Position-controlled quantum emitters with reproducible emission wavelength in hexagonal boron nitride

Clarisse Fournier, Alexandre Plaud, Sébastien Roux, Aurélie Pierret, Michael Rosticher, Kenji Watanabe, Takashi Taniguchi, Stéphanie Buil, Xavier Quélin, Julien Barjon, Jean-Pierre Hermier and Aymeric Delteil ()
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Clarisse Fournier: Université Paris-Saclay, UVSQ, CNRS, GEMaC
Alexandre Plaud: Université Paris-Saclay, UVSQ, CNRS, GEMaC
Sébastien Roux: Université Paris-Saclay, UVSQ, CNRS, GEMaC
Aurélie Pierret: Université PSL, CNRS, Sorbonne Université, Université de Paris
Michael Rosticher: Université PSL, CNRS, Sorbonne Université, Université de Paris
Kenji Watanabe: National Institute for Materials Science
Takashi Taniguchi: National Institute for Materials Science
Stéphanie Buil: Université Paris-Saclay, UVSQ, CNRS, GEMaC
Xavier Quélin: Université Paris-Saclay, UVSQ, CNRS, GEMaC
Julien Barjon: Université Paris-Saclay, UVSQ, CNRS, GEMaC
Jean-Pierre Hermier: Université Paris-Saclay, UVSQ, CNRS, GEMaC
Aymeric Delteil: Université Paris-Saclay, UVSQ, CNRS, GEMaC

Nature Communications, 2021, vol. 12, issue 1, 1-6

Abstract: Abstract Single photon emitters (SPEs) in low-dimensional layered materials have recently gained a large interest owing to the auspicious perspectives of integration and extreme miniaturization offered by this class of materials. However, accurate control of both the spatial location and the emission wavelength of the quantum emitters is essentially lacking to date, thus hindering further technological steps towards scalable quantum photonic devices. Here, we evidence SPEs in high purity synthetic hexagonal boron nitride (hBN) that can be activated by an electron beam at chosen locations. SPE ensembles are generated with a spatial accuracy better than the cubed emission wavelength, thus opening the way to integration in optical microstructures. Stable and bright single photon emission is subsequently observed in the visible range up to room temperature upon non-resonant laser excitation. Moreover, the low-temperature emission wavelength is reproducible, with an ensemble distribution of width 3 meV, a statistical dispersion that is more than one order of magnitude lower than the narrowest wavelength spreads obtained in epitaxial hBN samples. Our findings constitute an essential step towards the realization of top-down integrated devices based on identical quantum emitters in 2D materials.

Date: 2021
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DOI: 10.1038/s41467-021-24019-6

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