Quantum tests of the equivalence principle with atom interferometry

Naceur Gaaloul*, T. V. Zoest, H. Ahlers, Y. Singh, S. T. Seidel, W. Herr, W. Ertmer, E. Rasel, M. Eckart, E. Kajari, S. Arnold, G. Nandi, R. Walser, W. P. Schleich, A. Vogel, K. Sengstock, K. Bongs, W. Lewoczko-Adamczyk, M. Schiemangk, A. PetersT. Könemann, H. Müntinga, C. Lämmerzahl, H. Dittus, T. Steinmetz, T. W. Hänsch, J. Reichel

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The weak Equivalence Principle (EP) represents a corner stone in the General Theory of relativity [1]. The validity of this postulate was and is currently tested in different groups with different systems. Among this multitude atom interferometry is considered to be one of the most powerful tools in performing high-precision measurements [2]. Using two atom species in free fall with different masses allows comparing two independent measurements of g. This is made possible by creating simultaneously in a single experiment a mixture of two atomic species at a temperature close to the absolute zero. This regime is suitable to the observation of matter waves at long time scales needed for quantum tests. In this letter an overview of the last developments of these quantum sensors is done. The up-to-date progress and future prospects in our group of these ambitious and technically challenging projects will be presented as well.

Original languageEnglish
Title of host publication60th International Astronautical Congress 2009, IAC 2009
Pages488-492
Number of pages5
Publication statusPublished - 2009
Event60th International Astronautical Congress 2009, IAC 2009 - Daejeon, Korea, Republic of
Duration: 12 Oct 200916 Oct 2009

Publication series

Name60th International Astronautical Congress 2009, IAC 2009
Volume1

Conference

Conference60th International Astronautical Congress 2009, IAC 2009
Country/TerritoryKorea, Republic of
CityDaejeon
Period12/10/0916/10/09

Bibliographical note

Funding Information:
The QUANTUS project is supported by the German Space Agency DLR with funds provided by the Federal Ministry of Economics and Technology (BMWi) under Grant no. DLR 50 WM 0346 .

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

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