Author Affiliations

J. Huwer,^1,* Z. Xiang,^1,2 G. Shooter,^1,2 J. Skiba-Szymanska,¹ T. Müller,¹ D. J. P. Ellis,¹ M. Anderson,^1,2 J. R. A. Müller,^1,3 T. Mitchell,² J. Griffiths,² R. M. Stevenson,¹ A. Krysa,⁴ J. Heffernan,⁴ I. Farrer,^2,5 D. A. Ritchie,² and A. J. Shields¹

¹Toshiba Research Europe Limited, 208 Science Park, Milton Road, Cambridge CB4 0GZ, UK

²Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, UK

³Department of Physics and Astronomy, Hounsfield Road, University of Sheffield, Sheffield S3 7RH, UK

⁴EPSRC National Epitaxy Facility, University of Sheffield, Sheffield S1 3JD, UK

⁵Present address: Department of Electronic & Electrical Engineering, University of Sheffield, Sheffield S1 3JD, UK

^*Corresponding author: jan.huwer@crl.toshiba.co.uk