Photophysics of blue quantum emitters in hexagonal boron nitrideShow others and affiliations
2023 (English)In: MATERIALS FOR QUANTUM TECHNOLOGY, ISSN 2633-4356, Vol. 3, no 1, article id 015002Article in journal (Refereed) Published
Abstract [en]
Colour centres in hexagonal boron nitride (hBN) have emerged as intriguing contenders for integrated quantum photonics. In this work, we present a detailed photophysical analysis of hBN single emitters emitting at the blue spectral range. The emitters are fabricated by different electron beam irradiation and annealing conditions and exhibit narrow-band luminescence centred at 436 nm. Photon statistics as well as rigorous photodynamics analysis unveils potential level structure of the emitters, which suggests lack of a metastable state, supported by a theoretical analysis. The potential defect can have an electronic structure with fully occupied defect state in the lower half of the hBN band gap and empty defect state in the upper half of the band gap. Overall, our results are important to understand the photophysical properties of the emerging family of blue quantum emitters in hBN as potential sources for scalable quantum photonic applications.
Place, publisher, year, edition, pages
IOP Publishing Ltd , 2023. Vol. 3, no 1, article id 015002
Keywords [en]
photophysics; quantum; emitters; hexagonal; boron nitride
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-198879DOI: 10.1088/2633-4356/acb87fISI: 001078605000001OAI: oai:DiVA.org:liu-198879DiVA, id: diva2:1809223
Note
Funding Agencies|This work is supported by the Australian Research Council (CE200100010, FT220100053) and the Office of Naval Research Global (N62909-22-1-2028). The authors thank the ANFF node of UTS for access to facilities. V I acknowledges support from the National Res [CE200100010, FT220100053]; Australian Research Council [N62909-22-1-2028]; Office of Naval Research Global [FK 145395]; National Research, Development, and Innovation Office of Hungary (NKFIH); Ministry of Culture and Innovation [2022-2.1.1-NL-2022-00004]; National Research, Development and Innovation Office within the Quantum Information National Laboratory of Hungary [2018.0071]; Knut and Alice Wallenberg Foundation through WBSQD2 project
2023-11-022023-11-022024-04-19