Hannover 2016 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 27: Poster: Quantum Optics and Photonics II

Q 27.28: Poster

Tuesday, March 1, 2016, 16:30–19:00, Empore Lichthof

Beam separation schemes in an ion interferometer for the measurement of the electric Aharonov-Bohm effect — •Georg Schütz, Alexander Rembold, Andreas Pooch, Henrike Prochel, and Alexander Stibor — Institute of Physics and Center for Collective Quantum Phenomena in LISA⁺, University of Tübingen, Auf der Morgenstelle 15, 72076 Tübingen

We present the design and the current status in the construction of a biprism interferometer for hydrogen and helium ions and propose an experiment for the first proof of the type I electric Aharonov-Bohm effect. The performances of three different beam separation schemes are simulated and compared to experimental results for electrons. In our proposed scheme, the coherent ion beam is generated by a single atom tip (SAT) source and separated by either two biprisms with a quadrupole lens, two biprisms with an einzel-lens or three biprisms. The beam path separation is necessary to integrate two metal tubes that can be pulsed with different electric potentials. The high time resolution of a delay line detector allows working with a continuous ion beam and circumventing the pulsed beam operation that was originally suggested by Aharonov and Bohm. We demonstrate that the higher mass and therefore lower velocity of ions compared to electrons combined with the high expected SAT ion emission puts the direct proof of this quantum effect for the first time into reach of current technical possibilities.