Browsing Theses by Title
Now showing items 1004310062 of 13304

Quantum Computation with Superconducting Parametric Cavity
(University of Waterloo, 20201214)Multimode superconducting parametric cavity is a flexible platform that has been used to study a variety of topics in microwave quantum optics ranging from parametric amplification, entanglement generation to higher order ... 
Quantum Cost Models for Cryptanalysis of Isogenies
(University of Waterloo, 20190501)Isogenybased cryptography uses keys large enough to resist a farfuture attack from Tani’s algorithm, a quantum random walk on Johnson graphs. The key size is based on an analysis in the query model. Queries do not ... 
Quantum critical responses via holographic models and conformal perturbation theory
(University of Waterloo, 20170615)We investigate response functions near quantum critical points, allowing for finite temperature and a mild deformation by a relevant scalar. When the quantum critical point is described by a conformal field theory, we use ... 
Quantum dot devices in silicon and dopantfree GaAs/AlGaAs heterostructures
(University of Waterloo, 20210129)Single spin quantum dot qubits in silicon are a promising candidate for a scalable quantum processor due to their long coherence times, compact size, and ease of integration into existing fabrication technologies. Realizing ... 
Quantum Dots for Intermediate Band in Solar Cells
(University of Waterloo, 20130125)The commercially available solar cells suffer from low efficiency and high cost. This would avoid presence of solar cells as a secure energy resource in the market. Problems stem from two facts. Firstly, band gap of materials ... 
Quantum Dynamics and Statistical Mechanics of Endohedral Water
(University of Waterloo, 20160907)Since first being synthesized in 2011,H2O@C60 has attracted much attention in the literature. Many interesting quantum phenomena are associated with this system, including orthopara conversion, rotational ground state ... 
Quantum effects in molecular systems
(University of Waterloo, 20140818)This thesis presents two different approaches and applications where nuclear dynamics are treated quantum mechanically in order to obtain more accurate theoretical predictions of molecular properties. In our first application, ... 
Quantum experiments with singlephoton spinorbit lattice arrays
(University of Waterloo, 20190919)The thesis introduces two singlephoton experiments with the lattice of spinorbit arrays. The basic background knowledge has been introduced in Chapter 1. Chapters 24 describe the detailed techniques used in these two ... 
Quantum Field Theory: Motivating the Axiom of Microcausality
(University of Waterloo, 20120919)Axiomatic quantum field theory is one approach to the project of merging the special theory of relativity with that of ordinary quantum mechanics. The project begins with the postulation of a set of axioms. Axioms should ... 
Quantum fields and machine learning
(University of Waterloo, 20200925)In this thesis, we use detector models to study various properties of quantum fields. One such property is the correlations present in fields. It is known that two uncorrelated detectors, upon coupling to a quantum field, ... 
Quantum Gates and Decoupling in Qubits with Fixed Transverse Coupling
(University of Waterloo, 20170525)Among all the quantum computer candidates, the superconducting system is one of the most convincing platforms due to its strong couplings and scalability. To be more specific, this thesis focuses on the superconducting ... 
Quantum Gravity Renormalization Group
(University of Waterloo, 20200727)Investigations relating the emergence of the radial direction in the holography, solvable irrelevant deformations of conformal eld theories and holographic entanglement entropy are reported. Emphasis is laid on how ... 
Quantum groundstates of the spin1/2 XXZ model on a fullyfrustrated honeycomb lattice
(University of Waterloo, 20101001)In this thesis we present results from quantum Monte Carlo for the fullyfrustrated honeycomb lattice. The XXZ model is of interest in the classical limit, as there is a mapping between the classical fullyfrustrated ... 
Quantum Hacking in the Age of MeasurementDeviceIndependent Quantum Cryptography
(University of Waterloo, 20180413)Cryptography is essential for secure communication in the digital era. Today, publickey cryptography is widely employed, and has provided an efficient method for encrypting content and ensuring both confidentiality and ... 
Quantum Indefinite Spacetime: Part II
(University of Waterloo, 20180910)We adopt an operational mode of thinking to study spacetime fluctuations and their impacts on questions of quantum gravity. Particular emphasis is put on studying causal structure fluctuations. The study is guided by the ... 
Quantum independence and chromatic numbers
(University of Waterloo, 20190828)In this thesis we are studying the cases when quantum independence and quantum chromatic numbers coincide with or differ from their classical counterparts. Knowing about the relation of chromatic numbers separation to the ... 
Quantum Information across Spacetime: From Gravitational Waves to Spinning Black Holes
(University of Waterloo, 20210820)This thesis is split into two parts. In the first part, we investigate BoseEinstein condensates (BECs) as a means to detect gravitational waves. For the detection of continuous gravitational waves, we study its sensitivity ... 
Quantum Information and Variants of Interactive Proof Systems
(University of Waterloo, 20110824)For nearly three decades, the model of interactive proof systems and its variants have been central to many important and exciting developments in computational complexity theory such as exact characterization of some well ... 
Quantum Information Enabled Neutron Interferometry
(University of Waterloo, 20170612)Neutron interferometry with its ability to encode and extract information provides a test bed for quantum mechanics and precise measurement of physical quantities of significant importance in physics. However, this ... 
Quantum Information Processing with Adversarial Devices
(University of Waterloo, 20100609)We consider several applications in blackbox quantum computation in which untrusted physical quantum devices are connected together to produce an experiment. By examining the outcome statistics of such an experiment, and ...