Degree Date: December, 2018
Fangzhou Zhu's picture
Fangzhou Zhu
Nikhil Padmanabhan
Quantitative Researcher

Citadel LLC

Information Mining in the Large Scale Structure of the universe
The Baryon Acoustic Oscillations signal has been an important tool to study the properties of dark energy. Designing efficient and robust data analysis methods that optimize the extraction of information is crucial to realize the immense potential of current and future galaxy surveys. To achieve this goal, this thesis presents the development and implementation of the 'redshift weighting' (Zhu et al 2015, 2016) and 'BAO emulation', two techniques that promise to increase the... more
Degree Date: May, 2018
Jeremy Cushman's picture
Jeremy Cushman
Karsten Heeger
Software Engineer

Optimus Ride

A search for neutrinoless double-beta decay in tellurium-130 with CUORE
The Cryogenic Underground Observatory for Rare Events (CUORE) is a ton-scale cryogenic experiment designed to search for neutrinoless double-beta decay in tellurium-130. The experiment consists of 988 ultracold tellurium dioxide bolometric crystals, which act as both the double-beta decay sources and detectors, in a close-packed configuration. This dissertation presents a search for neutrinoless double double-beta decay with the first two months of CUORE data. An observation of this decay would... more
Stefan Elrington's picture
Stefan Elrington
Sean Barrett

Boston Consulting Group

Developing new approaches to faster, high-spatial resolution Phosphorus-31 MR imaging of Bone
Magnetic resonance imaging (MRI) is the leading non-invasive imaging technique of soft tissues on anatomical and millimeter scales. In conventional MRI, hydrogen-1 in water and liquid fats are detected; the relatively narrow spectra of these signals are the key feature that enables MR imaging with high-spatial resolution (i.e., sub-mm in each dimension). The broad NMR spectra of solids would be much more difficult to use in MRI, and would ordinarily result in a low spatial resolution image.... more
Yvonne Gao's picture
Yvonne Gao
Robert Schoelkopf

Agency for Science, Technology and Research, Singapore

Multi-cavity Operations in Circuit Quantum Electrodynamics
The eventual success of a quantum computer relies on our ability to robustly initialise, manipulate, and measure quantum bits in presence of the inevitable occurrence of errors. This requires us to encode quantum information redundantly in systems that are suitable for Quantum Error Correction (QEC). One promising implementation is to use three dimensional (3D) superconducting microwave cavities coupled to one or more non-linear ancillae in the circuit quantum electrodynamics (cQED) framework.... more
Ariana Hackenburg's picture
Ariana Hackenburg
Bonnie Fleming
Data Scientist


Measurement of a Neutrino-Induced Charged Current Single Neutral Pion Cross Section at MicroBooNE
Micro Booster Neutrino Experiment (MicroBooNE) is a Liquid Argon Time Projection Chamber (LArTPC) operating in the Booster Neutrino Beamline at Fermi National Accelerator Laboratory. MicroBooNE’s physics goals include studying short basline ν oscillation and performing a suite of ν cross section measurements. Of particular interest to MicroBooNE, and the broader LArTPC community, are electromagnetic showers; these showers are at the heart of searches for νe interactions,... more
Xin Li's picture
Xin Li
Mark Reed
Postdoctoral Associate


Nano-confined interfaces: from artificial ion channels to nanofluidic battery
Nano-confined interfaces have received growing attention in recent years, with a wide range of applications including artificial ion channels, water desalination, osmotic energy conversion, and electrical energy storage. New phenomena occur and new physics is expected when solid-liquid interfaces are under nanoscale confinement. My research projects include divalent ion transport in artificial ion channels and nanofluidic battery for lithium storage. By taking advantage of precision definition... more
Anthony Lollo's picture
Anthony Lollo
Jack Harris
Data Science Manager

Yale School of Public Health

Phase slips in isolated mesoscopic superconducting rings
Phase slips result in many interesting properties of superconducting materials, such as the finite resistance of thin superconducting nanowires, the decay of current in superconducting rings, and the flux periodicity of the critical temperature, Tc, in hollow superconducting cylinders or rings. Though the first experiments were performed in 1961, the goal of observing coherent macroscopic quantum tunneling in uniform superconductors has sparked recent interest in the field.   We present... more
David Meltzer's picture
David Meltzer
David Poland
Postdoctoral Fellow


Topics in the Analytic Bootstrap
In this thesis we explore analytical methods to study conformal field theories (CFTs) in a general number of spacetime dimensions. We first use the lightcone bootstrap to systematically study correlation functions of scalar operators charged under global symmetries. We then generalize existing techniques in the lightcone bootstrap to study four-point functions containing operators with spin. As an application, we observe a close connection between anomalous dimensions of large spin, double-... more
Aleksander Rebane's picture
Aleksander Rebane
Yongli Zhang and James E. Rothman
Postdoctoral Associate

Yale School of Medicine, Department of Cell Biology

Exploring free energy landscapes of SNARE assembly using optical tweezers
Scientists have long sought to understand the working principles of protein machinery. A decisive step towards this goal has been the development of the Gibbs free energy landscape of protein folding. However, measurement of energy landscapes has remained challenging, particularly when folding occurs over one or more intermediates. An important example is soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) complex assembly, in which the energetics and kinetics of... more
Degree Date: December, 2017
Emine Altuntas's picture
Emine Altuntas
David DeMille

Measurement of Nuclear Spin Dependent Parity Violation in 138Ba19F
Parity, one of the three discrete spacetime symmetries of nature is broken by weak interactions. In atomic systems, parity violation is manifested in two ways: nuclear spin independent and spin dependent effects. The former is a relatively large effect that has been measured to better than 1%, whereas the nuclear spin dependent parity violation (NSD-PV) effect is small and remains poorly understood. To date the only nonzero measurement of NSD-PV effects in atoms was made in Cs, but the... more
Jacob Blumoff's picture
Jacob Blumoff
Rob Schoelkopf
Research Scientist

HRL Laboratories

Multiqubit experiments in 3D circuit quantum electrodynamics
Circuit quantum electrodynamics (cQED) is the field of manipulating and measuring quantum electrical circuits. These circuits operate in the microwave regime, allowing use of sophisticated experimental equipment and techniques developed for industry. The nature of these devices allows for very strong interactions, providing interesting and accessible physics in the single-quantum regime. Recently, part of the field has branched from strictly lithographically designed circuits to exploit the... more
Benjamin Brubaker's picture
Benjamin Brubaker
Steve Lamoreaux
NIST NRC Postdoc

JILA (University of Colorado/NIST Boulder)

First Results from the HAYSTAC axion search
The axion is a well-motivated cold dark matter (CDM) candidate first postulated to explain the absence of CP violation in the strong interactions. CDM axions may be detected via their resonant conversion into photons in a “haloscope” detector: a tunable high-Q microwave cavity maintained at cryogenic temperature, immersed a strong magnetic field, and coupled to a low-noise receiver.    This dissertation reports on the design, commissioning, and first operation of the... more
Stephen Horvat's picture
Stephen Horvat
Helen Caines

Measurement of the collision energy dependence of jet-quenching signatures of de-confinement at STAR
Confinement is a phenomenon where quarks and gluons are only found in bound color-neutral states, or hadrons. Experiments at the Brookhaven National Laboratory (BNL) and the European Organization for Nuclear Research (CERN) have measured and published key signatures for the formation of a state of nuclear matter where quarks are temporarily de-confined in the hot, dense aftermath of heavy-ion nuclear collisions at \sqrts\ = 200\,GeV. This de-confined state corresponds to the theoretically... more
Anna Kashkanova's picture
Anna Kashkanova
Jack Harris
Postdoctoral fellow

Max Planck institute for the science of light

Optomechanics with Superfluid Helium
The field of optomechanics studies the interaction between electromagnetic and mechanical degrees of freedom via radiation pressure. This interaction is usually enhanced when both electromagnetic and mechanical degrees of freedom are normal modes of resonators, with the canonical optomechanical system being a cavity in which one mirror is mounted on a spring (thereby constituting a mechanical element). The majority of mechanical elements used in optomechanics to date are solid objects (mirrors... more
David Mason's picture
David Mason
Jack Harris
Postdoctoral Associate

Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark

Dynamical Behavior near Exceptional Points in an Optomechanical System
Coupled mechanical oscillators have long been an archetypical system for understanding eigenmodes and coupled dynamics. But in the last few decades, the study of open systems (i.e. those open to loss or gain) has brought a fresh interest and perspective to such simple systems, revealing a surprisingly rich set of physical phenomena. Specically, it was realized that degeneracies in open systems ('exceptional points', or EPs) possess a non-trivial topology, with interesting implications... more