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Quantum Optics in Coupled Quantum Dots

Garrido, Mauricio
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1273589966

Abstract Details

2010, Doctor of Philosophy (PhD), Ohio University, Physics and Astronomy (Arts and Sciences).
Coupled quantum dots present an active field of study, both at the fundamental and applied level, due to their atomic and molecular-like energy structure and the ability to design and tune their parameters. Being single-photon emitters, they are systems that behave fully according to the laws of quantum mechanics. The work presented here involved the experimental study of the electro-optical properties of Indium Arsenide, coupled quantum dots. Initial experiments involved the use of spectroscopic methods such as photoluminescence and photoluminescence excitation (PLE). Through such techniques, the top dot's hole energy level structure was mapped and different types of resonant absorption were identified. The characterization of these excited states and the knowledge of how to resonantly excite into them is an integral part of the development of certain controlled spin gates in quantum computation. Additionally, a shift of the spectra in the electric field was observed with varying excitation wavelength through and above the wetting layer, which allowed for direct measurement of the optically-created electric field within the device. This extends the quantum dots' capabilities to using them as electric-field nano-probes and opens up the possibility of an all-optical, fast switching mechanism. In the course of these studies, a novel data visualization method for PLE in this type of system was developed. Finally, to study correlated photon effects, a Hanbury Brown - Twiss experiment was built which revealed bunching and antibunching signals typical of quantum statistics in biexciton cascade emissions. This is an important step towards the experimental investigation of entangled states in coupled quantum dots.
Eric A. Stinaff, PhD (Advisor)
104 p.
Experiments; Optics; Physics; Technology
quantum optics; semiconductors; quantum dots; nanotechnology; excitons; photoluminescence; photoluminescence excitation; Hanbury Brown-Twiss experiments;

Recommended Citations

Citations

  • Garrido, M. (2010). Quantum Optics in Coupled Quantum Dots [Doctoral dissertation, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1273589966

    APA Style (7th edition)

  • Garrido, Mauricio. Quantum Optics in Coupled Quantum Dots. 2010. Ohio University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1273589966.

    MLA Style (8th edition)

  • Garrido, Mauricio. "Quantum Optics in Coupled Quantum Dots." Doctoral dissertation, Ohio University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1273589966

    Chicago Manual of Style (17th edition)

ohiou1273589966
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© 2010, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.