Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 58: Poster: Quantum Optics and Photonics III
Q 58.5: Poster
Donnerstag, 14. März 2019, 16:15–18:15, S Atrium Informatik
Atom interferometry with branch-dependent light pulses — •Enno Giese, Fabio Di Pumpo, Alexander Friedrich, and Wolfgang P. Schleich — Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST ), Universität Ulm.
Light pulses are a versatile tool for the manipulation of ultracold quantum gases. In this context, they have become a standard method to generate beam splitters as well as mirrors for atom interferometers and have opened the pathway to high-precision atom interferometry. However, intrinsic limitations to the applicability of light pulses arise because the light always interacts simultaneously with both branches of an interferometer. This effect is of particular relevance for state-of-the-art large-momentum transfer schemes. At the same time, the analysis of two-photon light shifts and diffraction phases in retroreflective geometries is essential for high-precision interferometry.
In our contribution, we discuss the possibility of using light pulses that address only one interferometer branch to generate schemes akin to guided atom interferometers. We investigate novel interferometer geometries that can be generated by these technique and compare them to conventional schemes. Our interferometer provides a new platform to investigate relativistic effects and poses a complementary approach towards quantum-clock interferometry.
The QUANTUS project is supported by the German Space Agency DLR with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) under grant number 50WM1556 (QUANTUS IV).