2021/02/23 by Alison E. Rugar, Shahriar Aghaeimeibodi, Daniel Riedel +6 · 1 citation
Physics and Astronomy · #physics.optics #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physrevx.11.031021
published as Phys. Rev. X 11, 031021 (2021)
arxiv created 2021/02/23 · arxiv updated 2021/07/28
The realization of quantum networks critically depends on establishing efficient, coherent light-matter interfaces. Optically active spins in diamond have emerged as promising quantum nodes based on their spin-selective optical transitions, long-lived spin ground states, and potential for integration with nanophotonics. Tin-vacancy (SnV^ \textrm-) centers in diamond are of particular interest because they exhibit narrow-linewidth emission in nanostructures and possess long spin coherence times at temperatures above 1 K. However, a nanophotonic interface for SnV^ \textrm- centers has not yet been realized. Here, we report cavity enhancement of the emission of SnV^ \textrm- centers in diamond. We integrate SnV^ \textrm- centers into one-dimensional photonic crystal resonators and observe a 40-fold increase in emission intensity. The Purcell factor of the coupled system is 25, resulting in channeling of the majority of photons (90%) into the cavity mode. Our results pave the way for the creation of efficient, scalable spin-photon interfaces based on SnV^ \textrm- centers in diamond.