Engineering solid-state platforms for quantum photonics
Abstract/Contents
- Abstract
- Essential to the development of hardware for optical quantum information processing is the integration of solid-state quantum emitters into low-loss photonics. Quantum emitters provide discrete energy levels, which can be used as qubit states and driven with photons. This light-matter interaction enables the generation, manipulation, and transmission of information. Photonic devices allow us to confine light at the nanoscale to enhance the interaction between local (quantum emitter) and flying (photon) qubits. In recent years, extensive research has been conducted to find quantum emitters with narrow linewidths, high quantum efficiencies, and long coherence times. Some of the most promising quantum emitters have been incorporated into photonic devices and have facilitated fundamental studies of light-matter interactions, the development of optical control schemes, and the generation of non-classical light. These works have mostly been confined to single devices with single quantum emitters and current efforts are directed at scaling to photonic circuits connecting arrays of quantum emitters. This endeavor further increases the requirements on quantum emitters, as they have to be generated with nanoscale precision and near-identical properties across the entire chip. Clever engineering of photonics can facilitate meeting these requirements. However, the development of low-loss photonic circuits remains a challenge of its own, as the most promising quantum emitters are hosted in materials non-standard in the photonics industry. The realization of quantum photonic circuits therefore requires the simultaneous development of quantum emitters and their corresponding photonics. In my thesis, I summarize our contributions to the development of quantum photonics. I discuss how we use semiconductor quantum dots strongly coupled to photonic cavities to demonstrate the coherent generation of indistinguishable, on-demand single photons, as well as multiple photons at a time. Such systems could be used as non-classical light sources for quantum communication and measurement-based quantum computation. However, scaling from single devices to large quantum circuits is challenging, due to the prohibitively large inhomogeneous broadening and random positioning of quantum dots. In contrast, color centers are atomic-scale defects, which can be generated in site-specific locations and exhibit much smaller inhomogeneous broadening than quantum dots. We have thus worked to develop color centers in diamond and 4H-silicon carbide and their host materials into scalable quantum photonic platforms. The host materials diamond and 4H-silicon carbide are new in the field of photonics and as such required us to develop novel fabrication protocols. Leveraging these fabrication techniques and inverse-design algorithms that account for fabrication constraints, we developed photonic platforms in diamond and 4H-silicon carbide for classical, nonlinear, and quantum optics
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2020; ©2020 |
| Publication date | 2020; 2020 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Dory, Constantin |
|---|---|
| Degree supervisor | Vuckovic, Jelena |
| Thesis advisor | Vuckovic, Jelena |
| Thesis advisor | Miller, D. A. B |
| Thesis advisor | Soh, H. Tom |
| Degree committee member | Miller, D. A. B |
| Degree committee member | Soh, H. Tom |
| Associated with | Stanford University, Department of Electrical Engineering. |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Constantin Dory |
|---|---|
| Note | Submitted to the Department of Electrical Engineering |
| Thesis | Thesis Ph.D. Stanford University 2020 |
| Location | electronic resource |
Access conditions
- Copyright
- © 2020 by Constantin Dory
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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