Coherence of SK vs DE quantum dots Coherence in single photon emission from droplet epitaxy and Stranski-Krastanow quantum dots in the telecom C-band M. Anderson, 1, 2 T. M¨ uller, 1, a) J. Skiba-Szymanska, 1 A.B. Krysa, 3 J. Huwer, 1 R.M. Stevenson, 1 J. Heffernan, 4 D.A. Ritchie, 2 and A.J. Shields 1 1) Toshiba Europe Limited, Cambridge Research Laboratory, 208 Science Park, Milton Road, Cambridge, CB4 0GZ, UK 2) Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK 3) EPSRC National Epitaxy Facility, Department of Electronic and Electrical Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK 4) Department of Electronic and Electrical Engineering, University of Sheffield, mappin street Sheffield, S1 3JD, UK (Dated: 18 December 2020) 1 This is the author’s peer reviewed, accepted manuscript. However, the online version of record will be different from this version once it has been copyedited and typeset. PLEASE CITE THIS ARTICLE AS DOI: 10.1063/5.0032128