Browsing Physics and Astronomy by Title
Now showing items 405-424 of 768
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Non-perturbative aspects of gauge theories
(University of Waterloo, 2022-06-06)The purpose of this thesis is to establish some non-perturbative results in gauge theories in d<=4 spacetime dimensions. We generically refer to such theories as Quantum Chromodynamics (QCD). Gauge theories are asymptotically ... -
Nonlinear Behavior of Unstable Black Holes in Anti-de Sitter Spacetimes
(University of Waterloo, 2020-09-25)The nonlinear dynamics of black holes is an increasingly relevant topic of which little is known. In this thesis, we study the full nonlinear dynamics of black holes, as well as their linear behavior, and combine them ... -
Nonlinear Hybrid Plasmonic Waveguides
(University of Waterloo, 2013-06-20)Due to the increased demand for high-operating-speed systems and ultra-compact optical devices, nanophotonic waveguides such as plasmonic waveguides have been a subject of intense interest over the past few years. The ... -
Novel Approaches to Gravity Scattering Amplitudes
(University of Waterloo, 2014-03-14)Quantum Field Theory (QFT) provides the essential background for formulating the standard model of elementary particles and, moreover, practically all other theories attempting to explore the physical laws of nature at the ... -
A Novel Combination Therapy of Cisplatin with a Molecular Promoter for Cancer Treatment
(University of Waterloo, 2017-01-25)Cisplatin is the first and most widely used platinum-based chemotherapy drug and is the cornerstone agent in treating a broad spectrum of cancers, including ovarian cancer, testicular cancer, cervical cancer, bladder cancer, ... -
Novel Heat-Bath Algorithmic Cooling methods
(University of Waterloo, 2020-08-20)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 heat-bath algorithmic cooling (HBAC). These methods not ... -
Novel Methods in Quantum Error Correction
(University of Waterloo, 2016-08-24)Quantum error correction is the backbone of fault-tolerant quantum computation, a necessary requirement for any large scale quantum computer. The fault-tolerance threshold theorem has long been a target for experimental ... -
Nuclear Spin Dynamics Under Above-Bandgap Optical Pumping in Silicon
(University of Waterloo, 2021-02-26)Phosphorus defects in silicon have been proposed as candidates for quantum information and quantum sensing applications, with proposals utilizing both the donor electron spin as well as the 31P nuclear spin. Initialization ... -
Numerical Engineering of Adiabatic Quantum Operations
(University of Waterloo, 2020-01-23)Adiabatic quantum operations are ubiquitous in fields such as quantum information processing, quantum control, and magnetic resonance, where their high fidelity and general robustness renders them an essential tool for ... -
Numerical Finite Key Analysis
(University of Waterloo, 2020-09-02)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. ... -
Numerical studies of transport and spin-orbit exchange in InAs nanowires
(University of Waterloo, 2013-01-11)High spin-orbit coupling and low effective mass of electrons in InAs nanowires makes it an attractive material for studying quantum physics in mesoscopic and nanoscale quantum devices. We first study the transport properties ... -
Observation of Resonant Electric Dipole-Dipole Interactions Between Cold Rydberg Atoms Using Microwave Spectroscopy
(University of Waterloo, 2006)This thesis reports the first observation of the resonant electric dipole-dipole interaction between cold Rydberg atoms using microwave spectroscopy, the observation of the magnetic field suppression of resonant interactions, ... -
Octupolar Ordering in the b>0 Bilinear-Biquadratic Heisenberg Pyrochlore
(University of Waterloo, 2019-01-25)We investigate the bilinear-biquadratic Heisenberg model on the pyrochlore lattice. While negative biquadratic couplings result in a first-order transition into a nematic ordered state with spins aligned mutually ... -
An off-lattice derivation and thermodynamic consistency consideration for the Sanchez-Lacombe equation of state
(University of Waterloo, 2017-11-09)The application of the Sanchez-Lacombe equation of state (SL-EOS) to homogeneous polymeric mixtures is requisite for the application of some types of Self-Consistent Field Theory (SCFT) to inhomogeneous mixtures. It has ... -
An Off-Lattice Model of the Sanchez-Lacombe Equation of State for Polymers with Finite Flexibility
(University of Waterloo, 2020-05-19)An extension to the off-lattice 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 ... -
On an Electron Spin Resonance Spectrometer for Quantum Information Processing
(University of Waterloo, 2011-01-24)Electron spins are an attractive candidate for an implementation of quantum information processing (QIP) due to high polarization, fast control and long coherence times. Control in electron spin resonance benefits from ... -
On an Instrument for the Coherent Investigation of Nitrogen-Vacancy Centres in Diamond
(University of Waterloo, 2013-09-27)It is my hope that this thesis may serve as a guide for future students wishing to build a microscope from scratch. The design and construction of a scanning, confocal fluorescence microscope equipped with shaped microwave ... -
On Cohomological Algebras in Supersymmetric Quantum Field Theories
(University of Waterloo, 2019-08-16)In this thesis we compute certain supersymmetric subsectors of the algebra of observables in some QFTs and demonstrate an application of such computation in checking an instance of Holographic duality. Computing the algebra ... -
On Design and Testing of a Spectrometer Based on An FPGA Development Board for use with Optimal Control Theory and High-Q Resonators
(University of Waterloo, 2014-02-24)Recent developments in quantum information processing have presented new and interesting ways to perform advanced algorithms and improve signal to noise ratios. Examples of these include optimal control theory pulse ... -
On Experimental Deterministic Quantum Computation with One Quantum Bit (DQC1)
(University of Waterloo, 2012-03-27)Quantum information processors have the ability to drastically change our world. By manipulating bits of information ruled by the laws of quantum mechanics, computational devices can perform some computations that are ...