Funding period: 2021 – 2024

Project leader: Alfred Leitenstorfer

Scientific staff: Frieder Conradt, Marwin Gedamke, Sebastian Grossenbach, Ron Tenne

Former members: Matthias Falk, Philipp Sterk, Philipp Henzler

This project studies the statistics of electron transport under atomic-scale spatio-temporal confinement, i.e. at picometer length and attosecond time scales. In this regime, fundamental processes and phenomena such as strong Coulomb correlations between elementary charges and vacuum fluctuations of the electromagnetic field are expected to play a significant role. The experiments are enabled by a combination of phase-stable single cycles of light in the near infrared and plasmonic picostructures with electrical readout. Cooling of the samples below 2 K is intended to avoid structural instabilities and to enable shot-to-shot measurements of charge fluctuations with microwave single-electron transistor technology.

List of publications

Current preprints

• Dynamical renormalisation of a spin Hamiltonian via high-order nonlinear magnonics
  C. Schoenfeld, L. Feuerer, D. Wuhrer, W. Belzig, A. Leitenstorfer, D. Juraschek, and D. Bossini
  arXiv:2310.19667 - published 30 October 2023
  also related to project A03 and B07

2023

• Electric-Field Fluctuations as the Cause of Spectral Instabilities in Colloidal Quantum Dots​​​​​​​
  F. Conradt, V. Bezold, V. Wiechert, S. Huber, S. Mecking, A. Leitenstorfer, and R. Tenne
  Nano Letters 23, 21 - published 23 October 2023​​​​​​​
   
• Tracing attosecond electron emission from a nanometric metal tip
  P. Dienstbier, L. Seiffert, T. Paschen, A. Liehl, A. Leitenstorfer, T. Fennel, P. Hommelhoff
  Nature 616, 702 - published 26 April 2023

2022

• Quantitative analysis of free-electron dynamics in InSb by terahertz shockwave spectroscopy
  P. Fischer, G. Fitzky, D. Bossini, A. Leitenstorfer, and R. Tenne
  Phys. Rev. B 106, 205201 - published 07 November 2022
   
• Passively phase-locked Er:fiber source of single-cycle pulses in the near infrared with electro-optic timing modulation for field-resolved electron control
  C. Schoenfeld, P. Sulzer, D. Brida, A. Leitenstorfer, T. Kurihara
  Opt. Lett. 47, 3552 - published 15 July 2022

2021

• Ultrafast Control of Magnetic Anisotropy by Resonant Excitation of 4f Electrons and Phonons in Sm_0.7Er_0.3FeO₃
  G. Fitzky, M. Nakajima, Y. Koike, A. Leitenstorfer, and T. Kurihara
  Phys. Rev. Lett. 127, 10740 –  published 1 September 2021
   
• Femtosecond Transfer and Manipulation of Persistent Hot-Trion Coherence in a Single CdSe/ZnSe Quantum Dot
  P. Henzler, C. Traum, M. Holtkemper, D. Nabben, M. Erbe, D. E. Reiter, T. Kuhn, S. Mahapatra, K. Brunner, D. V. Seletskiy, and A. Leitenstorfer
  Phys. Rev. Lett. 126, 067402 – Published 9 February 2021

Further Publications 

• Sub-cycle optical phase control of nanotunnelling in the single-electron regime
  T. Rybka, M. Ludwig, M. F. Schmalz, V. Knittel, D. Brida, A. Leitenstorfer
  Nature Photon 10, 667-670 - published 19 September 2016
   
• Sub-femtosecond electron transport in a nanoscale gap
  M. Ludwig, G. Aguirregabiria, F. Ritzkowsky, T. Rybka, D. C. Marinica, J. Aizpurua, A. G. Borisov, A. Leitenstorfer, and D. Brida 
  Nat. Phys. 16, 341-345 - published 23 December 2020