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Q: Fachverband Quantenoptik und Photonik
Q 15: Matter-wave optics
Q 15.3: Vortrag
Montag, 18. März 2013, 17:15–17:30, F 142
Towards a test of Einstein’s equivalence principle using a Rb-K atom interferometer — •Dennis Schlippert, Jonas Hartwig, Ulrich Velte, Henning Albers, Jonas Matthias, Wolfgang Ertmer, and Ernst Rasel — Institut für Quantenoptik and Centre for Quantum Engineering and Space-Time Research - QUEST, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
We report on our work directed towards a dual species matter-wave interferometer for performing a differential measurement of the acceleration of free falling 87Rb and 39K atoms to test Einstein’s equivalence principle (universality of free fall). According to the minimal Standard Model Extension such a test is very sensitive to composition based equivalence principle violating effects and complementary to classical tests. We will show the enviromental noise limited performance of the single species Rb gravimeter (7.84·10−6m/s2/√Hz and 3.86·10−8m/s2 @ 49152 s) and the progress of the implementation of the K gravimeter. Moreover, we discuss possibilities to either match the interferometers’ sensitivities or to match their free evolution times resulting in high common noise rejection.