Author Affiliations

Siqi Li,^1,2,* Philipp Rosenberger,^3,4 Elio G. Champenois,⁴ Taran Driver,⁵ Philip H. Bucksbaum,^1,4 Ryan Coffee,⁶ Averell Gatton,⁶ Gregor Hartmann,⁷ Wolfram Helml,⁸ Zhirong Huang,² Jonas Knurr,⁴ Matthias F. Kling,^3,4,8 Ming-Fu Lin,⁶ James P. MacArthur,^1,2 Timothy J. Maxwell,² Megan Nantel,^1,2 Adi Natan,⁴ Jordan T. Oneal,^1,4 Niranjan H. Shivaram,⁶ Peter Walter,⁶ Thomas J. A. Wolf,⁴ James P. Cryan,^4,6 and Agostino Marinelli²

¹Department of Physics, Stanford University, Stanford, California 94305, USA

²SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA

³Department of Physics, Ludwig-Maximilians-Universitat Munchen, D-85748 Garching, Germany

⁴Stanford PULSE Insititute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA

⁵Imperial College, London SW7 2BW, United Kingdom

⁶Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California, 94025, USA

⁷Institut fur Physik und CINSaT, Universitat Kassel, Kassel, Germany

⁸Max Planck Institute of Quantum Optics, D-85748 Garching, Germany

^*Corresponding author: siqili@slac.stanford.edu