Cavity quantum electrodynamics with quantum dots in microcavities

Leiden Repository

Cavity quantum electrodynamics with quantum dots in microcavities

Title: Cavity quantum electrodynamics with quantum dots in microcavities
Author: Gudat, Jan
Publisher: Department of Quantum Optics and Quantum Information, Leiden Institute of Physics (LION), Faculty of Science
Issue Date: 2012-06-19
Keywords: Quantum dots
Optical microcavities
Micropillar cavities
Cavity quantum electrodynamics
Abstract: This thesis presents a viable route towards the implementation of quantum computing utilizing quantum dots embedded in optical microcavities. Following the introduction of the big picture and long-term visionary goal, general concepts fundamental to this field of research are described: quantum dots and microcavities, forming the physical system explored; and cavity quantum electrodynamics, the theoretical language used to describe their interaction. The physical structure and the optical mode composition in oxide-apertured micropillar cavities is analyzed. Permanent tuning methods achieving polarization degenerate cavities resonant with a quantum dot transition are illustrated. Active positioning of single quantum dots is developed providing an accuracy suitable to measure the interaction between a quantum dot and a cavity in the strong coupling limit. The possibility to waveguide-couple photonic crystal cavities on the same sample is explored. A theoretical description of the quantum-dot confined electron dynamics is presented. Presented are ideas how a hybrid quantum system could serve for implementation of a controlled NOT gate, and therewith be the building block for a quantum computer, exploiting the weak coupling regime. A Bell-state analyzer is the second scheme that is discussed. Results from reflection spectroscopy measurements on single quantum dots in a micropillar cavity are presented.
Description: Promotor: D. Bouwmeester
With Summary in Dutch
Faculty: Faculteit der Wiskunde en Natuurwetenschappen
Citation: Gudat, J., 2012, Doctoral Thesis, Leiden University
Series/Report no.: Casimir PhD Series;2012-15
ISBN: 9789085931263
Sponsor: Marie Curie Program
Handle: http://hdl.handle.net/1887/19553
 

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application/pdf Title Pages_Contents 130.7Kb View/Open
application/pdf Chapter 1 1.767Mb View/Open
application/pdf Chapter 2 208.7Kb View/Open
application/pdf Chapter 3 3.072Mb View/Open
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application/pdf Appendix A 1.670Mb View/Open
application/pdf Appendix B 127.6Kb Under embargo
application/pdf Appendix C_Bibliography 229.5Kb View/Open
application/pdf Summary in English 111.6Kb View/Open
application/pdf Summary in Dutch 112.2Kb View/Open
application/pdf Publications 102.6Kb View/Open
application/pdf Acknowledgements_Curriculum Vitae 122.4Kb Under embargo
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