Rostock 2019 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 42: Poster: Quantum Optics and Photonics II

Q 42.33: Poster

Mittwoch, 13. März 2019, 16:15–18:15, S Atrium Informatik

Microwave-based beam manipulators for a quantum electron microscope — •Michael Seidling, Robert Zimmermann, and Peter Hommelhoff — Department Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen

The current status of development of a beam splitter and resonator for guided low-energy electrons (eV range) is reported. The beam manipulation is based on microwave electric fields applied to micro-structured chips. A possibility to guide electrons is provided by the Paul trap principle, in which electrons are confined in the two directions perpendicular to the direction of motion by fast alternating electric fields. With a slightly more complex electrode arrangement, a beam splitter for guided electrons can be attained. For various applications, coherent beam splitting would be desirable to have. We discuss a new beam splitter design for coherent beam splitting and the current status of the resonator guide structure. Therefore, We have built a laser-triggered electron microscope, whose electron triggering laser pulses are phase-locked to the electron guide's microwave driving fields. This way, the electrons can be injected in to guide at a certain microwave phase.