Josephson Junction Arrays with Bose-Einstein Condensates
By F. Cataliotti, S. Burger, C. Fort, P. Maddaloni, F. Minardi, A. Trombettoni, Augusto Smerzi, M. Inguscio. Science, 2001
621 citations recorded by the source corpus.
We report on the direct observation of an oscillating atomic current in a one-dimensional array of Josephson junctions realized with an atomic Bose-Einstein condensate. The array is created by a laser standing wave, with the condensates trapped in the valleys of the periodic potential and weakly coupled by the interwell barriers. The coherence of multiple tunneling between adjacent wells is continuously probed by atomic interference. The square of the small-amplitude oscillation frequency is proportional to the microscopic tunneling rate of each condensate through the barriers and provides a direct measurement of the Josephson critical current as a function of the intermediate barrier heights. Our superfluid array may allow investigation of phenomena so far inaccessible to superconducting Josephson junctions and lays a bridge between the condensate dynamics and the physics of discrete nonlinear media.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/4c54a2c2047a77b90f7d8c8ca13efa39d0834cdc
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In Artificial Intelligence
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Citations in the corpus
- Theory of ultracold atomic Fermi gases (2007, background): “These oscillations have already been observed in Bose-Einstein condensates (Cataliotti et al., 2001) and are expected to occur also in Fermi superfluids (Pitaevskii, Stringari and Orso, 2005).”
- Exploring quantum matter with ultracold atoms in optical lattices (2005, background): “In the superfluid regime (Cataliotti et al 2001), phase coherence of the matter wave field across the lattice characterizes the many-body state.”
- Dynamics of Bose-Einstein condensates in optical lattices (2006, methodology): “In the context of BECs in optical lattices, this was investigated theoretically as well as experimentally by Cataliotti et al. 2001 .”
- A bosonic Josephson junction (2007, background): “Later, in 2001, also the Josephson dynamics was observed with Josephson junction arrays [52].”
- 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].”