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Fluctuation-induced frictional effects on atoms and nanoparticles
(2023-08)
Fluctuations can cause extraordinary effects on atoms and nanoparticles. For example, a neutral but polarizable particle sitting close to a planar surface feels an attraction force towards the surface. This is the well-known ...
Searches For Heavy Resonances In The $R \rightarrow WW \rightarrow \ell\nu\ell\nu$ Decay Channel Using $pp$ Collisions At $\sqrt{s}$ = 13 TeV With The ATLAS Detector At The LHC
(2020-08)
This thesis presents a search for a heavy Higgs-like resonance decaying in the $R \rightarrow WW^{*} \rightarrow \ell\nu\ell\nu$ channel using the ATLAS detector at the Large Hadron Collider. The search uses proton-proton ...
Observation of the triboson process pp → W±W∓γ and limits on anomalous quartic gauge couplings with the ATLAS detector
(2023-05-12)
This thesis presents a search for evidence of $W^\pm W^\mp \gamma$ production from $p-p$ scattering with $\sqrt{s}$ = 13 TeV at the Large Hadron Collider using 140 fb$^-1$ of integrated luminosity. The case where the $W$ ...
Spotting clusters, hunting for planets: a combined study of galaxy clusters in the X-ray and optical regime
(2022-08)
Observational studies of the distribution of galaxies in the Universe reveal inhomogeneity and structure on Mpc and larger scales. Galaxy clusters are the largest gravitationally bound structures containing a virialized ...
Spin-mixing and Interferometry in Microwave-dressed Sodium Spinor Bose-Einstein Condensates
(2022-12-01)
This thesis presents my research on spin-mixing and interferometry in an all-optically generated spinor Bose-Einstein condensate (BEC) of sodium atoms. The sodium atoms are loaded from a magneto-optical trap into a crossed ...
Quantifying the Physics and Energetics of Iron Low-Ionization Broad Absorption-Line Quasar Outflows
(2022)
Quasars are among the most luminous and massive objects in the universe. They host an actively accreting supermassive black hole (SMBH) at their centre that can power energetic phenomena that outshine the host galaxy. A ...
Intervalley Scattering in III-V Heterostructures and its Application to Valley Photovoltaic Hot Carrier Solar Cells
(2022-12-16)
The efficiency limit of 33% for a single gap solar cell is not fundamental. Mitigation of thermalization losses which occur when high energy ‘hot’ carriers are only extracted at the same energy as low energy carriers is a ...
Space Application of Novel Solar Cells
(2023-05-12)
Multiple solar cell technologies from three different generations of photovoltaic cells were studied for space applications. The GaAsSb, crystalline first-generation solar cells were studied under low-intensity-low-temperature ...
Interaction Effects in Quantum Wires and One-Dimensional Incoherent Semimetals
(2022-08-04)
In this thesis, we address the effect of interactions in low dimensional
systems. In the first part, using bosonization, we study a microscopic
model of parallel quantum wires constructed from two dimensional Dirac
fermions ...
Generation and Control of Atomic Resonant Squeezed Light
(2022-05)
Quantum metrology is a new emerging technology studying of extreme sensitive and high resolution measurement based on quantum mechanical principles such as quantum entanglement and squeezing, which can potentially revolutionize ...