Erlangen 2022 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 63: Matter Wave Optics
Q 63.6: Talk
Friday, March 18, 2022, 11:45–12:00, Q-H10
Atomic diffraction through single-layer graphene — •Christian Brand1,2, Maxime Debiossac2, Toma Susi2, Francois Aguillon3, Jani Kotakoski2, Philippe Roncin3, and Markus Arndt2 — 1German Aerospace Center, Institute of Quantum Technologies — 2University of Vienna, Faculty of Physics — 3Université Paris Saclay, Institut des Sciences Moléculaires d’ Orsay
We discuss the prospect of diffracting fast atomic matter waves through atomically thin membranes, such as graphene. Using hydrogen atoms with a velocity of up to 120’000 m/s, we predict a high probability of coherently diffracting the matter wave through the crystalline grating. As the atom-membrane interaction is encoded in the matter wave, interaction microscopy on the pm-scale might be possible. The natural lattice constant of 246 pm furthermore leads to unusual wide diffraction angles in the regime of mrad, which are interesting for novel applications in atom interferometry.
[1] Brand et al., New J. Phys 21, 033004 (2019)