Nanoelectromechanical Control of Spin–Photon Interfaces in a Hybrid Quantum System on Chip
Genevieve Clark, Hamza Raniwala, Matthew Koppa, Kevin C. Chen, Andrew Leenheer, Matthew Zimmermann, Mark Dong, Linsen Li, Y. Henry Wen, Daniel Domı́nguez, Matthew E. Trusheim, Gerald Gilbert, Matt Eichenfield, Dirk Englund
Abstract
Color centers (CCs) in nanostructured diamond are promising for optically linked quantum technologies. Scaling to useful applications motivates architectures meeting the following criteria: C1 individual optical addressing of spin qubits; C2 frequency tuning of spin-dependent optical transitions; C3 coherent spin control; C4 active photon routing; C5 scalable manufacturability; and C6 low on-chip power dissipation for cryogenic operations. Here, we introduce an architecture that simultaneously achieves C1-C6. We realize piezoelectric strain control of diamond waveguide-coupled tin vacancy centers with ultralow power dissipation necessary. The DC response of our device allows emitter transition tuning by over 20 GHz, combined with low-power AC control. We show acoustic spin resonance of integrated tin vacancy spins and estimate single-phonon coupling rates over 1 kHz in the resolved sideband regime. Combined with high-speed optical routing, our work opens a path to scalable single-qubit control with optically mediated entangling gates.