Quantum state transfer via invariant based shortcuts to adiabaticity

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dc.contributor.advisor Ruschhaupt, Andreas en
dc.contributor.author Kiely, Anthony
dc.date.accessioned 2017-04-12T08:56:27Z
dc.date.available 2017-04-12T08:56:27Z
dc.date.issued 2017
dc.date.submitted 2017
dc.identifier.citation Kiely, A. 2017. Quantum state transfer via invariant based shortcuts to adiabaticity. PhD Thesis, University College Cork. en
dc.identifier.endpage 200 en
dc.identifier.uri http://hdl.handle.net/10468/3877
dc.description.abstract Adiabatic processes in quantum mechanics are very useful to prepare and manipulate quantum states but have the drawback of requiring long operation times. Hence there is a long time for the system to interact with its environment which can lead to a loss of coherence of the final state. This decoherence is problematic for implementing future quantum technologies which require the state's quantum mechanical features. “Shortcuts to Adiabaticity"(STA) provides a toolbox of methods to improve on adiabatic processes. Using these methods one can derive alternative processes which work for much shorter times with perfect fidelity. Since adiabatic processes are ubiquitous in atomic, molecular and optical physics, there is a broad scope of application for STA. In this thesis, STA (especially those using Lewis-Riesenfeld invariants) are applied to a variety of quantum systems for the purpose of quantum state transfer. In particular I show that STA control schemes in two- and three-level systems can be optimised to be more stable against unwanted uncontrollable transitions than adiabatic methods with the same operation time. I also show that STA methods can be applied in a triple well ring system with complex tunnelling, in optical lattices for the purposes of generating a higher orbital state of neutral atoms and in Penning traps to quickly compress or expand the trapped ion wavefunction. Finally I also investigate the effect of classical Poisson white noise on adiabatic processes. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher University College Cork en
dc.rights © 2017, Anthony Kiely. en
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/ en
dc.subject Quantum physics en
dc.subject Quantum optics en
dc.subject Shortcuts to adiabaticity en
dc.title Quantum state transfer via invariant based shortcuts to adiabaticity en
dc.type Doctoral thesis en
dc.type.qualificationlevel Doctoral Degree (Structured) en
dc.type.qualificationname PhD (Science) en
dc.internal.availability Full text available en
dc.check.info No embargo required en
dc.description.version Accepted Version
dc.description.status Not peer reviewed en
dc.internal.school Physics en
dc.check.type No Embargo Required
dc.check.reason No embargo required en
dc.check.opt-out No en
dc.thesis.opt-out false
dc.check.embargoformat Not applicable en
ucc.workflow.supervisor aruschhaupt@ucc.ie
dc.internal.conferring Summer 2017 en

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