Journal
PHYSICAL REVIEW APPLIED
Volume 6, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.6.011001
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Funding
- National Science Foundation [1506473]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1506473] Funding Source: National Science Foundation
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Scaling beyond two-node quantum networks using nitrogen-vacancy (NV) centers in diamond is limited by the low probability of collecting zero-phonon-line (ZPL) photons from single centers. Here, we demonstrate GaP-on-diamond disk resonators which resonantly couple ZPL photons from single NV centers to single-mode waveguides. In these devices, the probability of a single NV center emitting a ZPL photon into the waveguide mode after optical excitation can reach 9%, due to a combination of resonant enhancement of the ZPL emission and efficient coupling between the resonator and waveguide. We verify the single-photon nature of the emission and experimentally demonstrate both high in-waveguide photon numbers and substantial Purcell enhancement for a set of devices. These devices may enable scalable integrated quantum networks based on NV centers.
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