Author Affiliations

S. Zhong,^1,* M. Isinger,¹ R.J. Squibb,² D. Busto,¹ A. Harth,¹ D. Kroon,¹ S. Nandi,¹ C. L. Arnold,¹ M. Miranda,¹ J. M. Dahlström,^1,3 E. Lindroth,³ R. Feifel,² M. Gisselbrecht,¹ and A. L’Huillier¹

¹Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden

²Department of Physics, Gothenburg University, Origovägen 6B, SE-41 296 Göteborg, Sweden

³Department of Physics, Stockholm University, SE-106 91 Stockholm, Sweden

^*Corresponding author: shiyang.zhong@fysik.lth.se