title: Physical Computing on a Versatile Setup for Ultra-cold Potassium
creator: Hans, Maurus
subject: ddc-530
subject: 530 Physics
description: This thesis reports on a setup for a quasi two-dimensional Bose-Einstein condensate of 39K, which is an isotope well suited for interaction tuning due to a broad magnetic Feshbach resonance, and presents the application of the setup to a specific type of physical computing.    The first part gives an overview of the experimental components to prepare a quasi two-dimensional condensate with a configurable shape. Particular focus is put on the control of the magnetic field for the adjustment of atomic interactions and the configurable potential, which is realized with a digital micromirror device. The imaging setup is presented in detail and a strategy for absorption imaging at high magnetic field is elaborated. This strategy is necessary to properly exploit the magnetic Feshbach resonance. It relies on a scheme for an approximately closed four level optical cycle.    The second part introduces an approach for the implementation of a shallow artificial neural network with a physical system. Subsequently, a specific implementation that utilizes a quasi one-dimensional Bose-Einstein condensate is presented. Regression and interpolation of a non-inear function are performed successfully as a proof-of-concept, and the results are compared for different experimental parameters.
date: 2022
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/32365/1/0_MainDissFinal.pdf
identifier: DOI:10.11588/heidok.00032365
identifier: urn:nbn:de:bsz:16-heidok-323654
identifier:   Hans, Maurus  (2022) Physical Computing on a Versatile Setup for Ultra-cold Potassium.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/32365/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng