New apparatus design for high-precision measurement of G with atom interferometry

@article{Jain2021NewAD,
  title={New apparatus design for high-precision measurement of G with atom interferometry},
  author={Manan Jain and Guglielmo Maria Tino and L. Cacciapuoti and Gabriele Rosi},
  journal={The European Physical Journal D},
  year={2021}
}
We propose a new scheme for an improved determination of the Newtonian gravitational constant G and evaluate it by numerical simulations. Cold atoms in free fall are probed by atom interferometry measurements to characterize the gravitational field generated by external source masses. Two source mass configurations having different geometry and using different materials are compared to identify an optimized experimental setup for the G measurement. The effects of the magnetic fields used to… 

Figures and Tables from this paper

Comment on New apparatus design for high-precision measurement of G with atom interferometry
It is shown that even in the case of a negligibly small change in the gradient of the gravitational field of the mass source in the axial direction, the dependence of this gradient in the radial

References

SHOWING 1-10 OF 66 REFERENCES
High-precision gravity measurements using atom interferometry
We have built an atom interferometer that can measure g, the local acceleration due to gravity, with a resolution of Δg/g = 2 × 10−8 after a single 1.3 s measurement cycle, 3 × 10−9 after 1 min and 1
Measurement of the gravitational acceleration of an atom with a light-pulse atom interferometer
Velocity sensitive stimulated Raman transitions have been used to measure the gravitational acceleration, g, of laser cooled sodium atoms in an atomic fountain geometry. By using an improved scheme
Atom interferometry based on light pulses: Application to the high precision measurement of the ratio h/m and the determination of the fine structure constant
In this paper we present a short overview of atom interferometry based on light pulses. We discuss different implementations and their applications for high precision measurements. We will focus on
A proposed atom interferometry determination of G at 10−5 using a cold atomic fountain
In precision metrology, the determination of the Newtonian gravity constant G represents a real problem, since its history is plagued by huge unknown discrepancies between a large number of
Phase shift in atom interferometry due to spacetime curvature
We present a single-source dual atom interferometer and utilize it as a gradiometer for precise gravitational measurements. The macroscopic separation between interfering atomic wave packets (as
Measurement of the gravity-field curvature by atom interferometry.
TLDR
The first direct measurement of the gravity-field curvature based on three conjugated atom interferometers is presented, and the possibility of using such a scheme for a new determination of the Newtonian constant of gravity is discussed.
Measurement of gravitational acceleration by dropping atoms
Laser-cooling of atoms and atom-trapping are finding increasing application in many areas of science. One important use of laser-cooled atoms is in atom interferometers. In these devices, an atom is
Characterization and limits of a cold-atom Sagnac interferometer
We present the full evaluation of a cold-atom gyroscope based on atom interferometry. We have performed extensive studies to determine the systematic errors, scale factor and sensitivity. We
Atom Interferometer Measurement of the Newtonian Constant of Gravity
TLDR
The Newtonian constant of gravity is measured using a gravity gradiometer based on atom interferometry using the differential acceleration of two samples of laser-cooled Cs atoms to investigate the change in gravitational field when a well-characterized Pb mass is displaced.
Towards an atom interferometric determination of the Newtonian gravitational constant
We report on progress towards an atom interferometric determination of the Newtonian gravitational constant. Free-falling laser-cooled atoms will probe the gravitational potential of nearby source
...
1
2
3
4
5
...