Atom interferometers’ phases at the presence of heavy masses; their use to measure Newtonian gravitational constant; optimization, error model, perspectives

  title={Atom interferometers’ phases at the presence of heavy masses; their use to measure Newtonian gravitational constant; optimization, error model, perspectives},
  author={B. Ya. Dubetsky},
  journal={Journal of Physics: Conference Series},
  • B. Dubetsky
  • Published 2017
  • Physics
  • Journal of Physics: Conference Series
The contribution to the phase of the atom interferometer caused by the gravity field of a massive test mass is considered. This contribution can be extracted by applying the double difference technique to measure the Newtonian gravitational constant G. Estimates and further calculations showed that after choosing the largest (given the current state of the art) multiphoton wave vector, the time delay between pulses, the mass of the test body and the signal optimization in respect to atomic… 

Optimization of the atom interferometer phase produced by the set of cylindrical source masses to measure the Newtonian gravity constant

An analytical expression for the gravitational field of a homogeneous cylinder is derived. The phase of the atom interferometer produced by the gravity field of the set of cylinders has been

Newtonian gravitational constant measurement. All atomic variables become extreme when using a source mass consisting of three or more parts

Atomic interferometry methods used to measure the Newtonian gravitational constant. To improve the accuracy, one should measure the phase of an atomic interferometer at extreme values of atomic



Atom interferometry in the presence of an external test mass

The influence of an external test mass on the phase of the signal of an atom interferometer is studied theoretically. Using traditional techniques in atom optics based on the density matrix equations

Optimization and error model for atom interferometry technique to measure Newtonian gravitational constant

Considered contribution to the phase of the atom interferometer caused by the gravity field of the massive proof mass. Demonstrated the method of finding the extrema of this contribution for 100kg

Atom interferometer as a selective sensor of rotation or gravity

In the presence of Earth gravity and gravity-gradient forces, centrifugal and Coriolis forces caused by the Earth rotation, the phase of the time-domain atom interferometers is calculated with

Precision measurement of the Newtonian gravitational constant using cold atoms

The precise determination of G is reported using laser-cooled atoms and quantum interferometry to identify the systematic errors that have proved elusive in previous experiments, thus improving the confidence in the value of G.

Atom Interferometer Measurement of the Newtonian Constant of Gravity

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.

Testing Gravity with Cold-Atom Interferometers

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

Quantum superposition at the half-metre scale

Large quantum superposition states are vital to exploring gravity with atom interferometers in greater detail and could be used to increase sensitivity in tests of the equivalence principle, measure the gravitational Aharonov–Bohm effect, and eventually detect gravitational waves and phase shifts associated with general relativity.

Matter wave lensing to picokelvin temperatures.

Using a matter wave lens and a long time of flight, an ensemble of ^{87}Rb atoms in two dimensions is cooled to an effective temperature of less than 50_{-30}^{+50}  pK, setting limits on proposed modifications to quantum mechanics in the macroscopic regime.

Multiaxis inertial sensing with long-time point source atom interferometry.

We show that light-pulse atom interferometry with atomic point sources and spatially resolved detection enables multiaxis (two rotation, one acceleration) precision inertial sensing at long

Measurement of the Earth's Gravity Gradient with an Atom Interferometer-Based Gravity Gradiometer

We report the demonstration of an atom interferometer-based gravity gradiometer. The gradiometer uses stimulated two-photon Raman transitions to measure the relative accelerations of two ensembles of