Browsing Physics and Astronomy by Title
Now showing items 727-746 of 767
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Transition to light-like trajectories in thin shell dynamics
(Elsevier, 2018-11)It was recently shown that a massive thin shell that is sandwiched between a flat interior and an exterior geometry given by the outgoing Vaidya metric becomes null in a finite proper time. We investigate this transition ... -
Tunable Coupler in Superconducting Circuits and Impedance Engineering for Josephson Parametric Amplifier
(University of Waterloo, 2020-09-04)In this thesis, we study two topics on superconducting circuits. The first topic is the tunable coupler for resonators. This coupler is implemented with a superconducting circuit coupling with resonators in the dispersive ... -
Tunable three-body interactions between superconducting flux qubits for quantum annealing
(University of Waterloo, 2019-09-03)The field of quantum information has been a fast growing field of research in the last few decades. The reason for this development is the potentially immense power of quantum computers, capable of solving hard problems ... -
Tunable Two-Color Ultrafast Yb:Fiber Chirped Pulse Amplifier: Modeling, Experiment, and Application in Tunable Short-Pulse Mid-Infrared Generation
(University of Waterloo, 2013-10-04)In this thesis, I have developed a tunable two-color two-stage ultrafast Yb:fiber chirped pulse amplifier for the generation of short-pulse mid-infrared (MIR) radiation in the long-wavelength side of the "molecular ... -
Tuneable Hybrid and Multimode Squeezed States of Light
(University of Waterloo, 2020-09-03)Gaussian quantum states of light have many applications in quantum technologies. Two of the most widely used Gaussian quantum states of light are the single- and two-mode squeezed states. In this thesis, we propose the ... -
Tunnel Ionization in Strong Fields in atoms and molecules and its applications
(University of Waterloo, 2011-04-26)We look at the theory of ionization of atoms and molecules in the presence of a strong laser field. The history of ionization of atoms is reviewed and the methods used to calculate the ionization rates are examined in ... -
Tunneling Transport and Spectroscopy of Two-Dimensional Magnetic Materials
(University of Waterloo, 2022-08-24)The recent discoveries of magnetism in the single atomic layer have opened up a new direction for two-dimensional (2D) materials research. In this thesis, two types of magnetic materials are investigated: chromium trihalides ... -
Twisted Holography: The Examples of 4d and 5d Chern-Simons Theories
(University of Waterloo, 2022-09-29)Twisted holography is a duality between a twisted supergravity, and a twisted supersymmetric gauge theory living on the D-branes in the supergravity. The main objectives of this duality is the comparison between the algebra ... -
Two-Color Chirped-Pulse Amplification Fiber Amplifier, for Mid-Infrared Generation
(University of Waterloo, 2010-01-22)The goal of this thesis is developing a two-color Ytterbium (Yb) fiber amplifier system that can be used for generation of mid-infrared radiation. Previously, our group reported generating 20 µW of average power, at a ... -
Two-Color Ultrafast Yb:Fiber Chirped Pulse Amplifier for Mid-Infrared Generation and Sensitive Mid-Infrared Detector Based on Extreme Non-Degenerate Two Photon Absorption in GaAs
(University of Waterloo, 2014-09-12)This thesis outlines the development and optimization of a two-color three-stage ultrafast Yb:fiber chirped pulse amplifier for the generation of mid-infrared (MIR) radiation and a novel sensitive mid-infrared detector by ... -
Two-Colour Nonlinear Amplification for Mid-infrared Generation by Difference Frequency Generation
(University of Waterloo, 2024-01-16)In this thesis, I discuss the development of a two-colour laser system which uses an all-normal dispersion fiber laser in combination with a gain-managed nonlinear amplifier as its broadband source. The goal is to develop ... -
Ultra Low Dissipation Silicon Nanowire Resonator Arrays for Scanning Probe Applications
(University of Waterloo, 2020-01-23)This work describes the fabrication and characterization of silicon nanowire oscillators for use in ultra-high sensitivity force detection. These structures are optimized for use as scanning probes by fabricating ... -
Ultra-Cold CsLi Molecules as a Platform for Quantum Information Processing
(University of Waterloo, 2022-12-19)Despite their proposal 40 years ago, quantum computers are still in their infancy, with a panoply of various systems demonstrated as potential methods of quantum information processing. Rydberg atoms are a leading platform, ... -
Ultra-low temperature dilatometry
(University of Waterloo, 2010-10-28)This thesis presents research of two novel magnetic materials, LiHoF4 and Tb2Ti2O7. Experiments were performed at low temperatures and in an applied magnetic field to study thermal expansion and magnetostriction using a ... -
Ultrafast coincidence characteristics of entangled photons towards entangled two-photon absorption
(University of Waterloo, 2014-01-28)Nonlinear optics has had extensive application into a vast array of scientific fields. One such nonlinear process, two-photon absorption (TPA), has had a wildly successful adoption into the field of biological imaging and ... -
Ultrafast Imaging of Molecular Processes in Small Molecules Using Coulomb Explosion Imaging
(University of Waterloo, 2017-09-27)Molecular structure and dynamics of three molecules (carbonyl sulfide, acetylene, and ethylene) are examined using various implementations of the Coulomb Explosion Imaging technique. Soft x-rays from the Canadian Light ... -
Ultrafast manipulation of single photons using dispersion and sum-frequency generation
(University of Waterloo, 2016-12-01)Single photons provide a natural platform for quantum communication and quantum networking, as they can be entangled in many degrees of freedom and maintain coherence over long-distance links. However, while their minimal ... -
Ultrafast Metrology in the Quantum Domain
(University of Waterloo, 2019-02-15)Single photons are a natural platform for quantum technologies as they support entanglement in many degrees of freedom and are inherently well protected from a detrimental type of noise called decoherence. In order to ... -
An Ultrafast Source of Polarization Entangled Photon Pairs based on a Sagnac Interferometer
(University of Waterloo, 2009-01-26)This thesis describes the design, development, and implementation of a pulsed source of polarization-entangled photons using spontaneous parametric down-conversion in a Sagnac interferometer. A tangle of 0.9286 ± 0.0015, ... -
Ultrahigh Resolution Optical Coherence Tomography for Non-invasive Imaging of Outer Retina Degeneration in Rat Retina
(University of Waterloo, 2013-02-22)This project initiated with the aim for improving the ultrahigh resolution optical coherence tomography (UHR-OCT) system performance by considering the limitations to the axial OCT resolution for in vivo imaging of human ...