Spatial and energetic mode dynamics of cold atomic systems

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dc.contributor.advisor Busch, Thomas
dc.contributor.author O'Sullivan, Brian
dc.date.accessioned 2013-02-14T13:56:46Z
dc.date.available 2013-02-14T13:56:46Z
dc.date.issued 2012-12
dc.date.submitted 2012-12
dc.identifier.citation O'Sullivan, Brian, 2012. Spatial and energetic mode dynamics of cold atomic systems. PhD Thesis, University College Cork. en
dc.identifier.uri http://hdl.handle.net/10468/963
dc.description.abstract In 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.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher University College Cork en
dc.relation.uri http://pra.aps.org/pdf/PRA/v79/i3/e033602
dc.relation.uri http://arxiv.org/abs/1001.1331v1
dc.relation.uri http://pra.aps.org/pdf/PRA/v83/i5/e053620
dc.rights © 2012, Brian O'Sullivan en
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/ en
dc.subject Spacial en
dc.subject Mode en
dc.subject Dynamics en
dc.subject Quantum tunnelling en
dc.subject.lcsh Quantum physics en
dc.title Spatial and energetic mode dynamics of cold atomic systems en
dc.type Doctoral thesis en
dc.type.qualificationlevel Doctoral en
dc.type.qualificationname PhD (Science) en
dc.internal.availability Full text available en
dc.description.version Accepted Version en
dc.contributor.funder Irish Research Council for Science Engineering and Technology en
dc.description.status Not peer reviewed en
dc.internal.school Physics en


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