Matter-wave interferometer for large molecules

Details Matter-wave interferometer for large molecules Matter-wave interferometer for large molecules

2002-02-26

arxiv.org/abs/quant-ph/0202158v1

Phys. Rev. Lett. 88, 100404 (2002)

Physics

Quantum Physics

revtex4, 4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.88.100404

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.

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