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Erlangen 2018 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 2: Quantum Optics I

Q 2.7: Talk

Monday, March 5, 2018, 12:15–12:30, K 0.016

Attosecond Electron Pulse Trains and Quantum State Reconstruction in Ultrafast Transmission Electron MicroscopyKatharina E. Priebe1, Christopher Rathje1,2, •Thomas Rittmann1, Sergey V. Yalunin1, Thorsten Hohage3, Armin Feist1, Sascha Schäfer1,2, and Claus Ropers114th 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.
B. Barwick et al., Nature 462, 902-906 (2009)
K. Echternkamp et al., Nature Physics 12, 1000-1004 (2016)
A. Feist et al., Nature 521, 200-203 (2015)
K. Priebe et al., Nature Photonics 11, 793-797 (2017)

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