This collection contains some of the theses and dissertations produced by students in the University of Oregon Physics Graduate Program. Paper copies of these and other dissertations and theses are available through the UO Libraries.
For well over a century, neuroscientists have been studying the inherent ties between neuronal morphology and functionality. Santiago Ramón y Cajal, in his work that ultimately awarded him a Nobel Prize in 1906, established ...
The global market for power solely for data center usage is estimated to be $12.4 billion by 2027[1]. In 2021, data center electricity consumption was ∼400 TW h, representing almost 2% of the global energy demand[2]. Ongoing ...
This dissertation presents two searches for signals of dark matter in an integrated luminosity of 139 ifb of proton-proton collision data collected at a center of mass energy of $\sqrt{s}$ = 13 TeV with the ATLAS detector ...
Silicon vacancy centers (SiVs) in diamond are local defects in the diamond lattice that behave as atomic-like systems with electronic energy levels and optical transitions. The SiV's optical properties and long spin ...
We investigate the role of time-frequency entanglement in nonlinear interactions of both low- and high-gain broadband squeezed vacuum. Our work is motivated by the large body of research proposing the use of time-frequency ...
In this dissertation we study the interaction of a single atom with a single mode of the electromagnetic field in an optical cavity. We emphasize strong coupling conditions, where the dipole coupling strength is larger ...
Sundarraman, Deepika(University of Oregon, 2022-10-26)
Animal intestines harbor hundreds of microbial species that play a crucial role in host health and development. Despite their importance, many questions about the rules that govern community assembly in these complex ...
Nguyen, Philippe(University of Oregon, 2022-10-26)
This dissertation describes methods used for characterizing the sources and effects of environmental noise in Advanced LIGO detectors from the end of the second LIGO-Virgo observing run through the end of the third observing ...
Kilgallon, Aaron(University of Oregon, 2022-10-26)
A search for emerging jets in the dijet topology is presented here using 139 ifb of √s = 13 TeV Run 2 ATLAS proton-proton collision data. Emerging jets constitute a class of dark jet models that have long-lived hadronization ...
The search for physics beyond the Standard Model is a daunting task. As parameter spaces for compelling models shrink, there is motivation for more radical concepts. However, there is a need for understanding the structure ...
Quantum sensing utilizes the sensitivity of a quantum system to a given physical quantity in order to derive an estimate for that physical quantity. Nitrogen vacancy (NV) centers in diamond have emerged as a popular quantum ...
Brunnenmeyer, Trevor(University of Oregon, 2022-10-04)
Galaxies are not closed systems but are constantly interacting with their environment which generally contains a) other nearby galaxies and b) some form of warm gaseous medium existing between galaxies (known as the ...
Istrate, Nicolae(University of Oregon, 2022-10-04)
The temporal activity of many biological systems, including neural circuits, exhibits fluctuations simultaneously varying over a large range of timescales. The mechanisms leading to this temporal heterogeneity are yet ...
Quantum-enhanced electron imaging promises highly efficient, low-damage transmission electron microscopy, transforming high-resolution imaging of samples affected by beam irradiation. One proposed quantum protocol for ...
Merkouche, Sofiane(University of Oregon, 2022-10-04)
Quantum entanglement is arguably the one feature that decisively distinguishes quantum from classical physics, and thus plays a crucial role both in understanding the fundamental nature of reality, and in providing advantages ...
While it is well known that transport equations may be derived diagrammatically, both this approach and that of Boltzmann inevitably encounter an integral equation that both is difficult to solve and, for the most part, ...
This dissertation marks a significant step forward in fully understanding glasses and jammed materials as we unify the concept of marginality in amorphous systems, definitively resolve the jamming threshold problem, create ...
Force networks are an essential element to understanding the behaviors of jammed packings. As such, the Force Network Ensemble was formulated to describe the space of all possible force networks for a packing. In this work ...
Fully quantum mechanical models for device models of single photon detectors have recently been developed. Detection of single/few photons in both inanimate devices and biological eyes have the universal structure of ...
Tumblin, Rebecka(University of Oregon, 2021-11-23)
The nonlinear evolution of three-dimensional protostars surrounded by circumstellar disks are numerically investigated to
understand the conditions under which short-period binary star systems could form and
to probe ...