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Title:
Matter-Wave Interferometer for Large Molecules
Authors:
Brezger, Björn; Hackermüller, Lucia; Uttenthaler, Stefan; Petschinka, Julia; Arndt, Markus; Zeilinger, Anton
Affiliation:
AA(Universität Wien, Institut für Experimentalphysik, Boltzmanngasse 5, A-1090 Wien, Austria), AB(Universität Wien, Institut für Experimentalphysik, Boltzmanngasse 5, A-1090 Wien, Austria), AC(Universität Wien, Institut für Experimentalphysik, Boltzmanngasse 5, A-1090 Wien, Austria), AD(Universität Wien, Institut für Experimentalphysik, Boltzmanngasse 5, A-1090 Wien, Austria), AE(Universität Wien, Institut für Experimentalphysik, Boltzmanngasse 5, A-1090 Wien, Austria), AF(Universität Wien, Institut für Experimentalphysik, Boltzmanngasse 5, A-1090 Wien, Austria)
Publication:
Physical Review Letters, vol. 88, Issue 10, id. 100404 (PhRvL Homepage)
Publication Date:
03/2002
Origin:
APS
DOI:
10.1103/PhysRevLett.88.100404
Bibliographic Code:
2002PhRvL..88j0404B

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 mum 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.
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