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

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 TiO 2 to enhance the emission from negatively charged boron vacancies (V B − ) in hexagonal Boron Nitride. We show t...

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Bibliographic Details
Published in:Nanoscale 2022-10, Vol.14 (4), p.1495-14955
Main Authors: Nonahal, Milad, Li, Chi, Tjiptoharsono, Febiana, Ding, Lu, Stewart, Connor, Scott, John, Toth, Milos, Ha, Son Tung, Kianinia, Mehran, Aharonovich, Igor
Format: Article
Language:English
Subjects:
Boron nitride
Defects
Emission
Magnetic resonance
Photoluminescence
Resonators
Titanium dioxide
Two dimensional materials
Whispering gallery modes
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Summary: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 TiO 2 to enhance the emission from negatively charged boron vacancies (V B − ) 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 V B − 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. Spin defects in hexagonal boron nitride are coupled to microring cavity resonator.
ISSN:2040-3364
2040-3372
DOI:10.1039/d2nr02522a