Physics and Astronomy
This is the collection for the University of Waterloo's Department of Physics and Astronomy .
Research outputs are organized by type (eg. Master Thesis, Article, Conference Paper).
Waterloo faculty, students, and staff can contact us or visit the UWSpace guide to learn more about depositing their research.
Recent deposits
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Augmenting Quantum Mechanics with Artificial Intelligence
(University of Waterloo, 2018-12-04)The simulation of quantum matter with classical hardware plays a central role in the discovery and development of quantum many-body systems, with far-reaching implications in condensed matter physics and quantum technologies. ... -
Topological Order and Universal Properties of Gapped Quantum Systems
(University of Waterloo, 2018-11-15)Phases of gapped quantum liquids are topologically ordered and have very interesting physical features that are completely robust against any local perturbation that do not close the bulk energy gap. These universal ... -
Synthesis of Polyynes by Femtosecond and Nanosecond Laser Interaction with Matter
(University of Waterloo, 2018-10-24)A review of literature including some history and previous work done in the field is done showing the importance of polyynes themselves and as an important precursor in the formation of other interesting carbon nanoparticles ... -
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 ... -
New methods in quantum error correction and fault-tolerant quantum computing
(University of Waterloo, 2018-10-22)Quantum computers have the potential to solve several interesting problems in polynomial time for which no polynomial time classical algorithms have been found. However, one of the major challenges in building quantum ... -
Compact Two-color Ultrafast Yb:fiber Chirped Pulse Amplifiers and Mid-infrared Generation Based on Difference Frequency Generation
(University of Waterloo, 2018-10-18)A powerful mid-infrared frequency comb in the 2-20 μm range plays a very important role in the development of optical frequency metrology, spectroscopy and other fields of technology. However, there is a big gap in the ... -
Polarimetric and birefringence analysis of presumed amyloid-beta deposits in the retina in association with Alzheimer's disease
(University of Waterloo, 2018-09-26)Alzheimer's disease is a neurodegenerative disease which leads to symptoms such as loss of memory and other neurological dysfunctions, ultimately leading to death. Two key hallmarks of Alzheimer's disease are abnormally ... -
An ALMA View of Molecular Gas in Brightest Cluster Galaxies
(University of Waterloo, 2018-09-25)In this thesis I use ALMA observations to map the distribution and kinematics of molecular gas in the brightest cluster galaxies of three galaxy clusters: 2A0335+096, RXJ0821+0752, and RXCJ1504-0248. The goal is to understand ... -
Silicon avalanche photodiodes for satellite based quantum communication
(University of Waterloo, 2018-09-25)Single photons detectors are required for applications like quantum key distribution and testing Bell's inequalities. Silicon avalanche photodiodes (Si APD's) have advantages like low dark count rate. This thesis aims to ... -
Galactic Molecular Dust Clumps using SCUBA-2 - Effects of HII Regions on Star Formation
(University of Waterloo, 2018-09-21)I present findings from a broad array of SCUBA-2 observations. The sample consists of 38 SCUBA-2 images targeted near mature, galactic, HII regions of the Sharpless "Sh-2" or Blitz-Stark-Fich "BFS" catalogue. In 31 of those ... -
H₂¹⁸O and H₂¹⁶O in Intermediate Mass Star Formation Regions
(University of Waterloo, 2018-09-20)While the process of low mass (LM) star formation is a well studied area of astrophysics, the formation of high mass (HM) stars is much more complicated. The study of intermediate mass (IM) star formation is expected to ... -
Precision Low Temperature Calorimetry and Susceptibility of Magnetic Pyrochlores
(University of Waterloo, 2018-09-19)Spin-ice models feature the same statistical disorder as water ice, which is identified as the source of zero-point entropy. Gapped topological excitations with properties of monopoles are associated with the violation of ... -
Probing the dark universe with gravitational lensing
(University of Waterloo, 2018-09-17)Since its early success as an experimental test of the theory of general relativity in 1919, gravitational lensing has come a long way and is firmly established as an indispensable element for many astrophysical applications. ... -
Spin-orbit states of neutron wave packets
(American Physical Society, 2016-07-13)We propose amethod to prepare an entangled spin-orbit state between the spin and the orbital angular momenta of a neutron wave packet. This spin-orbit state is created by passing neutrons through the center of a quadrupole ... -
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 ... -
Holography with a neutron interferometer
(The Optical Society, 2016-10-03)We use a Mach-Zehnder interferometer to perform neutron holography of a spiral phase plate. The object beam passes through a spiral phase plate, acquiring the phase twist characteristic of orbital angular momentum states. ... -
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 ... -
Neutron interferometer crystallographic imperfections and gravitationally induced quantum interference measurements
(American Physical Society, 2017-01-25)Dynamical diffraction leads to an interesting, unavoidable set of interference effects for neutron interferometers. This experiment studies the interference signal from two and three successive Bragg diffractions in the ... -
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 ... -
Far-field interference of a neutron white beam and the applications to noninvasive phase-contrast imaging
(American Physical Society, 2017-04-26)The phenomenon of interference plays a crucial role in the field of precision measurement science. Waveparticle duality has expanded the well-known interference effects of electromagnetic waves to massive particles. The ...
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