Funding period: 2021 – 2024

Project leader: Peter Baum

Scientific staff: Dr. Yiqi Fang, Dr. Jacob Holder, Maximilian Mattes, Anaswara Ramachandran, Maxim Tsarev

Former members: Eruthuparna Ramachandran, Andrey Ryabov, Johannes Thurner

Electron beams and short electron pulses are central to a wide range of modern research and technology, but they suffer from space charge effects due to statistical electron-electron interactions. Here we combine laser-triggered few-electron emitters with a femtosecond single-electron detector at close to 100% quantum efficiency and aim for detecting the fundamental origin of beam fluctuations on level of the individual particles and their trajectories in space and time.

List of publications

Current preprints

2024

• Structured electrons with chiral mass and charge
  Y. Fang, J. Kuttruff, D. Nabben, and P. Baum
  Sci. 385, 183-187 - published 11 July 2024
   
• Terahertz control and temporal anti-correlations in a transmission electron microscope
  J. Kuttruff, D. Nabben, A. Zimmermann, A. Ryabov, P. Baum
  Sci. Adv. Vol 10, Issue 26 - published 26 June 2024
  also related to project B05

• Field-Induced Rocking-Curve Effects in Attosecond Electron Diffraction
  Y. Morimoto and P. Baum
  Phys. Rev. Lett. 132, 216902 – published 22 May 2024
   
• Electrons bunch up in quantum light
  A. Leitenstorfer, P. Baum
  Nature Physics - published 15 April 2024

2023

• Real-Time Electron Clustering in an Event-Driven Hybrid Pixel Detector
  J. Kuttruff, J. Holder, Y. Meng, and Peter Baum
  Ultramicroscopy 255, 113864  - published 5 October 2023
  related also to project  B05
   
• Nonlinear-optical quantum control of free-electron matter waves
  M. Tsarev, J. W. Thurner, and P. Baum
  Nat. Phys. 19 (2023) - published 12 June 2023
   
• Attosecond electron microscopy of sub-cycle optical dynamics
  D. Nabben, J. Kuttruff, L. Stolz, A. Ryabov, and P. Baum 
  Nature 619, 63 - published 31 May 2023

2022

• Spatiotemporal Attosecond Control of Electron Pulses via Subluminal Terahertz Waveforms
  M. Volkov, E. Ramachandran, M. Mattes, A. B. Swain, M. Tsarev, and P. Baum
  ACS Photonics 2022, 9, 3225–3233 – published 6 October 2022
  related also to project  B05
   
• Free-Electron Tomography of Few-Cycle Optical Waveforms
  Y. Morimoto, B.-H. Chen, and P. Baum
  Ann. Phys. 2022, 2200193  – published 09 September 2022
  related also to project  B05

2021

• Free-Electron Qubits and Maximum-Contrast Attosecond Pulses via Temporal Talbot Revivals
  M. Tsarev, A. Ryabov, and P. Baum
  Phys. Rev. Res. 3, 043033 – published 14 October 2021
   
• Measurement of Temporal Coherence of Free Electrons by Time-Domain Electron Interferometry
  M. Tsarev, A. Ryabov, and P. Baum
  Phys. Rev. Lett. 127, 165501 – published  11 October 2021
   
• Jitter-free terahertz pulses from LiNbO3
  J. Kuttruff, M. V. Tsarev, and P. Baum
  Opt. Lett. 12, 2944 – published 15 June 2021
  related also to project B05

Further Publications 

• Single-electron pulses for ultrafast diffraction
  M. Aidelsburger, F. O. Kirchner, F. Krausz, and P. Baum
  PNAS 107, 19714 - published 1 November 2010
   
• Tilted Electron Pulses
  D. Ehberger, A. Ryabov, and P. Baum
  Phys. Rev. Lett. 121, 094801 – published 29 August 2018
   
• Laser streaking of free electrons at 25 keV
  F. O. Kirchner, A. Gliserin, F. Krausz, and P. Baum 
  Nature Photonics 8, 52 - published 8 December 2013
   
• All-optical control and metrology of electron pulses
  C. Kealhofer, W. Schneider, D. Ehberger, A. Ryabov, F. Krausz, and P. Baum
  Science 352, 429 - published 22 April 2016
   
• Diffraction and microscopy with attosecond electron pulse trains
  Y. Morimoto, and P. Baum
  ​​​​​​​Nat. Phys. 14, 252 - published 27 November 2017