Browsing Physics and Astronomy by Title
Now showing items 707-726 of 768
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Toward a theory of everything
(University of Waterloo, 2023-08-21)A physical theory of everything is supposed to tell us: (1) The dynamical laws for matter and gravity; (2) The boundary condition of the universe; (3) The relation between the theory and experience. I present a personal ... -
Toward Canonical General Relativity in the Loop Gravity Phase Space
(University of Waterloo, 2014-01-07)The continuous, kinematical Hilbert space of loop quantum gravity is built upon a family of spaces $\mathcal{H}_\Gamma$, each associated to a different \textit{graph} $\Gamma$, i.e. a network of interconnected one-dimensional ... -
Toward standardization of Quantum Key Distribution
(University of Waterloo, 2020-09-03)Information security becomes an inseparable part of our everyday life. An encryption method widely used today is public-key encryption. The security of this method is based on a hard to solve mathematical problems against ... -
Toward Ultracold Atoms for Quantum Thermalization Studies
(University of Waterloo, 2023-01-02)Ultracold atoms are a great platform to understand one of the most interesting open problems in physics: quantum thermalization. Building a new lab for ultracold atoms is a challenging task for the various tools that ... -
Towards Analog Quantum Simulations of Dynamical Gauge Theories
(University of Waterloo, 2017-09-20)A system which can implement an analog quantum simulation of lattice gauge theories has been proposed. In particular, the Schwinger model is formulated in terms of a lattice and superconducting qubit implementation is ... -
Towards Dual-Isotope Entangling Gates for Trapped-Ion Quantum Computing
(University of Waterloo, 2022-09-14)Entangling gates are essential to the development in the capabilities of any trapped-ion quantum computer. High-fidelity entangling gates have previously been demonstrated on trapped-ion quantum hardware with single species ... -
Towards InAs nanowire double quantum dots for quantum information processing
(University of Waterloo, 2010-11-03)Currently, a major challenge for solid-state spin qubit systems is achieving one-qubit operations on a timescale shorter than the spin coherence time, T2*, a goal currently two orders of magnitude away. By taking advantage ... -
Towards magnetic force sensing of single molecules using suspended carbon nanotubes
(University of Waterloo, 2014-08-19)Measuring the magnetic moment of a single spin remains an experimental challenge. Measuring such a moment at timescales relevant to relaxation in many small spin systems, even more so. However, such a measurement would ... -
Towards many-body physics with Rydberg-dressed cavity polaritons
(University of Waterloo, 2018-05-23)An exciting frontier in quantum information science is the creation and manipulation of bottom-up quantum systems that are built and controlled one by one. For the past 30 years, we have witnessed signi cant progresses ... -
Towards Maximal Cell Density Predictions for Polymeric Foams
(Elsevier, 2011-10-04)Self-consistent field theory is used to make direct predictions for the maximum possible cell densities for model polymer foam systems without recourse to classical nucleation theory or activation barrier kinetic arguments. ... -
Towards On-demand Generation of Entangled Photons with Quantum Dots
(University of Waterloo, 2020-01-17)The biexciton-exciton cascade in quantum dots (QDs) yields entangled photon pairs, and recent developments in engineering photonic structures around the dot for efficient light extraction and proper control of the ... -
Towards Photonic Chip Integration of an Oscillating Photonic Bell State from a Semiconductor Quantum Dot
(University of Waterloo, 2024-01-18)The demand for entangled photon sources has been growing in all areas of quantum information technologies. However, many modern single-photon sources suffer from fundamental limitations which limit their ability to produce ... -
Towards Practical Hybrid Quantum / Classical Computing
(University of Waterloo, 2020-09-28)Quantum computing is in a critical phase where theoretical schemes and protocols are now being implemented in the real world for the first time. Experimental implementations can help us solidify ideas, and can also complicate ... -
Towards Pulsed Telecom Laser Ablation Loading for an Ytterbium Ion Trap
(University of Waterloo, 2023-10-23)Trapped ion system is a promising platform for quantum computing, with long qubit coherence, high gate and measurement fidelities. To harness the full potential of the trapped ion system, it is imperative to employ an ... -
Towards Real-World Adoption of Quantum Key Distribution using Entangled Photons
(University of Waterloo, 2012-08-21)In order for quantum key distribution (QKD) to move from the lab to widespread adoption, it will need to be compatible with existing infrastructure. To that end, I demonstrate an implementation of QKD with entangled ... -
Towards simulating 2D effects in lattice gauge theories on a quantum computer
(University of Waterloo, 2020-10-26)Quantum Field Theories (QFTs) are the most successful theories for describing nature at its most fundamental level. Despite the fact that QFTs are capable of predicting a wide range of phenomena, obtaining solutions to ... -
Towards vertex renormalization in 4d Spin Foams
(University of Waterloo, 2017-07-24)A long-standing open problem in 4-dimensional Spin Foam models of Quantum Gravity has been the behavior of the amplitudes under coarse graining. In this thesis, we attempt to study this question by using the recent ... -
Tracing galaxy evolution through the reconstruction of their star formation histories
(University of Waterloo, 2023-05-24)This thesis studies the star formation histories (SFHs) of galaxies in order to understand the nature of 'quenching.' The suppression of star formation, i.e., quenching, over the history of the Universe results in a growing ... -
Transfer Cavity Stabilization Using the Pound-Drever-Hall Technique with Noise Cancellation
(University of Waterloo, 2011-01-24)A system for exciting Rubidium atoms to Rydberg states has been constructed to study the interactions between them and metal surfaces. This thesis describes a method to reach the f Rydberg series using diode lasers. Since ... -
Transition Galaxies: The Evolution of Environmental Quenching
(University of Waterloo, 2021-05-28)We study the evolution of environmental quenching using a photometric selection of transition galaxies in GOGREEN- which encompasses clusters between 1<z<1.5 spanning a wide range in halo mass. We split the galaxies in ...