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Title: Quantum features in mesoscopic bosonic systems
Author: Carlisle, Andrew Alan William
ISNI:       0000 0004 6423 9264
Awarding Body: Queen's University Belfast
Current Institution: Queen's University Belfast
Date of Award: 2017
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We study the means and extent to which quantum features can persist on a scale between that of microscopic and macroscopic, the mesoscopic scale. We examine first the dynamics of quantum features during the sudden quench of two coupled harmonic oscillators in contact with a thermal bath and we uncover a clear functional relation between quantum characteristics and thermodynamic figures of merit We then turn our attention to the system of a movable mirror in an optical cavity and assess its potential to generate a macroscopically quantum superposition using a Wigner function based measure. We conclude that with present techniques and technology such a superposition is out of reach experimentally. Finally we consider the potential of photon-reduced-squeezed Fock states to approximate a superposition of coherent states large enough to be considered macroscopically quantum. Our conclusion is that this route is promising and could potentially lead to the production of a macroscopically quantum superposition with only small advancement in present technology and techniques.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available