Research Symposium

BIO

Noah Frank is an Undergraduate Honors Physics student with experience in Nuclear Magnetic Resonance (NMR) under Dr. Arneil Reyes and Dr. Rong Cong and Electron Paramagnetic Resonance (EPR) under Dr. Kavipriya Thangavel in the Hill EPR lab. Outside the lab, he enjoys reading and musicals and looks forward to continuing to delve into quantum Physics.

Exploring Qubit Dynamics via Electron Paramagnetic Resonance Spectroscopy

Abstract

The intrinsic spin of an electron generates a magnetic dipole moment, in which it interacts with an external magnetic field. This is the fundamental property that allows spin-based qubits. We achieve a level of coherent control in single molecular magnets, with ligands tuning its magnetic environment for quantum memory. Electron Paramagnetic Resonance (EPR) spectroscopy provides a direct probe of unpaired electron spins, making it uniquely suited for identifying, characterizing, and understanding electron spin - based qubit platforms, as well as their relaxation mechanisms, pathways, and associated intricacies. EPR enables the direct extraction of key spin-Hamiltonian parameters and coherence metrics, such as spin–lattice relaxation times (T1) and coherence time (T2). Coherent spin control is demonstrated through Rabi pulse sequences analyzed from a "rotating frame" that moves with the spin so that we may extract results more clearly. Echo sequences and field sweep measurements evaluate coherence and local geometric and electronic environments. This research is investigating the quantum effects and a means to store information at the molecular level. Metal-organic frameworks provide a tunable and scalable environment for molecular qubits. This research is used for guiding the optimization of molecular design strategies aimed at achieving extended quantum coherence lifetimes. There is a direct translation of the industrial relevance of EPR for qubit development and highlights MOF-based qubits as a promising future platform for quantum technologies. This can be used in logic gates, long range communications, other sensing applications.

Keywords: EMR Electrons Resonance