1. Max Planck Institute for the Structure and Dynamics of Matter and Center for Free-Electron Laser Science & Department of Physics, Luruper Chaussee 149, Hamburg 22761, Germany
2. Harvard John A. Paulson School Of Engineering And Applied Sciences, Harvard University, Cambridge 02138, Massachusetts, United States
3. Center for Computational Quantum Physics, Flatiron Institute, 162 Fifth Avenue, New York 10010, New York, United States