Superfluid current disruption in a chain of weakly coupled Bose–Einstein condensates

By F. Cataliotti, L. Fallani, F. Ferlaino, C. Fort, P. Maddaloni, M. Inguscio. 2003

133 citations recorded by the source corpus.

We report the experimental observation of the disruption of the superfluid atomic current flowing through an array of weakly linked Bose–Einstein condensates. The condensates are trapped in an optical lattice superimposed on a harmonic magnetic potential. The dynamical response of the system to a change of the magnetic potential minimum along the optical lattice axis goes from a coherent oscillation (superfluid regime) to a localization of the condensates in the harmonic trap (‘classical’ insulator regime). The localization occurs when the initial displacement is larger than a critical value or, equivalently, when the velocity of the wavepacket’s centre of mass is larger than a critical velocity dependent on the rate of tunnelling between adjacent sites.

Subfields: Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/eeaa81d334e3958b8b95c83f7ff44c76268708b3

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In Atomic and Molecular Physics, and Optics

1. Dimitri J. Frantzeskakis
2. Panayotis G. Kevrekidis
3. Boris A. Malomed

Citations in the corpus

• Stability of discrete solitons in nonlinear Schrödinger lattices (2005, background): “An array of Bose-Einstein condensate droplets trapped in a strong optical lattice with thousands of atoms in each droplet, is another direct physical realization of the discrete NLS equation [5, 6].”