Tunable and high-purity room temperature single-photon emission from atomic defects in hexagonal boron nitride

Gabriele Grosso (), Hyowon Moon, Benjamin Lienhard, Sajid Ali, Dmitri K. Efetov, Marco M. Furchi, Pablo Jarillo-Herrero, Michael J. Ford, Igor Aharonovich and Dirk Englund ()
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Gabriele Grosso: Massachusetts Institute of Technology
Hyowon Moon: Massachusetts Institute of Technology
Benjamin Lienhard: Massachusetts Institute of Technology
Sajid Ali: University of Technology Sydney
Dmitri K. Efetov: Massachusetts Institute of Technology
Marco M. Furchi: Massachusetts Institute of Technology
Pablo Jarillo-Herrero: Massachusetts Institute of Technology
Michael J. Ford: University of Technology Sydney
Igor Aharonovich: University of Technology Sydney
Dirk Englund: Massachusetts Institute of Technology

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Two-dimensional van der Waals materials have emerged as promising platforms for solid-state quantum information processing devices with unusual potential for heterogeneous assembly. Recently, bright and photostable single photon emitters were reported from atomic defects in layered hexagonal boron nitride (hBN), but controlling inhomogeneous spectral distribution and reducing multi-photon emission presented open challenges. Here, we demonstrate that strain control allows spectral tunability of hBN single photon emitters over 6 meV, and material processing sharply improves the single photon purity. We observe high single photon count rates exceeding 7 × 106 counts per second at saturation, after correcting for uncorrelated photon background. Furthermore, these emitters are stable to material transfer to other substrates. High-purity and photostable single photon emission at room temperature, together with spectral tunability and transferability, opens the door to scalable integration of high-quality quantum emitters in photonic quantum technologies.

Date: 2017
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DOI: 10.1038/s41467-017-00810-2

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