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

Quantum Algorithmic Techniques for FaultTolerant Quantum Computers
(University of Waterloo, 20191001)Quantum computers have the potential to push the limits of computation in areas such as quantum chemistry, cryptography, optimization, and machine learning. Even though many quantum algorithms show asymptotic improvement ... 
Nonperturbative approaches to Scattering Amplitudes
(University of Waterloo, 20190926)This thesis is devoted to the study of scattering amplitudes using two nonperturbative approaches. In Part I we focus on a particular theory known as N = 4 SuperYangMills in four spacetime dimensions. The scattering ... 
Holographic Optical Manipulation of Trapped Ions for Quantum Simulation
(University of Waterloo, 20190926)Trapped ion is one of the leading platforms for quantum simulation experiment due to its long coherence time and high fidelity state initialization, detection, and manipulation. To individually address ions at a singleion ... 
Design and construction of an ion trapping apparatus for quantum simulation experiments
(University of Waterloo, 20190926)The trapped ions platform represents an excellent framework for Quantum information science experiments. Long coherence times, extremely high state initialization and detection fidelity, inherent fullconnectivity between ... 
Measuring Trapped Ion Qudits
(University of Waterloo, 20190926)Quantum information has typically focused on using 2level qubits to perform simulation and computation. We propose to expand the number of levels for computation using qudits, where \(d>2\). Doing so could be a viable ... 
Tolerable Experimental Imperfections for a Quadrupole Blade Ion Trap and Practical Qudit Gates with Trapped Ions
(University of Waterloo, 20190926)Trapped ions are one of the leading technologies in quantum information technology due to their long coherence time and low noise presence. For trapping ions, there are a plethora of ion trap architectures. Among them ... 
Fluctuation effects in blends of A+B homopolymers with AB diblock copolymer
(AIP, 201805)Fieldtheoretic simulations (FTS) are performed on ternary blends of A and Btype homopolymers of polymerization N_h and symmetric AB diblock copolymer of polymerization N_c. Unlike previous studies, our FTS are conducted ... 
Fluctuation correction for the critical transition of symmetric homopolymer blends
(AIP, 201707)Monte Carlo simulations are performed on structurally symmetric binary homopolymer blends over a wide range of invariant polymerization indexes, N. A finitesize scaling analysis reveals that certain critical exponents ... 
Calibration of a Lattice Model for HighMolecularWeight Block Copolymer Melts
(AIP, 20190506)The Morse calibration is applied to a lattice model designed for efficient simulations of twocomponent polymer melts of high molecular weight. The model allows multiple occupancy per site, which results in high invariant ... 
Contextuality and Ontological Models: A Tale of Desire and Disappointment
(University of Waterloo, 20190923)Since being defined by Kochen and Specker, and separately by Bell, contextuality has been proposed as one of the key phenomena that distinguishing quantum theory from classical theories. However, with the rise of quantum ... 
Resources Needed for Entangling Two Qubits through an Intermediate Mesoscopic System
(University of Waterloo, 20190923)One of the main challenges in designing large scale quantum processors is connecting separated qubits. In this thesis, we explore new opportunities that mesoscopic manybody systems provide for creating quantum correlation ... 
Setup of Dry Cryostat for Measurements on Superconducting Microwave Resonators
(University of Waterloo, 20190920)A cryogenfree cryostat was set up in order to perform measurements at ultra low temperatures. The setup involved the removal of an adiabatic demagnetization refrigerator (ADR) and replacing it with a dilution refrigerator ... 
Optical Quantum Communication & Cryptography with Temporarily Trusted Parties
(University of Waterloo, 20190919)The work in this thesis can be divided into three parts. The first two parts deal with optical quantum communication protocols and the third part deals with quantum cryptography. The first part of the thesis is a step ... 
Effect of chain stiffness on the entropic segregation of chain ends to the surface of a polymer melt
(2019)Entropic segregation of chain ends to the surface of a monodisperse polymer melt and its effect on surface tension is examined using selfconsistent field theory (SCFT). In order to assess the dependence on chain stiffness, ... 
Tunable threebody interactions between superconducting flux qubits for quantum annealing
(University of Waterloo, 20190903)The field of quantum information has been a fast growing field of research in the last few decades. The reason for this development is the potentially immense power of quantum computers, capable of solving hard problems ... 
Probing universality with entanglement entropy via quantum Monte Carlo
(University of Waterloo, 20190830)Our understanding of physical phenomena hinges on finding universal core mechanisms that unite them. The concept of universality is deeply ingrained in the study of quantum manybody systems. At zero temperature, microscopically ... 
Optical Resonators Integrated into a Hollow Core Photonic Crystal Fiber for Enhanced LightMatter Interactions
(University of Waterloo, 20190829)The focus of this thesis is to investigate and fabricate a platform that can facilitate the enhancement of lightmatter interactions. By tightly confining the photons and atoms to the same region of space, the probability ... 
Equilibrium Phase Behaviour of Liquid Crystalline Polymer Brushes
(University of Waterloo, 20190829)Using selfconsistent field theory of wormlike chains with MaierSaupe interactions we study the equilibrium phase behaviour of liquid crystalline (LC) polymer brushes. In a good solvent the brush extends out normal to ... 
Machine Learning Topological Defects of Liquid Crystals in Two Dimensions
(University of Waterloo, 20190826)Over the recent few years, condensed matter physics has keenly been testing out the compelling techniques from the toolbox of machine learning. Order parameters, phase transitions, and other thermodynamic quantities have ... 
Fast Switchable Ultrastrong Coupling Between Superconducting Artificial Atoms and Electromagnetic Fields
(University of Waterloo, 20190823)This thesis consists of two parts: the main part is a theoretical investigation of the ultrastrong coupling regime for atomlight coupling in superconducting circuits, and the second part is concerned with the development ...