SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 2: Matter Wave Optics
Q 2.7: Vortrag
Montag, 6. März 2023, 12:45–13:00, E001
QUANTUS-2: Double Bragg atom interferometry in microgravity on long time scales — Laura Pätzold1, Merle Cornelius1, •Dorthe Leopoldt2, Julia Pahl3, Anurag Bhadane4, Waldemar Herr2,5, Patrick Windpassinger4, Christian Schubert5, Markus Krutzik3,6, Sven Herrmann1, Ernst M. Rasel2, and The QUANTUS Team1,2,3,4,7,8 — 1U Bremen — 2LU Hannover — 3HU Berlin — 4JGU Mainz — 5DLR SI — 6FBH Berlin — 7U Ulm — 8TU Darmstadt
Matter wave interferometry allows for quantum sensors with a wide range of applications, e.g. in geodesy or tests of fundamental physics. As a pathfinder for future space missions, QUANTUS-2 is a high-flux Rb-87 Bose-Einstein condensate (BEC) experiment operating in microgravity at the ZARM drop tower in Bremen. By applying a magnetic lens, we are able to reduce the total internal kinetic energy of the BEC to 3/2kB·38pK in three dimensions [1]. This is required to enhance the atomic signal for interferometry on time scales in the order of seconds as envisioned for future space based precision experiments. Via a retro-reflex interferometry setup, QUANTUS-2 is performing atom interferometry based on double Bragg diffraction in free fall. In this talk, we present our latest results on the performance of open Mach-Zehnder type interferometers on extended time scales.
This project is supported by the German Space Agency DLR with funds provided by the Federal Ministry for Economic Affairs and Climate Action (BMWK) under grant numbers DLR 50WM1952-1957.
[1] C. Deppner et al., Phys. Rev. Lett. 127, 100401 (2021)