Funding period: 2021 – 2024

Project leader: Peter Baum

Scientific staff: Dr. Yiqi Fang, Maximilian Mattes, Anaswara Ramachandran, Andrey Ryabov, Maxim Tsarev

Former members: Eruthuparna Ramachandran, 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

• Terahertz control in a transmission electron microscope
  J. Kuttruff, D. Nabben, A. Zimmermann, A. Ryabov, P. Baum
  arXiv:2402.12007 - published 19 February 2024
  Sci. Adv. under review (2024)
  also related to project B05

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