Simultaneous accurate determination of both gravity and its vertical gradient

Abstract

We present a method for the accurate measurements of both the gravity acceleration and its vertical gradient using a dual atom interferometer, in principle free from any uncertainty related to the absolute or relative positions of the two atomic samples. The method relies on the use of a dual lock technique, which stirs simultaneously the chirp rate applied to the frequency difference between the interferometer lasers to compensate the gravity acceleration, and the frequency jump applied to the lasers at the mid pulse of the interferometer to compensate for the gravity gradient. This allows in the end to determine the two inertial quantities of interest in terms of frequencies.

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Cited by in corpus (10)

• A compact differential gravimeter at the quantum projection noise limit
• Testing the Universality of Free Fall using correlated ${}^{39}$K -- ${}^{87}$Rb interferometers
• Gravity field modelling for the Hannover 10m atom interferometer
• Tailoring multi-loop atom interferometers with adjustable momentum transfer
• A prototype industrial laser system for cold atom inertial sensing in space
• Low noise phase-locked laser system for atom interferometry
• Quantum-enhanced differential atom interferometers and clocks with spin-squeezing swapping
• Separating the output ports of a Bragg interferometer via velocity selective transport
• Estimating gravity acceleration from static atomic gravimeter by Kalman filtering
• Demonstration of static atomic gravimetry using Kalman filter