Correction to: Nature Photonics, published online 23 June 2022.

In the version of this article initially published, there was an error in the expression directly following equation (3) where the text now reading “where |v1〉=TB|u1〉 and |v2〉= TB|u2〉” appeared initially as “where |v1〉 =TB + t12|u2〉 and |v2〉 = TB.” The error has been corrected in the HTML and PDF versions of the article.