Correction to: Nature Communications https://doi.org/10.1038/s41467-017-02069-z, published online 08 Dec 2017

The original version of this Article contained an error in Fig. 6b. In the top scattering process, while the positioning of both arrows was correct, the colours were switched: the first arrow was red and the second arrow was blue, rather than the correct order of blue then red.

Correspondingly, the caption to Fig. 6b incorrectly stated “The occurrence of scattering at the pyramid corners and/or at the merging points of two pyramidal domains, in the N region of the junction, makes quasiparticle trajectories emerging from a negative py lobe (blue arrow) on one side of the junction to couple with trajectories that probe the negative py lobe (red arrow) on the other side of the junction” instead of the correct “The occurrence of scattering at the pyramid corners and/or at the merging points of two pyramidal domains, in the N region of the junction, makes quasiparticle trajectories emerging from a negative py lobe (blue arrow) on one side of the junction to couple with trajectories that probe the positive py lobe (red arrow) on the other side of the junction.”

Also, for clarity, labels “π” and “0” have been added to the top and bottom scattering path, respectively.

This has now been corrected in both the PDF and HTML versions of the Article.