Differential phase extraction in dual interferometers exploiting the correlation between classical and quantum sensors

Abstract

We perform the experimental demonstration of the method proposed in [Phys. Rev. A 91, 063615 (2015)] to extract the differential phase in dual atom interferometers. From a single magneto-optical trap, we generate two atomic sources, vertically separated and free-falling synchronously, with the help of an accelerated lattice. We drive simultaneous Raman interferometers onto the two sources, and use the correlation with the vibration signal measured by a seismometer to extract the phase of each interferometer. We demonstrate an optimal sensitivity of the extracted differential phase between the two interferometers, free from vibration noise and limited by detection noise, when the two interferometers are in phase.

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Cited by in corpus (6)

• Simultaneous accurate determination of both gravity and its vertical gradient
• Exploring the Foundations of the Universe with Space Tests of the Equivalence Principle
• Proof-of-principle demonstration of vertical gravity gradient measurement using a single proof mass double-loop atom interferometer
• A prototype industrial laser system for cold atom inertial sensing in space
• Separating the output ports of a Bragg interferometer via velocity selective transport
• Lieb-Mattis states for robust entangled differential phase sensing