Efficient Extraction of Zero-Phonon-Line Photons from Single Nitrogen-Vacancy Centers in an Integrated GaP-on-Diamond Platform
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2016-07-29 |
| Journal | Physical Review Applied |
| Authors | Michael Gould, Emma R. Schmidgall, Shabnam Dadgostar, Fariba Hatami, KaiāMei C. Fu |
| Institutions | University of Washington, Humboldt-UniversitƤt zu Berlin |
| Citations | 71 |
Abstract
Section titled āAbstractāScaling beyond two-node quantum networks using nitrogen vacancy (NV) centers\nin diamond is limited by the low probability of collecting zero phonon line\n(ZPL) photons from single centers. Here, we demonstrate GaP-on-diamond disk\nresonators which resonantly couple ZPL photons from single NV centers to\nsingle-mode waveguides. In these devices, the probability of a single NV center\nemitting a ZPL photon into the guided waveguide mode after optical excitation\ncan reach 9%, due to a combination of resonant enhancement of the ZPL emission\nand efficient coupling between the resonator and waveguide. We verify the\nsingle-photon nature of the emission and experimentally demonstrate both high\nin-waveguide photon numbers and substantial Purcell enhancement for a set of\ndevices. These devices may enable scalable integrated quantum networks based on\nNV centers.\n