Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 34: Poster 1

Q 34.60: Poster

Dienstag, 13. März 2012, 16:30–19:00, Poster.I+II

A Biprism-Interferometer for Ions and charged Molecules — •Andreas Pooch1, Alexander Rembold1, Georg Schütz1, Franz Hasselbach1, Ing-Shouh Hwang2, and Alexander Stibor11Quanten-Ionen-Interferometrie, Physikalisches Institut, Universität Tübingen, Auf der Morgenstelle 15, 72076 Tübingen — 2Institute of Physics, Academia Sinica, Taipei, Taiwan, R.O.C.

Important achievements have been accomplished within the last centuries in matter-wave interferometry for electrons, neutral atoms, neutrons and neutral molecules. However, until now the field lacks of experiments with ions and charged molecules. Even if a novel interferometer for ions combines the advantages of the other approaches: The high technical standard in the generation and precise control of electron beams can be used also on ions. The charge makes them applicable to novel fundamental experiments in connection with the magnetic and electrostatic Aharonov-Bohm effect. The inner structure of ions allows the manipulation of inner degrees of freedom such as laser excitation of ionic states or vibrational excitation in charged molecules.

Here we present the design and the current status in the construction of the first stable ion-interferometer. In our setup the charged matter-wave will be generated by a novel single-atom metal tip and separated by a fine charged biprism wire. The longitudinal coherence is adjusted by a Wien-filter and the interference pattern will be detected after quadrupole magnification by a delayline detector.

We also discuss future applications for ion-interferometers as highly sensitive sensors for rotation and acceleration.

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