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dc.contributor.advisorAndersen, Mikkel
dc.contributor.authorHobbs, Rhys
dc.date.available2020-03-05T00:47:47Z
dc.date.copyright2020
dc.identifier.citationHobbs, R. (2020). Deterministic Preparation of Individual Rubidium-85 Dimers via Photoassociation (Thesis, Master of Science). University of Otago. Retrieved from http://hdl.handle.net/10523/9940en
dc.identifier.urihttp://hdl.handle.net/10523/9940
dc.description.abstractIn this thesis, we present experimental methods and results for direct measurements of the photoassociation of two individual ultra-cold rubidium-85 atoms, each prepared in the |F = 2,m_F = −2⟩ ground state. From there two individual rubidium-85 atoms are loaded into separate far-off resonance optical tweezers which are near-deterministically prepared into |F = 2,m_F = −2⟩. The two optical tweezers are then merged and the atoms are exposed to photoassociation light. To ensure the correct frequency of photoassociation light is used a dual cavity locking scheme, capable of generating frequencies with a stability of ±425.7 kHz over a large wavelength range for use in photoassociation spectroscopy, was developed. From there, a light modulation technique is implemented to isolate the photoassociation event from unwanted far-off resonance trap effects, such as the AC Stark shift. By controlling the intensity, frequency, and duration parameters of the photoassociation pulses applied to the rubidium atoms, frequency-dependent, and time-dependent atom loss is observed for a single band of the 0^{+}_{u} series; located at 377.00067±0.00006 THz. The resonance and linewidth data exhibits the same behaviour as photoassociation performed on large atom ensembles within the many-body regime. However, two distinct fast and slow photoassociation rates are observed in contrast to the many-body regime where only a single photoassociation rate constant, K_{PA}, has been reported. This marks a novel physical process which heretofore has not been reported in the field of atomic or molecular physics.
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherUniversity of Otago
dc.rightsAll items in OUR Archive are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectRubidium-85
dc.subjectPhotoassociation
dc.subjectDimers
dc.subjectAtomic Physics
dc.subjectMolecular Physics
dc.subjectMolecular Chemistry
dc.subjectUniversity of Otago
dc.titleDeterministic Preparation of Individual Rubidium-85 Dimers via Photoassociation
dc.typeThesis
dc.date.updated2020-03-04T07:49:01Z
dc.language.rfc3066en
thesis.degree.disciplinePhysics
thesis.degree.nameMaster of Science
thesis.degree.grantorUniversity of Otago
thesis.degree.levelMasters
otago.interloanno
otago.openaccessOpen
otago.evidence.presentYes
otago.abstractonly.term337d*
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