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

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Cited by in corpus (10)

• Integrated gallium phosphide nonlinear photonics
• Diamond Integrated Quantum Photonics: A Review
• Efficient extraction of zero-phonon-line photons from single nitrogen-vacancy centers in an integrated GaP-on-diamond platform
• Gallium phosphide-on-silicon dioxide photonic devices
• 400%/W second harmonic conversion efficiency in $14\mu \mathrm{m}$-diameter gallium phosphide-on-oxide resonators
• Integrated Single Photon Emitters
• Cavity-Enhanced 2D Material Quantum Emitters Deterministically Integrated with Silicon Nitride Microresonators
• A Large-Scale GaP-on-Diamond Integrated Photonics Platform for NV Center-Based Quantum Information
• Single-Mode Optical Waveguides on Native High-Refractive-Index Substrates
• Review Article: Quantum Nanophotonics in Diamond