Browsing Physics and Astronomy by Title
Now showing items 400-419 of 767
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Noise refocusing in a five-blade neutron interferometer
(AIP Publishing, 2017-08-07)We provide a quantum information description of a proposed five-blade neutron interferometer geometry and show that it is robust against low-frequency mechanical vibrations and dephasing due to the dynamical phase. The ... -
(Non)-Invertible Topology in Quantum Field Theory
(University of Waterloo, 2023-06-05)This thesis aims to highlight aspects of mathematics and physics that arise in topological field theories. We will consider invertible and noninvertible topological theories. In the former case, we compute the classification ... -
Non-Markovianity in Logical Fidelity Estimation
(University of Waterloo, 2021-02-26)As quantum devices are progressively scaled and refined, quantum codes will become indispensable to guarantee reliable computation in the presence of noise. Due to the difficulties of characterizing physical noise, direct ... -
Non-perturbative approaches to Scattering Amplitudes
(University of Waterloo, 2019-09-26)This thesis is devoted to the study of scattering amplitudes using two non-perturbative approaches. In Part I we focus on a particular theory known as N = 4 Super-Yang-Mills in four spacetime dimensions. The scattering ... -
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 ...