Lonฤar's Laboratory for Nanoscale Optics engineers diamond and lithium-niobate nanophotonic devices โ including silicon-vacancy (SiV) color-center spin-photon interfaces, entangled quantum memories, and remote entanglement-assisted phase-sensing protocols that beat the standard measurement limit โ alongside quantum optomechanical control of single spins via engineered acoustic resonators, directly extending the NV/SiV-diamond quantum-sensing lineage toward chip-integrated, networked quantum-enhanced sensing.