Physics and Astronomy
This is the collection for the University of Waterloo's Department of Physics and Astronomy .
Research outputs are organized by type (eg. Master Thesis, Article, Conference Paper).
Waterloo faculty, students, and staff can contact us or visit the UWSpace guide to learn more about depositing their research.
Recent deposits

Studies of Reentrance in Pyrochlore Magnets and Machine Learning of Quenched Gauge Symmetries
(University of Waterloo, 20200918)In this thesis, we present two explorations: (1) understanding the mechanism causing reentrant behavior in the rareearth pyrochlore magnet Er2Sn2O7, and (2) determining if unsupervised machine learning is capable of ... 
Emergent Fields, Flat Bands and Phase Competition: A Study in Magnetic Pyrochlore Systems
(University of Waterloo, 20200918)We investigate spins models on the pyrochlore and the breathing pyrochlore lattice. Specifically, we study polarized neutron scattering in classical spin ice modelled via Ising spins with antiferromagnetic interactions. ... 
Generalized holographic dualities for metric gravity & Quantum geometry based on area variables
(University of Waterloo, 20200918)Holography holds promise for simplifying computations in quantum gravity. In part I of this thesis, we construct holographic boundary theories for linearized gravity, for a general family of finite or quasilocal boundaries, ... 
Application of the FlagState Squashing Model to Numerical Quantum Key Distribution Security Analysis
(University of Waterloo, 20200918)The squashing model proof technique is a powerful tool in proving security of quantum key distribution (QKD) protocols since it reduces the dimension of the associated computational problem from infinite to finite. In the ... 
Messier 87: A Laboratory for Exploring AGN Variability using the Event Horizon Telescope
(University of Waterloo, 20200917)At a distance of 50 million light years at the heart of the Virgo cluster, lies the giant elliptical galaxy Messier 87. This galaxy has at its center a brilliant relativistic jet, observable at all wavelengths, and at the ... 
Interpolated Collision Model Formalism
(University of Waterloo, 20200916)The dynamics of open quantum systems (i.e., of quantum systems interacting with an uncontrolled environment) forms the basis of numerous active areas of research from quantum thermodynamics to quantum computing. One approach ... 
Tunable Coupler in Superconducting Circuits and Impedance Engineering for Josephson Parametric Amplifier
(University of Waterloo, 20200904)In this thesis, we study two topics on superconducting circuits. The first topic is the tunable coupler for resonators. This coupler is implemented with a superconducting circuit coupling with resonators in the dispersive ... 
Optimization of MBE growth of a highquality 2Dimensional Electron Gas in InAs/AlGaSb material system for pursuing a topdown approach towards realization of topological qubits.
(University of Waterloo, 20200904)Twodimensional electron gas (2DEG) in InAs quantum wells grown on nearly latticematched GaSb substrates is an ideal platform towards the realization of topological quantum computing with Majorana fermions, due to its low ... 
Toward standardization of Quantum Key Distribution
(University of Waterloo, 20200903)Information security becomes an inseparable part of our everyday life. An encryption method widely used today is publickey encryption. The security of this method is based on a hard to solve mathematical problems against ... 
Explorations in machine learning for interacting manybody systems.
(University of Waterloo, 20200903)Most interacting manybody systems in physics are not analytically solvable. Instead, numerical methods are needed for the study of these complex and highdimensional problems. At present, there are many interesting problems ... 
Tuneable Hybrid and Multimode Squeezed States of Light
(University of Waterloo, 20200903)Gaussian quantum states of light have many applications in quantum technologies. Two of the most widely used Gaussian quantum states of light are the single and twomode squeezed states. In this thesis, we propose the ... 
Amended Model of Large Scale Dark Matter Structure
(University of Waterloo, 20200903)Dark matter makes up around a quarter of the total energy density in the universe, but its identity remains elusive. Current ways of studying dark matter have centered around its macroscopic properties, such as density ... 
Numerical Finite Key Analysis
(University of Waterloo, 20200902)In this thesis, we begin by both expounding and improving the theory of finite key analysis. Our improvement of the analysis in turn improves the amount of key that can be generated for protocols without nice symmetries. ... 
Predicting the thioflavin fluorescence of retinal amyloid deposits in association with Alzheimer’s disease and differentiating amyloid protein from alphasyn
(University of Waterloo, 20200902)Alzheimer’s disease (AD) is a neurodegenerative disease and the most common cause of dementia. According to the World Health Organization (WHO) in 2019, dementia affects around 50 million people worldwide and this number ... 
Novel HeatBath Algorithmic Cooling methods
(University of Waterloo, 20200820)The field of quantum information has inspired new methods for cooling physical systems at the quantum scale by manipulating entropy in an algorithmic way, such as heatbath algorithmic cooling (HBAC). These methods not ... 
Quantum Gravity Renormalization Group
(University of Waterloo, 20200727)Investigations relating the emergence of the radial direction in the holography, solvable irrelevant deformations of conformal eld theories and holographic entanglement entropy are reported. Emphasis is laid on how ... 
Continuous Tensor Networks, Conformal Field Theory and Holography
(University of Waterloo, 20200723)Tensor network methods are playing a central role in multiple disciplines of modern quantum physics, such as condensed matter physics, quantum information and quantum gravity. Based on renormalization group (RG) ideas, ... 
Tensor networks, quantum spin chains, and quantum field theory
(University of Waterloo, 20200707)Understanding the universality class of continuous phase transition is of central importance in condensed matter physics. In one spatial dimension, the universal properties are encoded in the conformal field theory (CFT), ... 
Renormalization, Entanglement and Continuous Tensor Networks
(University of Waterloo, 20200707)The study of the ground states of local Hamiltonians in quantum manybody and quantum field theoretic systems is a source of many research problems of great complexity. Almost in its entirety, this thesis deals with ... 
Reconstructing quantum molecular rotor ground states
(Physical Review B, 20200706)Nanomolecular assemblies of C60 can be synthesized to enclose dipolar molecules. The lowtemperature states of such endofullerenes are described by quantum mechanical rotors, which are candidates for quantum information ...