Browsing Physics and Astronomy by Title
Now showing items 533-552 of 767
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Quantum tests of causal structures and non-orthogonal states
(University of Waterloo, 2014-06-13)This thesis details two experimental tests that can be applied to particular quantum states to reveal important information. We begin by discussing the relevant background in quantum information. We introduce qubits and ... -
Quantum-Classical Correspondence and Entanglement in Periodically Driven Spin Systems
(University of Waterloo, 2019-08-09)This dissertation sets out to examine some fundamental open questions in quantum physics regarding quantum-classical correspondence in regular versus chaotic systems. Specifically, we study these questions using approaches ... -
Quantum-information approach to dynamical diffraction theory
(American Physical Society, 2016-12-08)We present a simplified model for dynamical diffraction of particles through a periodic thick perfect crystal based on repeated application of a coherent beam-splitting unitary at coarse-grained lattice sites. By demanding ... -
A Quasilocal Hamiltonian for Gravity with Classical and Quantum Applications
(University of Waterloo, 2000)I modify the quasilocal energy formalism of Brown and York into a purely Hamiltonian form. As part of the reformulation, I remove their restriction that the time evolution of the boundary of the spacetime be orthogonal ... -
Quaternions and Quantum Theory
(University of Waterloo, 2011-08-30)The orthodox formulation of quantum theory invokes the mathematical apparatus of complex Hilbert space. In this thesis, we consider a quaternionic quantum formalism for the description of quantum states, quantum channels, ... -
Rare Events Prediction: Rogue Waves and Drags
(University of Waterloo, 2018-10-24)Rogue waves are rare events with unusually large wave amplitudes. In this thesis the multicanonical procedure is applied to the one-dimensional nonlinear Schrödinger equation in conjunction with a high order finite difference ... -
Re-visiting the Radio-Mechanical Feedback in Brightest Cluster Galaxies
(University of Waterloo, 2023-01-23)The self-regulated feedback from the Active Galactic Nucleus (AGN) plays a key role in the formation and evolution of galaxies by heating and expelling gas in galaxies. The goal of this thesis is to investigate the role ... -
REAL-TIME OBSERVATION OF MOLECULAR REACTION MECHANISM OF HALOPYRIMIDINES AS RADIO-/PHOTOSENSITIZING DRUGS USING TIME-RESOLVED FEMTOSECOND LASER SPECTROSCOPY
(University of Waterloo, 2007-05-22)Replacement of thymidine in DNA by halopyrimidines, such as bromodeoxyuridine (BrdU) and iododeoxyuridine (IdU), has long been known to enhance DNA damage and cell death induced by ionizing/UV radiation, but the mechanism ... -
Realisation of Quantum Operations using Linear Optics
(University of Waterloo, 2011-10-04)The main topic of this thesis is linear optics and the implementation of quantum operations (measurements, quantum channels, and unitary rotations) on optical systems. In the opening chapter the basic notions needed to ... -
Realization of novel entangled photon sources using periodically poled materials
(University of Waterloo, 2010-10-01)This thesis deals with the production of entangled photons using spontaneous parametric down-conversion (SPDC). We start with a short overview of some important theoretical concepts. First we provide a brief reminder of ... -
Reconstructing Cosmic Velocities with the Kinetic Sunyaev-Zeldovich Effect
(University of Waterloo, 2021-09-13)Over the last few decades, Physical Cosmology has come a long way from a primitive and data-deprived field of research with several speculative theories of origin, evolution, and composition of the Universe to a mature, ... -
Reconstructing quantum molecular rotor ground states
(Physical Review B, 2020-07-06)Nanomolecular assemblies of C60 can be synthesized to enclose dipolar molecules. The low-temperature states of such endofullerenes are described by quantum mechanical rotors, which are candidates for quantum information ... -
Red-shifted Spectrum in Multi-frequency Raman Generation
(University of Waterloo, 2021-08-27)Multi-frequency Raman Generation (MRG) is a promising technique to generate few-femtosecond to sub-femtosecond pulses with high energy conversion efficiency. During the transient MRG experiments coupled with two chirped ... -
Reducing the electric field sensitivity of a Rydberg state transition by the application of a non-resonant microwave field
(University of Waterloo, 2013-01-23)The 87Rb 49s->48s Rydberg state transition was rendered insensitive to electric field fluctuations about a 1V/cm dc electric field. This was accomplished by applying a non-resonant 38.445GHz microwave field to modify the ... -
Reduction of polymer surface tension by crystallized polymer nanoparticles
(AIP Publishing, 2010-10-14)Self-consistent field theory is applied to investigate the effects of crystallized polymer nanoparticles on polymer surface tension. It is predicted that the nanoparticles locate preferentially at the polymer surface and ... -
Reference Frames and Algorithms for Quantum Information Processing
(University of Waterloo, 2009-08-27)The main results of this thesis fall in to two areas, firstly quantum reference frames as a resource for quantum computations and secondly quantum algorithms. The results relating to quantum references consider their scaling ... -
The Relationship Between Active Galactic Nuclei and Metal-enriched Outflows in Galaxy Clusters
(University of Waterloo, 2012-01-25)Clusters of galaxies are host to powerful Active Galactic Nuclei (AGN) that greatly affect the thermal history of clusters. By keeping X-ray emitting gas from cooling, massive, run away star formation does not occur in the ... -
Relationship between vessel diameter and depth measurements within the limbus using ultra-high resolution optical coherence tomography
(Elsevier, 2018-01-01)Purpose To establish a relationship between the diameter and depth position of vessels in the superior and inferior corneo-scleral limbus using ultra-high resolution optical coherence tomography (UHR-OCT). Methods Volumetric ... -
Renormalization, Entanglement and Continuous Tensor Networks
(University of Waterloo, 2020-07-07)The study of the ground states of local Hamiltonians in quantum many-body and quantum field theoretic systems is a source of many research problems of great complexity. Almost in its entirety, this thesis deals with ... -
Representation, Characterization, and Mitigation of Noise in Quantum Processors
(University of Waterloo, 2023-05-26)Quantum computers have the potential to outperform classical computers on several families of important problems, and have a great potential to revolutionize our understanding of computational models. However, the presence ...