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

Customized nonlinearity shaping in imperfect or variable waveguides
(University of Waterloo, 20190531)Generation of highquality single photons via heralded parametric downconversion re quires careful design of spectral correlations in downconverted photon pairs. One step in this design process involves customized ... 
Characterizing Single Photon Emission From Quantum Dots in Nanowires
(University of Waterloo, 20190528)Bright sources of highly indistinguishable single photons are desirable for diverse applications in quantum technology, including quantum cryptographic protocols, information processing, and metrology. The most common ... 
Measuring NonMarkovianity of Noise in the Cenrtal Spin System
(University of Waterloo, 20190524)In this thesis, we explore nonMarkovian noise in the central spin system due to the coupling between the central spin and the environment. We use a solid state nuclear magnetic resonance system to do the experiment since ... 
Biophysical Modelling of Antimicrobial Peptide’s Interactions with Phospholipid and Lipopolysaccharide Membranes
(University of Waterloo, 20190523)Antimicrobial peptides (AMPs) are naturallyoccurring peptide antibiotics. The way they work has inspired a vigorous search for optimized peptide antibiotics for fighting resistant bacteria. Cationic AMPs cleverly utilize ... 
Symmetry of the Charge Ordering Phases in HoleDoped Cuprates Studied by Resonant XRay Absorption and Scattering
(University of Waterloo, 20190523)In the underdoped cuprates, superconductivity coexists with a rich variety of other electronic orders. Understanding the nature of these orders, how they interact with one another, and the mechanisms that produce them is ... 
Superradiance and its implementation in cold atoms inside a hollowcore waveguide
(University of Waterloo, 20190523)In this thesis, I am intending to understand the cooperative effect of an ensemble of quantum emitters, which constitutes the preliminary elements of our current experimental investigations towards realization of an ... 
Setup and Design of a Cryogenic Testing Station with Focus on Characterization of Superconducting Devices
(University of Waterloo, 20190523)The goal of my thesis was to construct a general purpose cryostat, capable of measuring multiple devices at 100mK. This included modifying an existing SHASTA model 106 Adiabatic Demagnetization Refrigerator (ADR) by adding ... 
Loop Optimization of Tensor Network Renormalization: Algorithms and Applications
(University of Waterloo, 20190522)Loop optimization for tensor network renormalization (loopTNR) is a realspace renormalization group algorithm suitable for studying 1+1D critical systems. While the original proposal by Yang et al. focused on classical ... 
A Subclass of Exceptional Parallel Selfsimilar G2 Cosmologies
(University of Waterloo, 20190513)We perform a qualitative and asymptotic analysis of a particular class of cosmological models, namely the exceptional G2 perfect fluid and vacuum models that are additionally selfsimilar with the fluid flow lying tangential ... 
Transition Matrix Monte Carlo Methods for Complex Systems
(University of Waterloo, 20190415)The aim of this thesis is to develop efficient transition matrix Monte Carlo simulation methods for complex systems(e.g., spin glasses) that enable one to construct the transition matrix from which the density of states ... 
Study of unintentional As incorporation into AlSb and interfacial layers within InAs/AlSb superlattices
(University of Waterloo, 20190221)Highly strained interfaces may exist between indium arsenide (InAs) and aluminum antimonide (AlSb) layers grown by Molecular Beam Epitaxy (MBE). The composition and thickness of the interfacial layers strongly influence ... 
Ultrafast Metrology in the Quantum Domain
(University of Waterloo, 20190215)Single photons are a natural platform for quantum technologies as they support entanglement in many degrees of freedom and are inherently well protected from a detrimental type of noise called decoherence. In order to ... 
Techniques for Coherent Control of Effective PhotonPhoton Interactions at Low Light Levels
(University of Waterloo, 20190201)This thesis proposes improvements on techniques for the coherent control of photonphoton interactions mediated by a cloud of cold atoms. Atoms cooled and trapped in a MOT can be loaded into a hollow, photonic crystal ... 
Octupolar Ordering in the b>0 BilinearBiquadratic Heisenberg Pyrochlore
(University of Waterloo, 20190125)We investigate the bilinearbiquadratic Heisenberg model on the pyrochlore lattice. While negative biquadratic couplings result in a firstorder transition into a nematic ordered state with spins aligned mutually ... 
Sensing the shape of spacetime: detector response and entanglement harvesting in curved space
(University of Waterloo, 20190124)This thesis seeks to understand what information UnruhDeWitt detectors can gain about the structure of spacetime. By coupling to the quantum state of a field on a curved space, the detectors can gain information about ... 
Study of Surface Quantum Wells in InSb/AlInSb Heterostructures
(University of Waterloo, 20190124)The strong spin orbit coupling and large Lande gfactor of InSb compared to the other IIIV semiconductors makes InSb an ideal choice for potential use in topological quantum computing with Majorana fermions. Furthermore, ... 
Explorations of Black Hole Thermodynamics in de Sitter Spacetime
(University of Waterloo, 20190123)In this thesis I map out two approaches that are foundational to studying black hole thermodynamics in de Sitter spacetime. The first is to understand the "thermodynamic volume" of cosmological horizons in isolation. ... 
Methods for parallel quantum circuit synthesis, faulttolerant quantum RAM, and quantum state tomography
(University of Waterloo, 20190118)The pace of innovation in quantum information science has recently exploded due to the hope that a quantum computer will be able to solve a multitude of problems that are intractable using classical hardware. Current quantum ... 
Probing Accretion Turbulence in the Galactic Centre with EHT Polarimetry
(University of Waterloo, 20190109)We explore the origin and the influence of the interstellar scattering on the observation of Sgr A*, and the method to mitigate this scattering via Event Horizon Telescope (EHT) polarimetry. Interstellar scattering is due ... 
Dark Matter and Neutrinos in the Foggy Universe
(University of Waterloo, 20190107)Dark matter is predicted to be the main contribution to the matter content in the universe, in addition to ordinary baryonic matter such as protons and neutrons. However, we are limited in our knowledge of the nature of ...