Publisher correction: a primary radiation standard based on quantum nonlinear optics

Correction to: _Nature Physics_ https://doi.org/10.1038/s41567-019-0447-2, published online 4 March 2019. In the version of this Letter originally published, in equation (3) a superscript

‘2’ was mistakenly placed inside the square root sign; instead it should have been outside as shown below: $${\cal{N}} = \left( {c^{ - 1}\;L\;\chi ^{\left( 2 \right)}E_{\mathrm{p}}}

\right)^2{\sqrt {\omega \omega _{\mathrm{i}}{\mathrm{/}}\left( {nn_{\mathrm{i}}} \right)}}^2{\mathrm{sinc}}^2\left( {{\mathrm{\Delta }}\kappa L{\mathrm{/}}2} \right)$$ (3) This error has now

been corrected in the online versions. AUTHOR INFORMATION Author notes * Enno Giese Present address: Institut für Quantenphysik and Center for Integrated Quantum Science and Technology,

Universität Ulm, Ulm, Germany * Robert Fickler Present address: Photonics Laboratory, Physics Unit, Tampere University, Tampere, Finland AUTHORS AND AFFILIATIONS * Department of Physics,

University of Ottawa, Ottawa, Ontario, Canada Samuel Lemieux, Enno Giese, Robert Fickler & Robert W. Boyd * Max Planck Institute for the Science of Light, Erlangen, Germany Maria V.

Chekhova * Physics Department, Lomonosov Moscow State University, Moscow, Russia Maria V. Chekhova * University of Erlangen-Nuremberg, Erlangen, Germany Maria V. Chekhova * Institute of

Optics, University of Rochester, Rochester, NY, USA Robert W. Boyd Authors * Samuel Lemieux View author publications You can also search for this author inPubMed Google Scholar * Enno Giese

View author publications You can also search for this author inPubMed Google Scholar * Robert Fickler View author publications You can also search for this author inPubMed Google Scholar *

Maria V. Chekhova View author publications You can also search for this author inPubMed Google Scholar * Robert W. Boyd View author publications You can also search for this author inPubMed 

Google Scholar CORRESPONDING AUTHOR Correspondence to Samuel Lemieux. RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Lemieux, S., Giese, E., Fickler, R.

_et al._ Publisher Correction: A primary radiation standard based on quantum nonlinear optics. _Nat. Phys._ 15, 869 (2019). https://doi.org/10.1038/s41567-019-0582-9 Download citation *

Published: 13 June 2019 * Issue Date: August 2019 * DOI: https://doi.org/10.1038/s41567-019-0582-9 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this

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