Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 27: Poster: Quantum Optics and Photonics II
Q 27.31: Poster
Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof
Diffraction of biomolecules at nanomechanical gratings — •Christian Brand1, Christian Knobloch1, Benjamin Stickler2, Lisa Wörner1, Michele Sclafani1,3, Thomas Juffmann1,4, Yigal Lilach5, Ori Cheshnovsky4, Klaus Hornberger2, and Markus Arndt1 — 1University of Vienna, Faculty of Physics, Vienna, Austria — 2University of Duisburg-Essen, Faculty of Physics, Duisburg, Germany — 3ICFO - Institut de Ciènces Fotòniques, Castelldefels (Barcelona), Spain — 4The Center for Nanosciences and Nanotechnology & School of Chemistry, Tel-Aviv University, Tel Aviv, Israel — 5Stanford University, Physics Department, Stanford, USA
The high complexity of molecular matter-waves makes them very sensitive to external perturbations originating, for instance, from electric fields or single photons. These can be exploited to study internal properties of the molecules and differentiate between constitutional isomers [1,2]. When material gratings are employed as diffracting elements in these kinds of experiment, it is crucial to characterize the interaction between the matter-wave and the beamsplitter very precisely. Here, we study the diffraction of the biomolecule hypericin at nanomechanical gratings. The observed partial decoherence of the matter-wave is explained by the phase-averaging due to the interaction between the permanent dipole moment and charges in the grating. This sets constraints to matter-wave experiments with biomolecules.
[1] Eibenberger et al. Phys. Rev. Lett. 112, 250402 (2014)
[2] Tüxen et al. Chem. Comm. 46, 4145 (2010)