Dual matter-wave inertial sensors in weightlessness

Brynle Barrett (), Laura Antoni-Micollier, Laure Chichet, Baptiste Battelier, Thomas Lévèque, Arnaud Landragin and Philippe Bouyer
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Brynle Barrett: LP2N, IOGS, CNRS and Université de Bordeaux
Laura Antoni-Micollier: LP2N, IOGS, CNRS and Université de Bordeaux
Laure Chichet: LP2N, IOGS, CNRS and Université de Bordeaux
Baptiste Battelier: LP2N, IOGS, CNRS and Université de Bordeaux
Thomas Lévèque: CNES
Arnaud Landragin: LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06
Philippe Bouyer: LP2N, IOGS, CNRS and Université de Bordeaux

Nature Communications, 2016, vol. 7, issue 1, 1-9

Abstract: Abstract Quantum technology based on cold-atom interferometers is showing great promise for fields such as inertial sensing and fundamental physics. However, the finite free-fall time of the atoms limits the precision achievable on Earth, while in space interrogation times of many seconds will lead to unprecedented sensitivity. Here we realize simultaneous 87Rb–39K interferometers capable of operating in the weightless environment produced during parabolic flight. Large vibration levels (10−2 g Hz−1/2), variations in acceleration (0–1.8 g) and rotation rates (5° s−1) onboard the aircraft present significant challenges. We demonstrate the capability of our correlated quantum system by measuring the Eötvös parameter with systematic-limited uncertainties of 1.1 × 10−3 and 3.0 × 10−4 during standard- and microgravity, respectively. This constitutes a fundamental test of the equivalence principle using quantum sensors in a free-falling vehicle. Our results are applicable to inertial navigation, and can be extended to the trajectory of a satellite for future space missions.

Date: 2016
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DOI: 10.1038/ncomms13786

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