Physics & Astronomy Dissertations
Recent Submissions

[20130131] Nonlinear Microscopy for Material Characterization
Making use of femtosecond laser sources, nonlinear microscopy provides access to previously unstudied aspects of materials. By probing third order nonlinear optical signals determined by the nonlinear susceptibility chi(3), ... 
[20130131] Parsecscale properties of gammaray bright blazars
The parsecscale radio properties of blazars detected by the Large Area Telescope (LAT) on board the Fermi Gammaray Space Telescope have been investigated using observations with the Very Long Baseline Array (VLBA). ... 
[20130130] Transport theoretical studies of some microscopic and macroscopic systems
This dissertation is a report on theoretical transport studies of two systems of vastly different sizes. The first topic is electronic motion in quantum wires. In recent years, it has become possible to fabricate wires ... 
[20120828] Indirect detection signals beyond the simplest supersymmetric dark matter
Indirect detection of gamma rays, neutrinos and charged cosmic rays from dark matter annihilation sheds light on the identity of dark matter and compliments direct detection and collider dark matter searches. By testing ... 
[20120828] Development and characterization of a 171Yb+ miniature ion trap frequency standard
This dissertation reports on the development of a lowpower, highstability miniature atomic frequency standard based on 171Yb+ ions. The ions are buffergas cooled and held in a linear quadrupole trap that is integrated ... 
[20120828] Quantum correlations, chaos and information
Quantum chaos is the study of quantum systems whose classical description is chaotic. How does chaos manifest itself in the quantum world? In this spirit, we study the dynamical generation of entanglement as a signature ... 
[20120828] CR geometry and twisting type N vacuum solutions
In the search for vacuum solutions, with or without the cosmological constant Λ, of the Einstein field equations for Petrov type N with twisting principal null directions, the CR structures, which describe the parameter ... 
[20120828] Nonlinear interferometry with BoseEinstein condensates
This dissertation investigates the possibility of using a twomode BoseEinstein condensate (BEC) of N atoms to implement a nonlinear Ramsey interferometer whose detection uncertainty scales better than the optimal 1/N ... 
[20120827] Quantum algorithms, symmetry, and Fourier analysis
I describe the role of symmetry in two quantum algorithms, with a focus on how that symmetry is made manifest by the Fourier transform. The Fourier transform can be considered in a wider context than the familiar one of ... 
[20120827] Faulttolerance in twodimensional topological systems
This thesis is a collection of ideas with the general goal of building, at least in the abstract, a local faulttolerant quantum computer. The connection between quantum information and topology has proven to be an ... 
[20120706] Search for physics beyond the standard model in the trilepton signature in pbarp collisions at sqrt s = 1.96 TeV with CDF II
The standard model (SM) of particles and fields is a theory that has proven very accurate in the currently accessible collider energies. Nonetheless, the SM is theoretically incomplete in the sense that it leaves many ... 
[20120706] Dynamics and distribution of immunoglobolin E receptors : a dialog between experiment and theory
This dissertation explores the dynamics and distribution of immunoglobulin E receptors (FceRI) on mast cells by drawing on the techniques of experimental and theoretical physics. The motivation for these investigations is ... 
[20120705] Development of planar and 3D silicon sensor technologies for the ATLAS experiment upgrades and measurements of heavy quark production fractions with fully reconstructed Dstar mesons with ATLAS
Several particle detector technologies were studied. These include measurements of the leakage current and capacitance of irradiated planar and 3D sensors. The interelectrode capacitance of proton irradiated 3D sensors ... 
[20110831] Early stages of radio galaxy evolution
Though active galaxies have been studied since the inception of radio astronomy, there remain several large gaps in our understanding. Chief among these, is how the jets possessed by the radio loud variety are ignited. A ... 
[20110831] Two pulse per cavity lasers and their applications
Lasers have been around now for over 50 years. Initially it was said that it is an invention without an application. Since then it turned out that lasers are valuable tools for applications like mapping atomic transitions ... 
[20110825] A theoretical and experimental analysis of SBS suppression through modification of amplifier seed
Theoretical and experimental investigations of stimulated Brillouin scattering (SBS) are conducted in Ybdoped fiber amplifiers when the amplifier is simultaneously seeded with multiple distinct frequencies or with a phase ... 
[20110702] Experimental protocols for and studies of the effects of surface passivation and water isotopes on the gliding speed of microtubules propelled by kinesin1
This dissertation explores how the kinesin1 and microtubule system is affected by surface passivation and water isotopes. Surface passivation was found to affect the gliding speed that microtubules exhibit in the ... 
[20110702] High redshift QSOs and cool dwarfs in the Deep Lens Survey
The Deep Lens Survey, a 20 deg2 optical survey, was used to search for two types of rare, very red objects: faint highredshift (z > 5.4) quasars, which trace structure formation in the early Universe and can be used to ... 
[20110702] Microwave techniques and applications for semiconductor quantum dot modelocked lasers
Semiconductor modelocked lasers (MLLs) are important as compact and costeffective sources of picosecond or subpicosecond optical pulses with moderate peak powers. They have potential use in various fields including ... 
[20110702] Coherent control of collective atomic spins
In this thesis I explore the use of collective spin angular momentum as a platform for quantum information processing. Such systems have several nice features that make them excellent choices for such protocols, especially ...