Atom-interferometric test of the universality of gravitational redshift and free fall

Research output: Contribution to journal › Article › Research

Authors

  • Christian Ufrecht
  • Fabio Di Pumpo
  • Alexander Friedrich
  • Albert Roura
  • Christian Schubert
  • Dennis Schlippert
  • Ernst M. Rasel
  • Wolfgang P. Schleich
  • Enno Giese

Research Organisations

External Research Organisations

  • Texas A and M University
  • German Aerospace Center (DLR)
  • Ulm University
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Details

Original languageEnglish
Article number043240
JournalPhys. Rev. Research
Volume2
Issue number4
Publication statusPublished - 16 Nov 2020

Abstract

Light-pulse atom interferometers constitute powerful quantum sensors for inertial forces. They are based on delocalised spatial superpositions and the combination with internal transitions directly links them to atomic clocks. Since classical tests of the gravitational redshift are based on a comparison of two clocks localised at different positions under gravity, it is promising to explore whether the aforementioned interferometers constitute a competitive alternative for tests of general relativity. Here we present a specific geometry which together with state transitions leads to a scheme that is concurrently sensitive to both violations of the universality of free fall and gravitational redshift, two premises of general relativity. The proposed interferometer does not rely on a superposition of internal states, but merely on transitions between them, and therefore generalises the concept of physical atomic clocks and quantum-clock interferometry. An experimental realisation seems feasible with already demonstrated techniques in state-of-the-art facilities.

Keywords

    quant-ph, gr-qc, physics.atom-ph

ASJC Scopus subject areas

Cite this

Atom-interferometric test of the universality of gravitational redshift and free fall. / Ufrecht, Christian; Pumpo, Fabio Di; Friedrich, Alexander et al.
In: Phys. Rev. Research, Vol. 2, No. 4, 043240, 16.11.2020.

Research output: Contribution to journal › Article › Research

Ufrecht, C, Pumpo, FD, Friedrich, A, Roura, A, Schubert, C, Schlippert, D, Rasel, EM, Schleich, WP & Giese, E 2020, 'Atom-interferometric test of the universality of gravitational redshift and free fall', Phys. Rev. Research, vol. 2, no. 4, 043240. https://doi.org/10.1103/PhysRevResearch.2.043240
Ufrecht, C., Pumpo, F. D., Friedrich, A., Roura, A., Schubert, C., Schlippert, D., Rasel, E. M., Schleich, W. P., & Giese, E. (2020). Atom-interferometric test of the universality of gravitational redshift and free fall. Phys. Rev. Research, 2(4), Article 043240. https://doi.org/10.1103/PhysRevResearch.2.043240
Ufrecht C, Pumpo FD, Friedrich A, Roura A, Schubert C, Schlippert D et al. Atom-interferometric test of the universality of gravitational redshift and free fall. Phys. Rev. Research. 2020 Nov 16;2(4):043240. doi: 10.1103/PhysRevResearch.2.043240
Ufrecht, Christian ; Pumpo, Fabio Di ; Friedrich, Alexander et al. / Atom-interferometric test of the universality of gravitational redshift and free fall. In: Phys. Rev. Research. 2020 ; Vol. 2, No. 4.
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