"Extreme Localization of Electrons in Space and Time."

  • Date: Jan 10, 2012
  • Time: 12:30 PM - 12:30 PM (Local Time Germany)
  • Speaker: Dr. Peter Hommelhoff, MPI für Quanten Optik, Garching; Forschungsgruppe "Ultraschnelle Quantenoptik"
  • Room: Herbert Walther Lecture Hall
  • Host: MPQ
Waveform control of few-cycle laser pulses allows steering of electrons in atoms, molecules, and clusters in the gas phase, which has led to, for example, attosecond pulse generation and time-resolved imaging of molecular orbitals. We have observed strong-field effects from nanoscale metal tips [1], including re-scattering and strong carrier-envelope phase effects, which reveal themselves via matter wave interference in the time-energy domain [2]. This paves the way towards light-based steering of electrons in a solid-state system. In a separate experiment we have demonstrated guiding of electrons in a linear Paul trap [3], which might lead to a new quantum system. We will report on both experiments. [1] M. Schenk, M. Krüger, P. Hommelhoff, PRL 105, 257601 (2010) [2] M. Krüger, M. Schenk, P. Hommelhoff, Nature 475, 78 (2011) [3] J. Hoffrogge, R. Fröhlich, M. Kasevich, P. Hommelhoff, PRL 106, 193001 (2011)
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