2021/05/31 by Kazuhiro Kuruma, Benjamin Pingault, Cleaven Chia +6 · 81 citations
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Chemistry #Condensed matter physics #Coupling (piping) #Crystallography #Diamond #Diamond and Carbon-based Materials Research #Force Microscopy Techniques and Applications #Materials science #Metallurgy #Nonlinear Optical Materials Studies #Optics #Optoelectronics #Photonic crystal #Physics #Single crystal #Tin #Vacancy defect #physics.app-ph #physics.optics
paper · pdf · doi:10.1063/5.0051675
published in Applied Physics Letters 118(23) (American Institute of Physics)
openalex publication_date 2021/06/07 · arxiv created 2021/06/11 · arxiv updated 2021/06/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We demonstrate optical coupling between a single tin-vacancy (SnV) center in diamond and a free-standing photonic crystal nanobeam cavity. The cavities are fabricated using quasi-isotropic etching and feature experimentally measured quality factors as high as ∼11 000. We investigate the dependence of a single SnV center's emission by controlling the cavity wavelength using a laser-induced gas desorption technique. Under resonance conditions, we observe an intensity enhancement of the SnV emission by a factor of 12 and a 16-fold reduction of the SnV lifetime. Based on the large enhancement of the SnV emission rate inside the cavity, we estimate the Purcell factor for the SnV zero-phonon line to be 37 and the coupling efficiency of the SnV center to the cavity, the β factor, to be 95%. Our work paves the way for the realization of quantum photonic devices and systems based on efficient photonic interfaces using the SnV color center in diamond.