Correction to: Nature Communications 10.1038/s41467-019-09490-6, published online 03 April 2019.
The original version of this Article omitted the following from the end of the Acknowledgements: ‘This work was supported by NSF EAGER: 1836566, NSF EFRI EFMA-1542707, NSF CAREER DMR 1553788, AFOSR FA9550-19-1-0074, the Cornell Center for Materials Research with funding from the NSF MRSEC program (DMR- 1719875) and the University of Rochester University Research Award and the Leonard Mandel Faculty Fellowship in Quantum Optics’. This has now been corrected in both the PDF and HTML versions of the Article.