Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster VII
Q 56.3: Poster
Thursday, March 14, 2024, 17:00–19:00, KG I Foyer
Tunable Bragg-diffraction beam splitters for molecular matter waves — •Eric van den Bosch1, Benjamin A. Stickler2, Lukas Martinetz1, and Klaus Hornberger1 — 1University of Duisburg-Essen, Germany — 2Ulm University, Germany
Matter-wave interferometry offers rich applications ranging from testing fundamental principles of quantum mechanics with large particles to probing material properties and measuring accelerations with high precision. The lack of brilliant sources for heavy particles requires efficient ways to split an incident wave packets into two branches. One way to achieve such large momentum beam splitters is Bragg diffraction at thick optical gratings, as realised experimentally in [1].
We study how further modulations of the laser grating, e.g. adiabatic application of an additional constant force, may extend established means to control populations in the interferometer arms [2], as well as provide a first step towards Bragg diffraction at thin gratings.
[1] Brand, Kiałka, Troyer, Knobloch, Simonović, Stickler, Hornberger, Arndt (2020). Bragg diffraction of large organic molecules. Physical Review Letters, 125(3) [2] Siemß, Fitzek, Abend, Rasel, Gaaloul, Hammerer (2020). Analytic theory for Bragg atom interferometry based on the adiabatic theorem. Physical Review A, 102(3)
Keywords: Bragg Diffraction; Matter Waves; Beam Splitter