold Quantum Gases
… to study two related three-body processes in ultracold quantum gases: three-body resonances and three-body recombination. Three-body recombination causes the ultracold gas to heat up and atoms to leave the trap where they are confined. Therefore, it is an undesirable effect in the process of …
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Color superconducting phase of cold dense quark matter
… for the crystalline phase may be tested in an ultracold gas of fermionic atoms, where a similar crystalline superfluid state can occur. If a layer of crystalline quark matter occurs inside of a compact star, it could pin rotational vortices, leading to observable pulsar glitches.
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Out-of-equilibrium dynamics in a tuneable homogeneous Bose gas
… dynamics in an interacting homogeneous Bose gas. We use the versatile platform of an ultracold gas of $^{39}$K, prepared in an optical box trap. The experiment features both tuneable interaction strengths and a homogeneous atomic density. We examine first a weakly interacting near-equilibrium …
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Ultracold ²³Na⁶Li molecules in the triplet ground state
… ²³Na⁶Li molecules from an initial mixture of ultracold ²³Na and ⁶Li. The production of quantum degenerate molecules with long-range dipolar interactions is a long-standing goal in low temperature physics. NaLi is a fermionic molecule with an electric dipole moment of 0.2 Debye and a magnetic …
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A next-generation apparatus for lithium optical lattice experiments
… the physics of the Fermi-Hubbard model, using ultracold Lithium atoms in an optical lattice. A major goal of the quantum simulation program is to observe phase transitions of the Hubbard model, into Néel antiferromagnetic phases and d-wave superfluid phases. Phase transitions are generally …
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Topological phenomena in ultracold atomic gases
… finding new ways to measure such consequences in ultracold atomic gas experiments. These experiments have significant advantages over the solid-state as ultracold atoms are controllable, tuneable and clean. They can also be used to investigate properties which are inaccessible in other quantum …
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Quantum behavior in mesoscopic systems
In this thesis I present the work done during my PhD. The Thesis is divided into two parts; in the first one I present the study of mesoscopic quantum systems whereas in the second one I address the problem of the definition of Markov regime for quantum system dynamics. The first work presented is …
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Topics in multi-component ultracold gases and gauge fields
… on three topics related to multi-component ultracold gases and gauge fields. The first topic that we discuss is artificial gauge fields in ultracold gases. Recently, methods to create artificial gauge fields coupled to neutral ultracold systems using a light-induced Berry's connection have …