Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 40: Precision Measurements and Metrology (Atom Interferometry)
Q 40.7: Talk
Thursday, March 12, 2020, 12:45–13:00, a310
Beamsplitters and sensitivity to relativistic effects in atom-interferometry — •Alexander Friedrich1, Butrint Pacolli1, Fabio Di Pumpo1, Enno Giese1, and Wolfgang P. Schleich1,2 — 1Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany — 2Institut für Quantentechnologien, Deutsches Zentrum für Luft- und Raumfahrt, Söflinger Str. 100, D-89077 Ulm, Germany
Recently, quantum-clock interferometry [1] has been suggested to investigate relativistic effects on the center-of-mass motion in superpositions of internal states. These proposals combine high-precision quantum metrological techniques with studies of the fundamental interconnections between relativity and quantum mechanics. Complementary to tests of relativity with atomic clocks, quantum-clock interferometry allows one to test these effects with a single but delocalized quantum object.
However, the sensitivity with respect to relativistic effects [1,2] depends crucially on the geometry and the specific details of the involved beamsplitting processes. In our contribution we investigate, elaborate and clarify the link between typical beamsplitters used in the proposed schemes and the sensitivity to relativistic effects.
The QUANTUS project is supported by the German Aerospace Center (DLR) with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) under grant number 50WM1956.
[1] A. Roura, arXiv 1810.06744, (2018)
[2] S. Loriani, A. Friedrich et al., Sci. Adv. 5 (10), eaax8966 (2019)