Current Projects
QAOA Protein Groups
Protein–protein interaction (PPI) networks represent proteins as nodes and functional associations as edges, and densely connected groups within them, called communities, often correspond to shared biological function. Community detection is commonly posed as modularity maximization, which is NP-hard, so practical analyses rely on heuristics such... read more
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Sparsification and Dimensionality Reduction of Portfolio Optimization QUBOs with QAOA
Our project began with a simple question: if some covariances between stocks are very small, do we need to keep all of them when optimizing a portfolio? In a quantum circuit, retaining a pairwise interaction can add gates. Removing enough interactions might make the calculation easier, but it could also change which stocks are selected. We want ... read more
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Rydberg Atoms and Quantum Scar States
Researching Rydberg Atoms and Quantum Scar States with our mentor, Dr. Tianci Zhou from Virginia Tech's Center for Quantum Information Science and Engineering.
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2D Thermal Mapping of a Microchip Using Nitrogen-Vacancy Centers in Diamond
Introduction:
Infrared sensors are currently the most popular method for industrial temperature mapping, but they have limitations when applied to complex materials and micrometer-level scales. For example, infrared wavelengths can range from 0.7μm to 20μm. In addition, factors such as the emissivity of a material, as well as changes in ambie... read more
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Optimization of an NV-Diamond CW-ODMR Magnetometer for Sentinel Lymph Node Detection
NV diamonds has shown great promise in the field of sensing and navigation due to their high sensitivity to small changes in magnetic fields. Its incorporation into magnetometers is favorable due to its functionality at room temperature and ability to be made into a small size. One crystal structure consists of a vacancy and the replacement of a ca... read more
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Quantum-Optimized Reconstruction of Ketone Dynamics from Fabry-Pérot Optical Breath Measurements
Introduction: Diabetes management depends on measurements that are often invasive, intermittent, or expensive. Acetone in exhaled breath is linked to ketone metabolism and can be measured optically, but a breath spectrum is not itself a metabolic state: the clinically meaningful quantities—blood β-hydroxybutyrate (BHB), acetoacetate, acetone, and t... read more
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Optimizing Quantum State Transfer in Sparse Networks
A quantum network can be modeled as a graph, with vertices representing sites that can hold an excitation and edges representing couplings between those sites. An excitation may be spread across several sites in a superposition. As the state evolves, probability amplitudes combine through interference, changing where the excitation is likely to ... read more
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YBCO Superconductor with Intercalated Calcium
Superconductors show promising applications in future electric grids in that they are capable of conducting electricity with zero resistance. Thus, they have the potential to massively increase the efficiency of current flow, which is applicable to commercial power grids and EV chargers. However, currently discovered superconductors exhibit super... read more
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Optimizing Angular Multiplexing for Holograph Data Storage
Holographic data storage involves storing many two-dimensional images inside a certain volume filled with photopolymer by slightly tilting the reference beam. It presents a good alternative to hard drives, as it offers both high capacity and access rates. One of the main techniques this is achieved by is angular multiplexing. Conventional angula... read more
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On the Efficacy of Solving the Poisson Equation through a QPINN
Physics-informed neural networks (PINNs) solve differential equations by training a neural net- work while penalizing violations of the governing equation and boundary conditions in the loss function [1]. Quantum physics-informed neural networks (QPINNs) extend this idea by embedding a parameterized quantum circuit within part of the classical n... read more
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Shrinking Quantum Key Distribution onto a Chip
Quantum key distribution (QKD) allows two parties to establish a shared secret key while detecting whether an eavesdropper has intercepted the communication. In the BB84 protocol, information is encoded using four quantum states divided between two measurement bases. Because measuring a quantum state can disturb it, an eavesdropper attempting to in... read more
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A Tense Dinner: Quantizing the Prisoner's Dilemma and its Variants
Game theory is a field of applied mathematics that models interactions between independent agents, called players, in games of strategy. Game theory analyzes each player’s choices and its impact on both the overall game and every other player’s choices [1]. One of the most studied games in game theory is the Prisoner’s Dilemma [1]. In the classi... read more
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The Design and Construction of a Rubidium Magneto-Optical Trap
A magneto-optical trap (MOT) cools atoms to microkelvin range temperatures by trapping atoms within perpendicular laser beams and varying magnetic fields [1]. A MOT uses opposing photon emission and absorption to reduce an atom’s speed, consequently reducing its temperature. By combining this with a magnetic field, the MOT works to trap an atom ... read more
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Rb Optically Pumped Magnetometry
Deception can produce involuntary and measurable changes in cardiovascular response. For example, significant differences in heart rate have been found when comparing truthful and deceptive responses (Godert et al. 2001). Atomic magnetometers can achieve subfemtotesla sensitivity to magnetic fields without the cryogenic cooling required by supercon... read more
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Uncertainty-Aware Neural Decoding for Surface-Code Quantum Error Correction
1 Introduction:
Quantum computers must detect and correct physical errors without directly measuring the encoded quantum state. Surface codes address this problem by repeatedly measuring local stabilizers on a two-dimensional qubit lattice. Changes in those measurements, called detection events, reveal where an error may have occurred, but th... read more
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Quantum Input Selection for Cardiac MRI
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Electronic State Structure Near Cytosine Conical Intersections
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Rydberg atom reservoir learning
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Free-Space Model of Photonic Chip Meshes
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Quantum Agents for Diabetic Retinopathy
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Connectivity in the Brain and Loss of Information
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