Enhanced Optical and Electric Manipulation of a Quantum Gas of Krb Molecules - Couverture rigide

Covey, Jacob P.

Couverture rigide

ISBN 10 : 3319981064 ISBN 13 : 9783319981062

Editeur : Springer International Publishing AG, 2018

Synopsis

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.

A propos du livre

À propos de l'auteur

Jacob Covey received his PhD in 2017 for research undertaken at JILA, the University of Colorado, Boulder, and NIST. He holds a postdoctoral research position at Caltech.

Détails de l'édition

• Éditeur: Springer International Publishing AG
• Date d'édition: 2018
• Langue: anglais
• ISBN 10: 3319981064
• ISBN 13: 9783319981062
• Reliure: Relié
• Nombre de pages: 265
• Coordonnées du fabricant: Springer Nature Customer Service Center GmbH; ProductSafety@springernature.com; ; Europaplatz 3; Heidelberg; 69115; Allemagne