Physics and Astronomy
This is the collection for the University of Waterloo's Department of Physics and Astronomy.
Recent Submissions

Horizon Thermodynamics from Einstein's Equation of State
(University of Waterloo, 20170428)The striking resemblance between geometric theories of gravity and thermodynamics suggests a more fundamental relationship between the two seemingly distinct theories. It has been postulated that the radial Einstein ... 
The Dependence of Halo Mass on Galaxy Size at Fixed Stellar Mass Using Weak Lensing
(University of Waterloo, 20170424)Stellar mass has been shown to correlate with halo mass, but with significant scatter. The stellar masssize and luminositysize relationships of galaxies also show significant scatter in galaxy sizes for a fixed stellar ... 
A Novel Combination Therapy of Cisplatin with a Molecular Promoter for Cancer Treatment
(University of Waterloo, 20170125)Cisplatin is the first and most widely used platinumbased chemotherapy drug and is the cornerstone agent in treating a broad spectrum of cancers, including ovarian cancer, testicular cancer, cervical cancer, bladder cancer, ... 
An Exploration of Locality, Conservation Laws, and Spin
(University of Waterloo, 20170123)Conservation rules are central to our understanding of the physical world, they place re strictions on how particles can move and dictate what can occur during an interaction. However, it is often taken for granted how a ... 
On The Origin of Cold Molecular Gas In Giant Elliptical Galaxies
(University of Waterloo, 20170123)We present an analysis of 55 giant elliptical galaxies residing in the centre of clusters and groups to investigate the origin of H₂ molecular gas centrally located in these galaxies. Using Chandra Xray data and IRAM 30m ... 
RFQPC Charge Detector and ST₊ Qubit in a Lateral Double Quantum Dot Device
(University of Waterloo, 20170118)A measurement system is developed for studying a lateral double quantum dot (DQD) device formed in the twodimensional electron gas (2DEG) of a GaAs/AlGaAs heterostructure. Copper powder and RC filters are constructed to ... 
Topics in FaultTolerant Quantum Computation
(University of Waterloo, 20170112)This thesis contains the results of research projects broadly related to the pursuit of universal faulttolerant quantum computation. We are interested in questions such as which resources are required to achieve a quantum ... 
Electron transport in semiconducting nanowires and quantum dots
(University of Waterloo, 20170110)Single electrons confined in electrostatic quantum dots are a promising platform for realizing spin based quantum information processing. In this scheme, the spin of each electron is encoded as a qubit, and can be manipulated ... 
Conical Designs and Categorical Jordan Algebraic PostQuantum Theories
(University of Waterloo, 20170106)Physical theories can be characterized in terms of their state spaces and their evolutive equations. The kinematical structure and the dynamical structure of finite dimensional quantum theory are, in light of the ... 
Ultrafast manipulation of single photons using dispersion and sumfrequency generation
(University of Waterloo, 20161201)Single photons provide a natural platform for quantum communication and quantum networking, as they can be entangled in many degrees of freedom and maintain coherence over longdistance links. However, while their minimal ... 
Collective Dynamics in NMR and Quantum Noise
(University of Waterloo, 20161017)We introduced an open quantum system model to describe the statistical fluctuations of a spin ensemble in NMR. The model considers an ensemble measurement where the detection coil does not distinguish spins, and accounts ... 
Symmetric Extendability of Quantum States and the Extreme Limits of Quantum Key Distribution
(University of Waterloo, 20161013)We investigate QKD protocols with twoway classical postprocessing that are based on the wellknown sixstate and BB84 signal states. In these QKD protocols, the source (Alice) sends quantum signals to the receiver (Bob), ... 
The computational power of manybody systems
(University of Waterloo, 20160928)Manybody systems are well known throughout physics to be hard problems to exactly solve, but much of this is folklore resulting from the lack of an analytic solution to these systems. This thesis attempts to classify the ... 
In vitro test of a potential hypoxic radiosensitizer
(University of Waterloo, 20160928)Oxygen has long been known as a potent radiosensitizer that can enhance the cell killing effects in aerobic cells, while pruned vasculatures and lack of oxygen in the microenvironment of tumor can cause resistance to ... 
The Compilation of Reversible Circuits and a New Optimization Game
(University of Waterloo, 20160928)The focus of this thesis is reversible circuit compilation. We will explore the use of pebble games for circuit analysis. The usefulness of this technique is demonstrated by finding a new space bound for the Karatsuba ... 
Exploring the foundation of quantum information in quantum optics
(University of Waterloo, 20160921)Quantum information is promising in solving certain computational problems and information security. The power of its speed up and privacy is based on one of the most tested physical theory: quantum mechanics. Many of ... 
Exact results in QFT: Minimal Areas and Maximal Couplings
(University of Waterloo, 20160914)This thesis is devoted to a twopronged study of nonperturbative quantum field theory. In Part I we focus on the fourdimensional super conformal $\mathcal{N}=4$ Yang Mills theory. We compute smooth Wilson loops and ... 
Magnetic Ordering of Dipolar Spin Ice in Moderate [111] Field
(University of Waterloo, 20160908)This thesis explores the low temperature physics of the macroscopically degenerate system of dipolar spin ice in moderate fields applied along the [111] cubic axis. While most applications of field generically lift the ... 
Charged Black Hole Solutions in Alternative Theories of Gravity
(University of Waterloo, 20160906)In my thesis, I examine charged black holes in two contexts. The first part covers the formation of something analogous to event horizons for a class of LorentzViolating theories which allow for signals to travel faster ... 
Wavefront assessment and correction of the rat eye for two photon excitation therapies
(University of Waterloo, 20160831)Photodynamic therapy (PDT) is a treatment in which light excites a photosensitive drug to produce oxygen radicals that kills nearby cells. Today, PDT’s is most commonly used application is for the destruction of cancerous ...