Dual Open Atom Interferometry for Compact and Mobile Quantum Sensing

TL;DR

This paper introduces a dual open atom interferometry method suitable for dynamic platforms, enabling precise, stable measurements of inertial quantities like gravitational tides in mobile quantum sensors.

Contribution

The paper presents a novel dual open atom interferometry protocol that maintains long-term stability and accuracy on dynamic platforms, advancing mobile quantum sensing capabilities.

Findings

Achieved 4.5 μGal precision in gravitational tide measurements

Demonstrated long-term phase stability in open atom interferometry

Validated the protocol with 2000 measurement runs over 6.7 hours

Abstract

We demonstrate an atom interferometer measurement protocol compatible with operation on a dynamic platform. Our method employs two open interferometers, derived from the same atomic source, with different interrogation times to eliminate initial velocity dependence while retaining precision, accuracy, and long term stability. We validate the protocol by measuring gravitational tides, achieving a precision of 4.5 {\mu}Gal in 2000 runs (6.7 h), marking the first demonstration of inertial quantity measurement with open atom interferometry that achieves long-term phase stability.