Applications of Atomic Ensembles for Photonic Quantum Information Processing and Fundamental Tests of Quantum Physics

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atmire.migration.oldid4996
dc.contributor.advisorSimon, Christoph
dc.contributor.authorKhazali, Mohammadsadegh
dc.contributor.committeememberSaffman, Mark
dc.contributor.committeememberBarclay, Paul
dc.contributor.committeememberHobill, David
dc.contributor.committeememberSafavi, Rei
dc.date.accessioned2016-09-29T15:43:06Z
dc.date.available2016-09-29T15:43:06Z
dc.date.issued2016
dc.date.submitted2016en
dc.description.abstractQuantum optics provides tools for the accurate control of light using atoms and also for manipulating atomic states using light. These techniques are being used for many applications, including quantum information processing and the generation of exotic quantum states. This thesis contains proposals for implementing a photonic quantum memory and a photon-photon gate, which are essential elements of photonic quantum information processing. Furthermore it proposes a scheme for the creation of many-body entangled states. First a proposal for a new quantum memory protocol, called the atomic frequency sweep quantum memory, is presented. A two-level polariton model is derived that explains the coherent storage and retrieval of light through the manipulation of the atomic resonance frequency. This is followed by a scheme for a deterministic photonic controlled-PHASE gate based on the strong interaction between two stationary collective Rydberg excitations in an atomic ensemble. Distortion effects caused by nonuniform interaction are quantified and compensation techniques for these effects are proposed. Finally a proposal is presented that uses Rydberg dressing for the generation of energy cat states in an atomic medium, i.e. superposition states of all the atoms being in the ground or excited state, where these two states are connected by an optical transition and thus have a significant difference in energy. Considering the fragility of the state, the effects of many different imperfections and decoherence sources are quantified. The resulting cat state would allow testing of energy decoherence models with greatly improved sensitivity.en_US
dc.identifier.citationKhazali, M. (2016). Applications of Atomic Ensembles for Photonic Quantum Information Processing and Fundamental Tests of Quantum Physics (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/24969en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/24969
dc.identifier.urihttp://hdl.handle.net/11023/3353
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectPhysics--Atomic
dc.subjectOptics
dc.subjectPhysics--Theory
dc.subject.classificationRydberg Atomsen_US
dc.subject.classificationCold Atomsen_US
dc.subject.classificationMany-body Entanglementen_US
dc.subject.classificationQuantum Informationen_US
dc.subject.classificationQuantum computationen_US
dc.subject.classificationSchrödinger Cat Stateen_US
dc.subject.classificationQuantum Memoryen_US
dc.subject.classificationPhotonic Gateen_US
dc.subject.classificationTwo Level Polariton Modelen_US
dc.subject.classificationEnergy Decoherenceen_US
dc.subject.classificationCollapse Modelsen_US
dc.titleApplications of Atomic Ensembles for Photonic Quantum Information Processing and Fundamental Tests of Quantum Physics
dc.typedoctoral thesis
thesis.degree.disciplinePhysics and Astronomy
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
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