Brezger Björn, Hackermüller Lucia, Uttenthaler Stefan, Petschinka Julia, Arndt Markus, Zeilinger Anton
Universität Wien, Institut für Experimentalphysik, Boltzmanngasse 5, A-1090 Wien, Austria.
Phys Rev Lett. 2002 Mar 11;88(10):100404. doi: 10.1103/PhysRevLett.88.100404. Epub 2002 Feb 26.
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 microm 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.
我们展示了一种用于C70富勒烯分子的近场塔尔博特-劳干涉仪。这种干涉仪特别适用于较大质量的物体。使用三个周期为1微米的独立金光栅和一个横向非相干但速度选择的分子束，我们在高计数率下实现了40%的干涉条纹可见度。高可见度及其对速度的依赖性与考虑分子与光栅之间范德华相互作用的量子模拟结果吻合良好，并且与经典的莫尔模型形成了鲜明对比。
