Magnetic Dipolar Interaction in a Bose-Einstein Condensate Atomic Interferometer
Authors: Fattori M., Roati G., Deissler B., D’Errico C., Zaccanti M., Jona-Lasinio M., Santos L., Inguscio M., Modugno G.
Autors Affiliation: LENS and Dipartimento di Fisica, Università di Firenze, and INFM-CNR, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy;
Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi,” Compendio del Viminale, 00184 Roma, Italy;
INFN, Sezione di Firenze, Via Sansone 1, 50019 Sesto Fiorentino, Italy;
Institut für Theoretische Physik, Leibniz Universität, D-30167 Hannover, Germany
Abstract: We study the role played by the magnetic dipole interaction in the decoherence of a lattice-based interferometer that employs an alkali Bose-Einstein condensate with a tunable scattering length. The different behavior we observe for two different orientations of the dipoles gives us evidence of the anisotropic character of the interaction. The experiment is correctly reproduced by a model we develop only if the long-range interaction between different lattice sites is taken into account. Our model indicates that dipolar interaction can be compensated by a proper choice of the scattering length and that the magnetic dipole interaction should not represent an obstacle for atom interferometry with Bose-Einstein condensates with a tunable interaction.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 101 (19) Pages from: 190405 to: 190405
More Information: We acknowledge discussions with A. Simoni, M. Modugno, and the rest of the quantum gases group at LENS. This work was supported by MIUR (PRIN 2006), by EU (MEIF-CT-2004-009939), by INFN, by ESF through the EUROQUASAR program (QuDeGPM project), by DFG (SPP1116, SFB407), and by Ente CRF, Firenze. B. D. acknowledge support under ESA contract SAI 20578/07/NL/UJ.KeyWords: Atomic physics; Atoms; Bose-Einstein condensation; Interferometers; Interferometry; Optical instruments; Steam condensers, Atom interferometries; Atomic interferometers; Decoherence; Dipolar interactions; Einstein condensates; Lattice sites; Long-range interactions; Magnetic dipolar interactions; Magnetic dipole interactions; Scattering lengths, Flow interactionsDOI: 10.1103/PhysRevLett.101.190405Citations: 88data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-06-04References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here