- Speaker: Zhou, Brian (Boston College, USA)
Nitrogen-vacancy (NV) centers in diamond represent a forefront platform for secure quantum networks and high-precision sensing. In this talk, I will discuss novel techniques using controlled optical excitation to implement high-speed quantum control and high resolution quantum sensing. Going beyond conventional microwave control of NV center spins, we utilize resonant and near-resonant optical transitions to achieve robust single-qubit operations. We leverage three-level energy structures in the NV spin-orbit optical manifold for holonomic quantum gates and ‘superadiabatic’ state transfer. Finally, I will introduce a new synchronized optical pulse sequence for using the NV center to probe the transport properties of low-dimensional materials. Optical control improves sensitivity and provides high spatiotemporal resolution. These methods are broadly generalizable to other quantum and material systems and highlight the potential of spin-light interactions for emerging applications.