Interacting quantum mixtures for precision atom interferometry. (11th December 2020)

• Record Type: Journal Article
• Authors: Corgier, Robin; Loriani, Sina; Ahlers, Holger; Posso-Trujillo, Katerine; Schubert, Christian; Rasel, Ernst M; Charron, Eric; Gaaloul, Naceur
• Is Part Of: New journal of physics. Volume 22:Number 12(2020:Dec.)
• Publication Date: 2020-12-11
• Subjects: Bose–Einstein condensate -- quantum mixtures -- atom interferometry -- scaling approach -- equivalence principle -- interacting quantum gases -- precision tests; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/abcbc8
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: We present a source engineering concept for a binary quantum mixture suitable as input for differential, precision atom interferometry with drift times of several seconds. To solve the non-linear dynamics of the mixture, we develop a set of scaling approach equations and verify their validity contrasting it to the one of a system of coupled Gross–Pitaevskii equations. This scaling approach is a generalization of the standard approach commonly used for single species. Its validity range is discussed with respect to intra- and inter-species interaction regimes. We propose a multi-stage, non-linear atomic lens sequence to simultaneously create dual ensembles with ultra-slow kinetic expansion energies, below 15 pK. Our scheme has the advantage of mitigating wave front aberrations, a leading systematic effect in precision atom interferometry.