Coupling of a single tin-vacancy center to a photonic crystal cavity in diamond

Journal article (2021)

Authors

Kazuhiro Kuruma Harvard University
B.J. Pingault Harvard University, QID/Taminiau Lab - QuTech Advanced Research Centre
Cleaven Chia Harvard University
Dylan Renaud Harvard University
Patrick Hoffmann Friedrich Schiller University Jena
Satoshi Iwamoto University of Tokyo
Carsten Ronning Friedrich Schiller University Jena
Marko Lončar Harvard University
Research Group
QID/Taminiau Lab (QuTech Advanced Research Centre) (TU Delft)
Copyright: © 2021 Kazuhiro Kuruma, B.J. Pingault, Cleaven Chia, Dylan Renaud, Patrick Hoffmann, Satoshi Iwamoto, Carsten Ronning, Marko Lončar
DOI: https://doi.org/10.1063/5.0051675
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Published Date

2021

Language

English

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Faculty

QuTech Advanced Research Centre

Department

Quantum Internet Division

Research Group

QID/Taminiau Lab

Abstract

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.

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- Embargo expired in 10-06-2022