Waveguide-integrated single-crystalline GaP resonators on diamond

Abstract

Large-scale entanglement of nitrogen-vacancy (NV) centers in diamond will require integration of NV centers with optical networks. Toward this goal, we present the fabrication of single-crystalline gallium phosphide (GaP) resonator-waveguide coupled structures on diamond. We demonstrate coupling between 1 μm diameter GaP disk resonators and waveguides with a loaded Q factor of 3,800, and evaluate their potential for efficient photon collection if integrated with single photon emitters. This work opens a path toward scalable NV entanglement in the hybrid GaP/diamond platform, with the potential to integrate on-chip photon collection, switching, and detection for applications in quantum information processing.

9 pages, 5 figures, submitted to Optics Express

References in corpus (8)

• High-fidelity projective readout of a solid-state spin quantum register
• Stark shift control of single optical centers in diamond
• Chip-scale nanofabrication of single spins and spin arrays in diamond
• Engineering shallow spins in diamond with nitrogen delta-doping
• Aluminum nitride as a new material for chip-scale optomechanics and nonlinear optics
• Brokered Graph State Quantum Computing
• Prospects for measurement-based quantum computing with solid state spins
• Coupling of nitrogen-vacancy centers in diamond to a GaP waveguide