Optical pumping of single donor-bound electrons in zinc selenide and silicon
Abstract/Contents
- Abstract
- The spin of single electrons bound to donors in semiconductor materials are promising candidates for quantum bits implementations. These electrons have been shown to be very homogenous and have extremely long decoherence times in a bulk semiconductor environment. In this work, I have studied two donor systems as quantum bit candidates, with a focus on using optical pumping methods to initialize and measure the electron and nuclear spins of the donor system. The first donor system, fluorine in zinc selenide, is a very optically bright system which is a particularly good candidate for quantum repeater technologies. The relatively large electron binding energy leads to a stable qubit at low temperatures, and the potential for isotopic depletion of nuclear spin from the host semiconductor crystal suggests very long decoherence times can be achieved. In this work, I confirm the isolation of a single F-bound electron, and present results on the use of resonant optical pumping to initialize the electron to a particular spin state. These results open the door for optical control of the electron spin as a qubit. The second donor system, phosphorus in silicon, is the semiconductor system with the longest published decoherence times, obtained for the nuclear spin of the donor. Due to the long excited-state lifetime of the donor optical transitions, the linewidth of the transition is narrower than the hyperfine splitting, allowing optical access to the donor nuclear spin. However, to date, single phosphorus donors have not been optically isolated. In this work, I present a theoretical description of a hybrid optical and electrical device for the measurement of a single phosphorus donor nuclear spin. If experiments can confirm the properties of this device, this measurement technique would provide a key element for a silicon-based quantum computer.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2012 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Sleiter, Darin Jay |
|---|---|
| Associated with | Stanford University, Department of Physics |
| Primary advisor | Yamamoto, Yoshihisa |
| Thesis advisor | Yamamoto, Yoshihisa |
| Thesis advisor | Goldhaber-Gordon, David, 1972- |
| Thesis advisor | Vuckovic, Jelena |
| Advisor | Goldhaber-Gordon, David, 1972- |
| Advisor | Vuckovic, Jelena |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Darin Jay Sleiter. |
|---|---|
| Note | Submitted to the Department of Physics. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2012. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2012 by Darin Jay Sleiter
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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