Bose-Einstein condensation on a superconducting atom chipC. Roux1, A. Emmert1, A. Lupascu1, T. Nirrengarten1, G. Nogues1, M. Brune1, J.-M. Raimond1 and S. Haroche1, 2
1 Laboratoire Kastler Brossel, ENS, UPMC, CNRS - 24 rue Lhomond, 75005 Paris, France
2 Collège de France - 11 place Marcelin Berthelot, 75005 Paris, France
received 4 December 2007; accepted in final form 18 January 2008; published March 2008
published online 19 February 2008
We have produced a Bose-Einstein condensate (BEC) on an atom chip using only superconducting wires in a cryogenic environment. We observe the onset of condensation for 1104 atoms at a temperature of 100 nK. This result opens the way for studies of atom losses and decoherence in a BEC interacting with a superconducting surface. Studies of dipole-blockade with long-lived Rydberg atoms in a small and dense atomic sample are underway.
67.85.-d - Ultracold gases, trapped gases.
37.10.Gh - Atom traps and guides.
03.75.Gg - Entanglement and decoherence in Bose-Einstein condensates.
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