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Q: Fachverband Quantenoptik und Photonik

Q 58: Matter Wave Optics

Q 58.3: Poster

Donnerstag, 17. März 2022, 16:30–18:30, P

Towards diffracting atoms through graphene — •Jakob Bühler and Christian Brand — German Aerospace Center (DLR), Institute of Quantum Technologies

Modifying graphene by introducing foreign atoms and defects is a commonly used approach to augment its properties [1]. While often beams of fast atoms are used, the interaction process is only partly understood. To resolve this issue, we plan to diffract atomic hydrogen with a velocity of up to 120 000 m/s through the 246 pm lattice of graphene [2]. Thereby, we aim to directly probe the atom-graphene interaction during transmission, using the diffraction pattern as the read out. Using fast atoms will also provide new opportunities for fundamental tests of physics, such as quantum friction [3]. [1] Wang and Shi, Phys. Chem. Chem. Phys. 17, 28484 (2015) [2] Brand et al. New J. Phys. 21, 033004 (2019) [3] Silveirinha, New J. Phys. 16 063011 (2014)