Magnetic Dipolar Interaction in a Bose-Einstein Condensate Atomic Interferometer

Journal Article · Fri Nov 07 00:00:00 EST 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.190405· OSTI ID:21179879

Fattori, M ^[1]; Roati, G; D'Errico, C; Inguscio, M; Modugno, G ^[1]; Deissler, B; Zaccanti, M; Jona-Lasinio, M ^[1]; Santos, L ^[2]

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1. LENS and Dipartimento di Fisica, Universita di Firenze, and INFM-CNR, Via Nello Carrara 1, 50019 Sesto Fiorentino (Italy)
2. Institut fuer Theoretische Physik, Leibniz Universitaet, D-30167 Hannover (Germany)

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.

• OSTI ID: 21179879
• Journal Information: Physical Review Letters, Vol. 101, Issue 19; Other Information: DOI: 10.1103/PhysRevLett.101.190405; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANISOTROPY
BOSE-EINSTEIN CONDENSATION
INTERACTION RANGE
INTERACTIONS
INTERFEROMETERS
INTERFEROMETRY
MAGNETIC DIPOLES
SCATTERING LENGTHS