Heidelberg 2015 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster: Quantum Optics and Photonics III

Q 62.99: Poster

Thursday, March 26, 2015, 17:00–19:00, C/Foyer

Design of a novel microwave-chip electron beam splitter — •Philipp Weber, Jakob Hammer, Sebastian Thomas, and Peter Hommelhoff — Department für Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstrasse 1, 91058 Erlangen

We study free electrons in a microwave driven quadrupole guide [1, 2] in order to build a new and well-controllable electron-based quantum system. Here we present design and experimental demonstration of a new beam splitter for slow electrons based on a planar microwave chip. The transverse confinement for electron guiding is generated by a planar surface-electrode chip that is driven at microwave frequencies in the GHz range.

We have experimentally realized a planar chip that smoothly transforms the transverse guiding potential from a harmonic single well into a double well potential, thereby separating the 1eV electron beam into two output beams [3]. We will discuss further steps towards the demonstration of coherent splitting of an electron beam with this technique.

[1] J. Hoffrogge, R. Fröhlich, M. Kasevich and P. Hommelhoff, Phys. Rev. Lett. 106, 193001 (2011).

[2] J. Hoffrogge and P. Hommelhoff, New. J. Phys. 13, 095012 (2011).

[3] J. Hammer, S. Thomas, P. Weber and P. Hommelhoff, arXiv1408.2658.