Physics and Astronomy: Recent submissions
Now showing items 1-20 of 767
-
Correlation Functions of Heavy Operators in AdS/CFT
(University of Waterloo, 2024-04-15)In this thesis we investigate the holographic dual description of correlation functions of heavy operators in conformal field theory. These heavy operators have scaling dimension that scales with the CFT central charge in ... -
Development of III-V Semiconductor Surface Quantum Wells for Hybrid Superconducting Device Applications
(University of Waterloo, 2024-02-20)This thesis concerns the materials development of both InSb/InAlSb and InAs/AlGaSb surface quantum wells: Two of the most promising platforms for the study of proximity-induced superconductivity in semiconductors with ... -
Magnetotransport experiments in GaAs 2D holes and RF-QPC readout in a lateral quantum dot device
(University of Waterloo, 2024-02-16)This thesis presents a set of experiments conducted on GaAs/AlGaAs heterostructures fabricated into Hall bars and a lateral quantum dot device. The Hall bar experiments seek to further the understanding of the complexity ... -
Optimization of the Optical Infrastructure and Trapping Potential for a Quantum Processor Based on Trapped Barium Ions
(University of Waterloo, 2024-02-02)Trapped ion quantum computers represent a cutting-edge quantum computing platform, keeping the highest reported state preparation and measurement fidelity of 99.97%. Recently, barium ion has emerged as the research ... -
Thinking outside the box; fast error estimation for next generation galaxy surveys
(University of Waterloo, 2024-01-29)Since the discovery of the accelerated expansion of the universe in the late 90s, the flat $\Lambda$CDM model has reigned as the best explanation for the cosmological phenomena we have observed. In spite of over two decades ... -
Creating and probing laser-cooled atomic ensembles inside a hollow-core optical fibre
(University of Waterloo, 2024-01-26)A laser-cooled atomic ensemble confined inside a hollow-core optical fiber offers a unique platform for enhanced light-matter interactions and their applications. At the same time, transferring a cloud of laser-cooled ... -
Bootstrapping Quantum Field Theories
(University of Waterloo, 2024-01-23)This thesis compiles a few developments on the S-matrix bootstrap, conformal field theory, and integrability in N = 4 SYM. After an introduction contextualizing the various works that compose this thesis, we present a ... -
Towards Photonic Chip Integration of an Oscillating Photonic Bell State from a Semiconductor Quantum Dot
(University of Waterloo, 2024-01-18)The demand for entangled photon sources has been growing in all areas of quantum information technologies. However, many modern single-photon sources suffer from fundamental limitations which limit their ability to produce ... -
Hunting for the Primordial Quenched Population in 2 < z < 2.5 COSMOS Protoclusters
(University of Waterloo, 2024-01-17)We present an analysis of the galaxy stellar mass function (SMF) of 14 known protoclusters between 2.0 < z < 2.5 in the COSMOS field, down to a mass limit of 10⁹ᐧ⁵ M⊙. We use existing photometric redshifts with a statistical ... -
Two-Colour Nonlinear Amplification for Mid-infrared Generation by Difference Frequency Generation
(University of Waterloo, 2024-01-16)In this thesis, I discuss the development of a two-colour laser system which uses an all-normal dispersion fiber laser in combination with a gain-managed nonlinear amplifier as its broadband source. The goal is to develop ... -
An experimental study of single hole spin qubit coherence in a GaAs/AlGaAs double quantum dot device
(University of Waterloo, 2024-01-15)This thesis discusses a series of experiments performed on a p-type laterally-gated GaAs/AlGaAs double quantum dot device. The main purpose of these experiments was to explore the potential of a theoretically-predicted ... -
Imaging Molecular Structures with Femtosecond Laser Pulses: Experimental Apparatus Development and Computational Geometry Reconstruction
(University of Waterloo, 2024-01-15)A joint facility with the University of Waterloo and the Advanced Laser Light Source has been constructed, in order to explore the behavior of ions and electrons during ultrafast molecular dynamics. The sophisticated ... -
Assessing the Accuracy of Cosmological Parameters Estimated from Velocity – Density Comparisons
(University of Waterloo, 2024-01-10)A promising method for measuring the cosmological parameter combination fσ₈ is to compare observed peculiar velocities with peculiar velocities predicted from a galaxy density field using linear perturbation theory, known ... -
Implementation of a Universal Fine-Structure Splitting Eraser for Quantum Dots
(University of Waterloo, 2024-01-04)Entangled photons are an important resource for different applications in quantum computation, quantum information, and quantum communication. Sources based on semiconductor quantum dots have successfully obtained on-demand, ... -
The Role of Melatonin in Amyloid Interactions with the Model Neuronal Membranes
(University of Waterloo, 2023-11-29)The amyloid cascade hypothesis has long directed research efforts in understanding the pathogenesis of Alzheimer’s disease (AD), ever since it was first proposed through clinical evidence by Hardy and Higgins in 1992. ... -
Neutron Scattering Investigations of Three-Dimensional Topological States
(University of Waterloo, 2023-11-13)Topological magnets represent a unique class of quantum materials in which a nontrivial Berry curvature in real- or momentum-space couples to the magnetic properties of the topological electronic or spin system. Magnetic ... -
Techniques for Improving Numerical Secret Key Rates of Quantum Key Distribution Protocols
(University of Waterloo, 2023-10-24)Quantum Key Distribution (QKD) is a method for producing secure keys between two parties whose security does not rely on computational assumptions potentially breakable by quantum computers. However, physical constraints, ... -
Towards Pulsed Telecom Laser Ablation Loading for an Ytterbium Ion Trap
(University of Waterloo, 2023-10-23)Trapped ion system is a promising platform for quantum computing, with long qubit coherence, high gate and measurement fidelities. To harness the full potential of the trapped ion system, it is imperative to employ an ... -
The Evolution of Subhalo Orbits in Galaxy Clusters
(University of Waterloo, 2023-10-23)Galaxies and their dark matter structures are commonly found within larger-scale structures called galaxy clusters. These clusters exhibit unique conditions to their constituent galaxies, as they have an elevated density ... -
Modeling and managing noise in quantum error correction
(University of Waterloo, 2023-10-19)Simulating a quantum system to full accuracy is very costly and often impossible as we do not know the exact dynamics of a given system. In particular, the dynamics of measurement noise are not well understood. For this ...