Gravity measurements below $10^{-9}$ $g$ with a transportable absolute quantum gravimeter

Abstract

Gravimetry is a well-established technique for the determination of sub-surface mass distribution needed in several fields of geoscience, and various types of gravimeters have been developed over the last 50 years. Among them, quantum gravimeters based on atom interferometry have shown top-level performance in terms of sensitivity, long-term stability and accuracy. Nevertheless, they have remained confined to laboratories due to their complex operation and high sensitivity to the external environment. Here we report on a novel, transportable, quantum gravimeter that can be operated under real world conditions by non-specialists, and measure the absolute gravitational acceleration continuously with a long-term stability below 10~nm.s${}^{-2}$ (1~$\mu$Gal). It features several technological innovations that allow for high-precision gravity measurements, while keeping the instrument light and small enough for field measurements. The instrument was characterized in detail and its stability was evaluated during a month-long measurement campaign.

References in corpus (9)

• Detecting inertial effects with airborne matter-wave interferometry
• Stability comparison of two absolute gravimeters: optical versus atomic interferometers
• Compact cold atom gravimeter for field applications
• A cold atom pyramidal gravimeter with a single laser beam
• Hybridizing matter-wave and classical accelerometers
• Operating an atom interferometer beyond its linear range
• A laser setup for rubidium cooling dedicated to space applications
• Narrow linewidth single laser source system for onboard atom interferometry
• Active Control of Laser Wavefronts in Atom Interferometers

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