Correlated Quantum Jumps

In collaboration with Professor Boris Blinov, I am looking for the presence of correlated photon emission using a linear crystal of barium ions. We designed new methods of determining bright and dark states for each ion and the associated times at which jumps occur. Using these tools, we look for near-simultaneous jumps and calculate the probability that the observed number of near-simultaneous transitions can be explained by random, uncorrelated ion jumps.

Previous works have provided evidence for the presence of correlations in photon emission times within a linear chain of trapped ions, while others have found no such correlations. We hope to finally answer the question as to whether photon emissions from chains of trapped ions are correlated.

Modeling & Simulating Quasar Spectra

With Dr. Ian Sullivan, I am working on a project to correct for atmospheric distortion found in images taken by ground-based telescopes. Refraction is corrected during astrometric calibration, but in the bluer bands, this is insufficient due to differential chromatic refraction (DCR) within a filter passband. DCR stretches the point spread function (PSF) of astronomical sources, causing a differential spread of wavelengths and making them appear to shift position. Since sources have different spectra, the smearing from DCR varies. Our project solves this, providing the first image-based calibration technique, tailored to observing conditions.

Magnetoencephalography (MEG)

Magnetoencephalography (MEG) is a non-invasive technique that allows the measurement of ongoing brain activity. The Institute for Learning & Brain Sciences (I-LABS) at the University of Washington, Seattle is the first brain-imaging center in the world focusing on children.

In collaboration with Professor Samu Taulu, the director of the I-LABS MEG Center, I programmed original algorithms to simulate and analyze MEG data to identify the location of brain currents with a higher level of precision in preparation for new prototype MEG machine.

Quantum Dots

What are quantum dots? Quantum dots, also known as semiconductor nanocrystals, are particles with nanometer-sized diameters that exhibit quantum effects in their size and optical and electronic properties

My research focused on the role of quantum dots in nanotechnology and quantum computing. Specifically, I looked into the design of semiconductor quantum dot qubits and of aluminum gates as well as the role of quantum dots as a form of quantum memory.

Active Galactic Nuclei

In observing the centers of local galaxies, a tight connection has been shown to exist between supermassive black holes (SMBHs) and their host galaxies. Based on numeric simulations of the merging of galaxies, actively accreting supermassive black holes (which are referred to as active galactic nuclei, or AGN) are likely to play a foundational role in the evolution of the galaxies. Therefore, surveys of AGN are becoming an essential component of observational cosmology. My work studied the origins of AGN discovery and classification, and their properties.

Lambda-CDM Cosmology

Lambda cold dark matter, or Lambda-CDM (ΛCDM) is a mathematical parameterization of Big Bang cosmology. It assumes that the universe is composed of ordinary matter, photons, neutrinos, and dark matter. The dark matter (non-relativistic) only interacts gravitationally and dark energy is responsible for the observed acceleration in the Hubble expansion. ΛCDM assumes dark energy takes the corm of a constant vacuum  energy density — Λ. My research focused on studying the roles of dark matter and dark energy in the formation and evolution of our universe.

Overall Structure of the Universe

The patterns of galaxies and matter on scales much larger than individual galaxies or groupings of galaxies are known a the Large Scale Structure (LSS) of the universe. My project focused on the LSS of the universe through its evolution by the Double Dark theory which focuses on the role of dark energy, dark matter, and normal matter in this process. Specifically, I looked into the individual aspects of the universe such as galaxies and interactions between different types of matter to form stars and super-massive black holes.

Simulating & Modeling Proportional Wire Counters

Gas ionization detectors measure the electric pulses induced by radiation between electrodes in a gas-filled chamber. They are characterized by the effects created by different field strengths between the charge-collecting electrodes. The pulse size depends on the field strength and also on the type of radiation that enters the detector volume and creates ions.

In collaboration with Professor David Pengra at the University of Washington, I studied the physics of gaseous ionization detectors and carried out computer modeling and simulations of pulse formation, electron drift and other aspects of their operation.

Diamond Nitrogen-Vacancy Centers

Diamond nitrogen-vacancy (DNV) centers are point defects within the diamond lattice structure where a nitrogen atom sits next to a vacant site within the lattice. They are very stable and have interesting optical properties. Specifically, they can locally detect and measure a number of physical quantities, such as magnetic and electric fields. Since its spin state can be both initialized and read-out optically, DNV centers are important for studying electronic and nuclear spin phenomena at room temperature. My research with Professor Boris Blinov, focused on the role of DNV centers in quantum technologies—computing and sensing—and explored DNV quantum sensing applications such as magnetometry and spectroscopy.