Testing Gravity with Cold-Atom Interferometers
By G. Biedermann, X. Wu, L. Deslauriers, S. Roy, C. Mahadeswaraswamy, M. Kasevich. 2014
143 citations recorded by the source corpus.
We present a horizontal gravity gradiometer atom interferometer for precision gravitational tests. The horizontal configuration is superior for maximizing the inertial signal in the atom interferometer from a nearby proof mass. In our device, we have suppressed spurious noise associated with the horizonal configuration to achieve a differential acceleration sensitivity of 4.2$\times10^{-9}g/\sqrt{Hz}$ over a 70 cm baseline or 3.0$\times10^{-9}g/\sqrt{Hz}$ inferred per accelerometer. Using the performance of this instrument, we characterize the results of possible future gravitational tests. We complete a proof-of-concept measurement of the gravitational constant with a precision of 3$\times10^{-4}$ that is competitive with the present limit of 1.2$\times10^{-4}$ using other techniques. From this measurement, we provide a statistical constraint on a Yukawa-type fifth force at 8$\times$10$^{-3}$ near the poorly known length scale of 10 cm. Limits approaching 10$^{-5}$ appear feasible. We discuss improvements that can enable uncertainties falling well below 10$^{-5}$ for both experiments.
Subfields: Atomic and Molecular Physics, and Optics, Statistics and Probability
View Paper: https://www.semanticscholar.org/paper/36ebf3fb8e961cb6b70d2a4df0d7e0e6a3ce130a
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In Atomic and Molecular Physics, and Optics
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Citations in the corpus
- Search for New Physics with Atoms and Molecules (2017, background): “The potential of matter-wave interferometers using quantum gases for probing fundamental concepts of quantum mechanics and GR has been discussed by Biedermann et al. (2015); Dimopoulos et al. (2007); Herrmann et al. (2012); Müntinga et al. (2013).”