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Atom-interferometric test of the universality of gravitational redshift and free fall
- Source :
- Physical Review Research. 2
- Publication Year :
- 2020
- Publisher :
- American Physical Society (APS), 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.<br />Comment: 8 pages, 4 figures
- Subjects :
- Physics
Quantum Physics
Atomic Physics (physics.atom-ph)
General relativity
Quantum sensor
FOS: Physical sciences
General Relativity and Quantum Cosmology (gr-qc)
Atom interferometry
cold atoms & matter waves
General Relativity and Quantum Cosmology
Atomic clock
Physics - Atomic Physics
Universality (dynamical systems)
Interferometry
Theoretical physics
Superposition principle
Tests of general relativity
Theoretische Quantenphysik
Quantum Physics (quant-ph)
Gravitational redshift
Subjects
Details
- ISSN :
- 26431564
- Volume :
- 2
- Database :
- OpenAIRE
- Journal :
- Physical Review Research
- Accession number :
- edsair.doi.dedup.....9ace9d9daa1385aa9110c60214a51bac