We demonstrate a near-field Talbot-Lau interferometer for C-70 fullerene molecules. Such interferometers are particularly suitable for larger masses. Using three free-standing gold gratings of one micrometer period and a transversally incoherent but velocity-selected molecular beam, we achieve an interference fringe visibility of 40 % with high count rate. Both the high visibility and its velocity dependence are in good agreement with a quantum simulation that takes into account the van der Waals interaction of the molecules with the gratings and are in striking contrast to a classical moire model.
@article{arxiv.quant-ph/0202158,
title = {Matter-wave interferometer for large molecules},
author = {B. Brezger and L. Hackermüller and S. Uttenthaler and J. Petschinka and M. Arndt and A. Zeilinger},
journal= {arXiv preprint arXiv:quant-ph/0202158},
year = {2016}
}