Issue 40, 2022

Coupling spin defects in hexagonal boron nitride to titanium dioxide ring resonators

Abstract

Spin-dependent optical transitions are attractive for a plethora of applications in quantum technologies. Here we report on utilization of high quality ring resonators fabricated from TiO2 to enhance the emission from negatively charged boron vacancies (VB) in hexagonal Boron Nitride. We show that the emission from these defects can efficiently couple into the whispering gallery modes of the ring resonators. Optically coupled VB showed photoluminescence contrast in optically detected magnetic resonance signals from the hybrid coupled devices. Our results demonstrate a practical method for integration of spin defects in 2D materials with dielectric resonators which is a promising platform for quantum technologies.

Graphical abstract: Coupling spin defects in hexagonal boron nitride to titanium dioxide ring resonators

Supplementary files

Article information

Article type
Paper
Submitted
08 May 2022
Accepted
30 Aug 2022
First published
30 Aug 2022

Nanoscale, 2022,14, 14950-14955

Author version available

Coupling spin defects in hexagonal boron nitride to titanium dioxide ring resonators

M. Nonahal, C. Li, F. Tjiptoharsono, L. Ding, C. Stewart, J. Scott, M. Toth, S. T. Ha, M. Kianinia and I. Aharonovich, Nanoscale, 2022, 14, 14950 DOI: 10.1039/D2NR02522A

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