Browsing Physics and Astronomy by Title
Now showing items 118-137 of 766
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Dark Matter and Neutrinos in the Foggy Universe
(University of Waterloo, 2019-01-07)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 ... -
The data processing pipeline for the Herschel1 - HIFI instrument
(Elsevier, 2019-04)The HIFI data processing pipeline was developed to systematically process diagnostic, calibration and astronomical observations taken with the HIFI science instrument as part of the Herschel mission. The HIFI pipeline ... -
Data-driven and Hamiltonian-driven Quantum Simulations with Generative Models
(University of Waterloo, 2022-01-12)In the era of noisy intermediate-scale quantum devices (NISQ), a paradigm shift is occurring in the numerical physics community to transition towards developing algorithms that facilitate experimental realizations of quantum ... -
Decoherence by a non-Markovian and non-Gaussian Environment
(University of Waterloo, 2013-01-25)This thesis studies a spin-star model and an open spin-star model. The spin-star model is exactly solvable, and the approximation methods can be applied and compared with the exact solution. As this model is shown to be ... -
Decoupling of a neutron interferometer from temperature gradients
(AIP Publishing, 2016-12-16)Neutron interferometry enables precision measurements that are typically operated within elaborate, multi-layered facilities which provide substantial shielding from environmental noise. These facilities are necessary to ... -
Decoy-State Quantum Key Distribution with Arbitrary Phase Mixtures and Phase Correlations
(University of Waterloo, 2022-01-26)We formulate a general method to find bounds on the statistics of states passing through an unknown channel from the statistics of another set of states. We pay special attention to the application of this method to ... -
Defects and Boundaries in Quantum Field Theories
(University of Waterloo, 2021-07-29)We discuss some aspects of defects and boundaries in quantum field theories (QFTs) and their applications in revealing non-perturbative aspects of QFTs in combination with other techniques, including integrability. ... -
Demonstration of a Tunable Coupler Suitable for Investigating Ultra-strong Coupling Light-matter Interactions in Superconducting Devices
(University of Waterloo, 2022-05-02)One of the most ubiquitous processes in nature is the interaction of matter and an electromagnetic field which is well described using the spin-boson model. These light- matter interactions are specified by an interaction ... -
The Dependence of Halo Mass on Galaxy Size at Fixed Stellar Mass Using Weak Lensing
(University of Waterloo, 2017-04-24)Stellar mass has been shown to correlate with halo mass, but with significant scatter. The stellar mass-size and luminosity-size relationships of galaxies also show significant scatter in galaxy sizes for a fixed stellar ... -
The Dependence of Radio-Mode Feedback on Baryonic and Halo Mass
(University of Waterloo, 2014-08-26)Supermassive black holes launch powerful radio-synchrotron jets into the hot atmospheres of galaxy clusters, creating bubbles of displaced gas and driving shock fronts. These jets output a tremendous amount of energy, ... -
Design and Characterization of a Transceiver Telescope for Quantum Communications with Satellites
(University of Waterloo, 2021-09-30)Since the feasibility of free-space Quantum Key Distribution (QKD) was realized, a new race has begun amongst researchers to achieve the highest secure key rate and the most efficient protocols to form quantum communication ... -
Design and construction of an ion trapping apparatus for quantum simulation experiments
(University of Waterloo, 2019-09-26)The trapped ions platform represents an excellent framework for Quantum information science experiments. Long coherence times, extremely high state initialization and detection fidelity, inherent full-connectivity between ... -
Design and Implementation of an Entanglement Harvesting Experiment With Superconducting Flux Qubits
(University of Waterloo, 2022-05-16)Recent studies in relativistic quantum information have predicted that it is possible to entangle two qubits tunably coupled to the same quantum field in its vacuum state, by allowing the qubits to couple to the field ... -
Design and Implementation of the Real-Time Control System for an Open Trapped Ion Quantum Computing Platform
(University of Waterloo, 2023-09-08)Trapped atomic ions are a promising platform for the implementation of quantum bits and quantum information processors due to advantageous inherent physical properties as well as exquisite experimental control. Trapped ion ... -
Design of a Real-Time Embedded Control System for Quantum Computing Experiments
(University of Waterloo, 2020-01-27)This thesis describes the design of a real-time control system for trapped ion quantum computer experiments. It is framed in the context of the QuantumIon project, a project at the University of Waterloo’s ... -
Design of an Inverse Photoemission Spectrometer for the Study of Strongly Correlated Materials
(University of Waterloo, 2013-01-23)The design and construction of a state-of-the-art ultra-high vacuum spectrometer for the performance of angle-resolved inverse photoemission spectroscopy is presented. Detailed descriptions of its most important components ... -
Detecting the Surface Spin Polarization State of Topological Materials by Using Resonant X-ray Reflectometry
(University of Waterloo, 2019-10-21)The topological insulator as a promising and low cost next generation spintronic device attracts lots of attentions recently. The spin-momentum locking is a characteristic feature of topological materials at the surface ... -
Detection Efficiency Mismatch and Finite-Key-Size Attacks on Practical Quantum Cryptography Systems
(University of Waterloo, 2016-01-14)Security verification for the physical implementation of a cryptography system is an important step to ensure the security level promised by theory. As has been shown many times, any physical device has characteristics and ... -
Detectors, Reference Frames, and Time
(University of Waterloo, 2017-11-08)This thesis is divided into three parts. Part I investigates the behaviour of Unruh-DeWitt detectors on curved spacetimes admitting a Wightman function and the associated measurement model is identified. These detectors ... -
Developing a Generalized Model for Neutron Diffraction with Quantum Information Theory
(University of Waterloo, 2022-08-31)Due to their high mass and neutral electric charge, neutrons are often used at low energies to probe small-scale structures or measure fundamental constants of nature. To design neutron optical elements for use in these ...