Quantum test of the Universality of Free Fall using rubidium and potassium

authored by

H. Albers, A. Herbst, L. L. Richardson, H. Heine, D. Nath, J. Hartwig, C. Schubert, C. Vogt, M. Woltmann, C. Lämmerzahl, S. Herrmann, W. Ertmer, E. M. Rasel, D. Schlippert

Abstract

Abstract: We report on an improved test of the Universality of Free Fall using a rubidium-potassium dual-species matter wave interferometer. We describe our apparatus and detail challenges and solutions relevant when operating a potassium interferometer, as well as systematic effects affecting our measurement. Our determination of the Eötvös ratio yields η

_Rb,K = −1.9 × 10

⁻⁷ with a combined standard uncertainty of σ

_η= 3.2 × 10

⁻⁷. Graphical abstract: [Figure not available: see fulltext.]

Organisation(s)

Institute of Quantum Optics
Institute of Environmental Planning
QuantumFrontiers
CRC 1227 Designed Quantum States of Matter (DQ-mat)

External Organisation(s)

University of Bremen

Type

Article

Journal

European Physical Journal D

Volume

74

No. of pages

11

ISSN

1434-6060

Publication date

07.07.2020

Publication status

Published

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Electronic version(s)

https://doi.org/10.48550/arXiv.2003.00939 (Access: Open)
https://doi.org/10.1140/epjd/e2020-10132-6 (Access: Open)