Browsing Theses by Supervisor "Cory, David"
Now showing items 1-20 of 24
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Above Bandgap Hyperpolarization Mechanism in Isotopically Purified Silicon and Optimal Bayesian Experiment Design for $T_1$ Estimation
(University of Waterloo, 2018-05-24)This thesis is concerned with the mechanism underlying the above bandgap illumination Dynamic Nuclear Polarization (DNP) of phosphorus donors in isotopically purified silicon-28. Two proposed DNP models are introduced and ... -
Analysis of Light-Matter Systems
(University of Waterloo, 2022-01-18)In this thesis we introduce the simplest model of a two–level system coupled to a single mode of an optical cavity, called the Jaynes-Cummings model. This model is then extended to an ensemble of identical two-level systems ... -
Characterization of Langmuir-Blodgett Films by Electron Spin Resonance Spectroscopy
(University of Waterloo, 2020-01-15)Langmuir-Blodgett (LB) films built up with amphiphilic molecules have well-known optical, electrical and magnetic properties. For most applications, it is fundamentally important to understand the structure of the films. ... -
Closed-loop control system and hardware-aware compilation protocols for quantum simulation with neutral atoms in optical trap arrays
(University of Waterloo, 2023-09-25)Quantum materials offer tremendous potential for advancing electronic devices beyond traditional semiconductor-based technologies. Understanding the dynamics of these materials requires the use of quantum simulators. Quantum ... -
Collective Dynamics in NMR and Quantum Noise
(University of Waterloo, 2016-10-17)We introduced an open quantum system model to describe the statistical fluctuations of a spin ensemble in NMR. The model considers an ensemble measurement where the detection coil does not distinguish spins, and accounts ... -
Collective Spin-Cavity Ensembles and the Protection of Higher-dimensional Quantum Information
(University of Waterloo, 2022-09-28)The development of devices leveraging their quantum nature to outperform classical analogues has been an ongoing effort for many decades now. In this thesis we investigate two facets related to this effort, albeit at ... -
Computational and Theoretical Insights into Multi-Body Quantum Systems
(University of Waterloo, 2021-03-31)In generality, perfect predictions of the structure and dynamics of multi-body quantum systems are few and far between. As experimental design advances and becomes more refined, experimentally probing the interactions of ... -
Dynamics of Quantum Information of the Central Spin Problem
(University of Waterloo, 2018-01-17)Environmental effects on the evolution of a spin system in the context of the central spin problem, have been studied for more than 60 years. With the growing complexity of quantum information processors there is a new ... -
Emerging semiconductor nanostructure materials for single-photon avalanche diodes
(University of Waterloo, 2023-05-02)Detecting of light at the single photon level has a far-reaching impact that enables a broad range of applications. In sensing, advances in single-photon detection enable low light applications such as night-time operation, ... -
Engineering Effective Hamiltonians for Magnetic Resonance
(University of Waterloo, 2019-07-22)Effective Hamiltonian engineering is a powerful technique that utilises time-dependent perturbation theory to suppress or enhance certain effects that arise from otherwise weak Hamiltonian terms, when an experimenter ... -
Exploring Practical Methodologies for the Characterization and Control of Small Quantum Systems
(University of Waterloo, 2018-09-04)We explore methodologies for characterizing and controlling small quantum systems. We are interested in starting with a description of a quantum system, designing estimators for parameters of the system, developing robust ... -
The Fabrication and Characterization of a Superconducting Birdcage Resonator
(University of Waterloo, 2019-01-08)In this thesis we presents the fabrication and characterization of a superconducting Birdcage style radiofrequency (RF) coil, a commonly used coil design in nuclear magnetic resonance (NMR) spectrometers. The Birdcage was ... -
Field-Sweep Control in Magnetic Resonance and k-space Analysis
(University of Waterloo, 2019-10-30)In a general magnetic resonance experiment, resonant radiofrequency or microwave fields are applied to an ensemble of electron or nuclear spins to determine their magnetic interactions with their local environment. These ... -
Nuclear Spin Dynamics Under Above-Bandgap Optical Pumping in Silicon
(University of Waterloo, 2021-02-26)Phosphorus defects in silicon have been proposed as candidates for quantum information and quantum sensing applications, with proposals utilizing both the donor electron spin as well as the 31P nuclear spin. Initialization ... -
Optimal Control Theory Techniques for Nitrogen Vacancy Ensembles
(University of Waterloo, 2022-03-01)Nitrogen Vacancy (NV) centers have been used for many quantum sensing and navigation based applications. A diamond NV sensor with enhanced sensitivity through an ensemble measurement, and the ability to coherently and ... -
Overcoming synthesizer phase noise in quantum sensing
(University of Waterloo, 2019-04-23)Synthesizers are widely used in various quantum information platforms as microwave or radio frequency signal sources. The synthesizer phase noise plays a sensitive role in detecting spin dynamics which is similar to the ... -
Probing Surface Spin Interaction Dynamics using Nitrogen-Vacancy Center Quantum Sensors with High-Fidelity State-Selective Transition Control
(University of Waterloo, 2017-11-21)As a demand from developing nanotechnology and quantum information technology based on mesoscopic material, quantum sensors with better spatial resolution and sensitivity are required. However, few material meets the ... -
Quantum Information Enabled Neutron Interferometry
(University of Waterloo, 2017-06-12)Neutron interferometry with its ability to encode and extract information provides a test bed for quantum mechanics and precise measurement of physical quantities of significant importance in physics. However, this ... -
Resources Needed for Entangling Two Qubits through an Intermediate Mesoscopic System
(University of Waterloo, 2019-09-23)One of the main challenges in designing large scale quantum processors is connecting separated qubits. In this thesis, we explore new opportunities that mesoscopic many-body systems provide for creating quantum correlation ... -
Simulation and mitigation of noise in Rydberg atom systems using quantum optimal control
(University of Waterloo, 2021-02-18)We design a quantum optimal control protocol to mitigate the noise in Rydberg atom systems.