Spatial and energetic mode dynamics of cold atomic systems

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dc.contributor.advisorBusch, Thomas
dc.contributor.authorO'Sullivan, Brian
dc.contributor.funderIrish Research Council for Science Engineering and Technologyen
dc.date.accessioned2013-02-14T13:56:46Z
dc.date.available2013-02-14T13:56:46Z
dc.date.issued2012-12
dc.date.submitted2012-12
dc.description.abstractIn this thesis we relate the formal description of various cold atomic systems in the energy eigenbasis, to the observable spatial mode dynamics. Herein the `spatial mode dynamics' refers to the direction of photon emission following the spontaneous emission of an excited fermion in the presence of a same species and spin ideal anisotropic Fermi sea in its internal ground state. Due to the Pauli principle, the presence of the ground state Fermi sea renders the phase space, anisotropic and only partially accessible, thereby a ecting the direction of photon emission following spontaneous emission. The spatial and energetic mode dynamics also refers to the quantum `tunneling' interaction between localised spatial modes, synonymous with double well type potentials. Here we relate the dynamics of the wavefunction in both the energetic and spatial representations. Using this approach we approximate the relationship between the spatial and energetic representations of a wavefunction spanning three spatial and energetic modes. This is extended to a process known as Spatial Adiabatic Passage, which is a technique to transport matter waves between localised spatial modes. This approach allows us to interpret the transport of matter waves as a signature of a geometric phase acquired by the one of the internal energy eigenstates of the system during the cyclical evolution. We further show that this geometric phase may be used to create spatial mode qubit and qutrit states.en
dc.description.statusNot peer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationO'Sullivan, Brian, 2012. Spatial and energetic mode dynamics of cold atomic systems. PhD Thesis, University College Cork.en
dc.identifier.urihttps://hdl.handle.net/10468/963
dc.language.isoenen
dc.publisherUniversity College Corken
dc.relation.urihttp://pra.aps.org/pdf/PRA/v79/i3/e033602
dc.relation.urihttp://arxiv.org/abs/1001.1331v1
dc.relation.urihttp://pra.aps.org/pdf/PRA/v83/i5/e053620
dc.rights© 2012, Brian O'Sullivanen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/en
dc.subjectSpacialen
dc.subjectModeen
dc.subjectDynamicsen
dc.subjectQuantum tunnellingen
dc.subject.lcshQuantum physicsen
dc.titleSpatial and energetic mode dynamics of cold atomic systemsen
dc.typeDoctoral thesisen
dc.type.qualificationlevelDoctoralen
dc.type.qualificationnamePhD (Science)en
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