Matter-Wave Interferometer for Large Molecules

Author(s): B. Brezger, L. Hackermüller, S. Uttenthaler, J. Petschinka, M. Arndt, A. Zeilinger

Journal: Physical Review Letters

Volume: 88

Page(s): 100404

Year: 2002

DOI Number: 10.1103/PhysRevLett.88.100404

Link: Link to publication

Abstract:

We demonstrate a near-field Talbot-Lau interferometer for C70 fullerene molecules. Such interferometers are particularly suitable for larger masses. Using three free-standing gold gratings of 1 μm 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 moiré model.

Note: neu: March 11

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