Novel approaches in quantum sensing and probing atomic-scale quantum transport
Raffi Budakian
Professor, Physics and Astronomy
Institute for Quantum Computing
University of Waterloo
Monday, October 27, 2025
2:30 p.m.
In-person: QNC 0101
Abstract: Progress in measuring and controlling quantum systems is driving transformative advances in both fundamental science and emerging technologies. Our research explores how advanced methods of quantum control can be combined with ultra-sensitive spin detection at the nanometer scale. This combination enables powerful new approaches for probing quantum interactions in solid-state materials and for developing novel quantum sensing modalities.
In this talk, I will highlight two recent results. First, I will introduce the concept of nuclear magnetic resonance diffraction, which provides a direct way to study atomic-scale quantum transport in a crystalline solid containing a network of interacting nuclear spins.
Second, I will present a new quantum sensing approach that employs mechanically detected molecular qubits to measure extremely weak, time-varying magnetic fields. I will conclude by discussing how this capability could open new opportunities for molecular-scale imaging, and more broadly, how such advances may help expand the toolbox of future quantum technologies.