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

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/5.0051675· OSTI ID:1853615
 [1];  [2];  [3];  [3];  [4];  [5];  [4];  [3]
  1. Harvard University, Cambridge, MA (United States). John A. Paulson School of Engineering and Applied Sciences; Harvard Univ., Cambridge, MA (United States)
  2. Harvard University, Cambridge, MA (United States). John A. Paulson School of Engineering and Applied Sciences; Delft University of Technology, PO Box 5046, 2600 GA Delft, (The Netherlands). QuTech
  3. Harvard University, Cambridge, MA (United States). John A. Paulson School of Engineering and Applied Sciences
  4. Friedrich Schiller University of Jena, Max-Wien-Platz, Jena (Germany). Institute of Solid State Physics
  5. The University of Tokyo, Tokyo (Japan). Research Center for Advanced Science and Technology
In this work, 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 ~11000. 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.
Research Organization:
California Institute of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Organization:
Japan Society for the Promotion of Science (JSPS); National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR); US Army Research Office (ARO); USDOE Office of Science (SC)
Grant/Contract Number:
SC0020376
OSTI ID:
1853615
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 23 Vol. 118; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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