Host: David Hsieh

Title: Quantum Detection and Imaging with Diamond Spins

Solid-state spin qubits, particularly the nitrogen vacancy (NV) center in diamond, pave the way for truly nanoscale imaging of condensed matter and biological systems with sensitivity to unique nuclear spins. Here I discuss our NV-based magnetic imaging experiments applied to condensed matter systems, where we imaged current flow patterns in graphene to reveal the transition from ohmic to dominated flow regimes by electronic collisions. A big challenge to improve the spatial resolution and magnetic sensitivity of NV is to mitigate surface-induced quantum decoherence, which I will discuss in the second part of this talk. Decoherence at interfaces is a universal problem that affects many quantum technologies, but whose microscopic origins still remain unclear. Our studies guide the continued development of quantum control and materials control, toward the ultimate goal of NV-based single nuclear spin imaging.

Registration date: November 10, 2022

Caltech PMA website: http://pma.caltech.edu/​​​​​
Twitter: https://twitter.com/PMACaltech​​​​​

Please take the opportunity to connect and share this video with your friends and family if you find it useful.