A tunable waveguide-coupled cavity design for scalable interfaces to solid-state quantum emitters
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2017-03-31 |
| Journal | APL Photonics |
| Authors | Sara Mouradian, Dirk Englund |
| Institutions | Massachusetts Institute of Technology |
| Citations | 17 |
Abstract
Section titled āAbstractāPhotonic nanocavities in diamond have emerged as useful structures for interfacing photons and embedded atomic color centers, such as the nitrogen vacancy center. Here, we present a hybrid nanocavity design that enables (i) a loaded quality factor exceeding 50 000 (unloaded Q>106) with 75% of the enhanced emission collected into an underlying waveguide circuit, (ii) MEMS-based cavity spectral tuning without straining the diamond, and (iii) the use of a diamond waveguide with straight sidewalls to minimize surface defects and charge traps. This system addresses the need for scalable on-chip photonic interfaces to solid-state quantum emitters.