Physics and Astronomy: Recent submissions
Now showing items 2140 of 555

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 ... 
Hall Resistance Characterization of Thermoelectric Materials; Subgap Leakage Measurement of Josephson Junctions
(University of Waterloo, 20200601)The thesis has two parts. The first part is the Hall measurement of thermoelectric materials which are promising energy sources in the future. By characterizing the Hall resistance at different environments, their charge ... 
Applications of the Quantum Kernel Method on a Superconducting Quantum Processor
(University of Waterloo, 20200529)The widespread benefits of classical machine learning along with promised speedups by quantum algorithms over their best performing classical counterparts have motivated development of quantum machine learning algorithms ... 
An OffLattice Model of the SanchezLacombe Equation of State for Polymers with Finite Flexibility
(University of Waterloo, 20200519)An extension to the offlattice Sanchez Lacombe equation of state is proposed by including internal degrees of freedom to account for the finite flexibility of polymer molecules. The extension allows polymer molecules to ... 
Understanding Polarization Distortions for Realworld Quantum Key Distribution
(University of Waterloo, 20200515)The field of quantum key distribution (QKD) has seen many advancements since its conception in 1984. Recently there have been developments towards establishing free space optical links between satellites and earth to enable ... 
Carbon nanotube electromechanical systems: Nonlinear dynamics and selfoscillation
(University of Waterloo, 20200513)This thesis is motivated by the many sensing applications of carbon nanotube (CNT) nanoelectromechanical systems (NEMS), both previous stateoftheart demonstrations and proposed new uses. This research is particularly ... 
Born Geometry
(University of Waterloo, 20200421)In this thesis, we summarize the work which we authored or coauthored during our PhD studies and also present additional details and ideas that are not found elsewhere. The main topic is the study of Tduality in theoretical ... 
Studying polymer physics by machine learning.
(University of Waterloo, 20200416)Recently, machine learning becomes a computational method that burst in popularity. Many disciplines, such as condensed matter physics, quantum chemistry, chemical engineering as well as polymer physics have incorporate ...