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DC Field | Value | Language |
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dc.date.accessioned | 2021-04-15T06:50:52Z | - |
dc.date.available | 2021-04-15T06:50:52Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Sanavio, C. M. (2020). Topological transport and quantum estimation theory in optomechanical systems (Doctoral dissertation) | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/73722 | - |
dc.description | PH.D.PHYSICS | en_GB |
dc.description.abstract | This thesis focuses on optomechanics, which is the physical description of the force that the electromagnetic radiation exerts on a reflective object. The particles involved are so tiny that a quantum mechanical description is needed. Optomechanics is the median force between a quantum mechanical oscillator and a quanta of light. Hence, it has the potential to assume a major role in future technologies. Quantum transport has been extensively studied in the last few decades, and still offer an important substrate for emerging technologies. In this thesis we studied quantum transport and applied it to a one dimensional system of both bosonic and fermionic particles. We obtained quasi perfect many body transfer. One hurdle from obtaining perfect transfer is due to the opposite possible directions of propagation inside the system. A way to overcome this issue is offered by means of topological insulators, materials which allow unidirectional propagation. We aim to exploit optomechanics in order to transport excitations in a robust way. We engineered an array of microresonators which has the property of a topological insulator and where the mechanical motion spreads into the material in one way only. From an experimental point of view, the realization of this kind of mechanical topological insulator requires a good knowledge of the optomecanical coupling strength. Therefore we used quantum estimation theory to understand which is the best measurement that will lead to an optimal estimation of the optomechanical coupling constant. This will play an important role for cutting-edge technology and applications in communication, phonon-based information storage and signal-processing devices. | en_GB |
dc.language.iso | en | en_GB |
dc.rights | info:eu-repo/semantics/openAccess | en_GB |
dc.subject | Optomechanics | en_GB |
dc.subject | Quantum theory | en_GB |
dc.subject | Electromagnetic fields | en_GB |
dc.subject | Topological insulators | en_GB |
dc.subject | Many-body problem | en_GB |
dc.title | Topological transport and quantum estimation theory in optomechanical systems | en_GB |
dc.type | doctoralThesis | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. | en_GB |
dc.publisher.institution | University of Malta | en_GB |
dc.publisher.department | Faculty of Science. Department of Physics | en_GB |
dc.description.reviewed | N/A | en_GB |
dc.contributor.creator | Sanavio, Claudio Massimiliano (2020) | - |
Appears in Collections: | Dissertations - FacSci - 2020 Dissertations - FacSciPhy - 2020 |
Files in This Item:
File | Description | Size | Format | |
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20PHDPHY001.pdf | 7.17 MB | Adobe PDF | View/Open |
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