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Quantum Test of the Universality of Free Fall

Atomic Physics 2014-06-24 v1 General Relativity and Quantum Cosmology

Abstract

We simultaneously measure the gravitationally-induced phase shift in two Raman-type matter-wave interferometers operated with laser-cooled ensembles of 87^{87}Rb and 39^{39}K atoms. Our measurement yields an E\"otv\"os ratio of ηRb,K=(0.3±5.4)×107\eta_{\text{Rb,K}}=(0.3\pm 5.4)\times 10^{-7}. We briefly estimate possible bias effects and present strategies for future improvements.

Keywords

Cite

@article{arxiv.1406.4979,
  title  = {Quantum Test of the Universality of Free Fall},
  author = {Dennis Schlippert and Jonas Hartwig and Henning Albers and Logan L. Richardson and Christian Schubert and Albert Roura and Wolfgang P. Schleich and Wolfgang Ertmer and Ernst M. Rasel},
  journal= {arXiv preprint arXiv:1406.4979},
  year   = {2014}
}