Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 2: Quantum Optics I
Q 2.7: Vortrag
Montag, 5. März 2018, 12:15–12:30, K 0.016
Attosecond Electron Pulse Trains and Quantum State Reconstruction in Ultrafast Transmission Electron Microscopy — Katharina E. Priebe1, Christopher Rathje1,2, •Thomas Rittmann1, Sergey V. Yalunin1, Thorsten Hohage3, Armin Feist1, Sascha Schäfer1,2, and Claus Ropers1 — 14th Physical Institute, University of Göttingen, Germany — 2Institut für Physik, University of Oldenburg, Germany — 3Institut für Numerische und Angewandte Mathematik, University of Göttingen, Germany
In an ultrafast transmission electron microscope (UTEM), inelastic scattering between the free-electron beam and strong optical near-fields [1] allows for coherent manipulations of the electron quantum state [2]. Specifically, a light field imprints a phase modulation on the electron wave function, which is translated into an attosecond-structured electron density modulation by subsequent dispersive propagation [3].
Here, we employ multiple phase-locked field interactions to reconstruct the temporal structure of the electron density with our newly developed quantum state tomography technique ‘SQUIRRELS’ [4]. We experimentally demonstrate the compression of electron pulses into a train of attosecond bursts, which will promote new forms of ultrafast electron microscopy with attosecond resolution.
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K. Priebe et al., Nature Photonics 11, 793-797 (2017)