<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">K</mml:mi><mml:mprescripts/><mml:none/><mml:mn>39</mml:mn></mml:mmultiscripts></mml:math>Bose-Einstein Condensate with Tunable Interactions
G. RoatiLENS and Dipartimento di Fisica, Università di Firenze, INFN and CNR-INFM, 50019 Sesto Fiorentino, ItalyMatteo ZaccantiLENS and Dipartimento di Fisica, Università di Firenze, INFN and CNR-INFM, 50019 Sesto Fiorentino, ItalyChiara D’ErricoLENS and Dipartimento di Fisica, Università di Firenze, INFN and CNR-INFM, 50019 Sesto Fiorentino, ItalyJacopo CataniLENS and Dipartimento di Fisica, Università di Firenze, INFN and CNR-INFM, 50019 Sesto Fiorentino, ItalyM. ModugnoLENS and Dipartimento di Matematica Applicata, Università di Firenze, INFN, and BEC-INFM Center, Università di Trento, I-38050 Povo, ItalyA. SimoniLaboratoire de Physique des Atomes, Lasers, Molécules et Surfaces, Unités Mixtes de Recherche 6627 du CNRS and Université de Rennes, 35042 Rennes Cedex, FranceM. InguscioLENS and Dipartimento di Fisica, Università di Firenze, INFN and CNR-INFM, 50019 Sesto Fiorentino, ItalyGiovanni Carlo ModugnoLENS and Dipartimento di Fisica, Università di Firenze, INFN and CNR-INFM, 50019 Sesto Fiorentino, Italy
2007lv
ABI
Аннотация
We produce a Bose-Einstein condensate of 39K atoms. Condensation of this species with a naturally small and negative scattering length is achieved by a combination of sympathetic cooling with 87Rb and direct evaporation, exploiting the magnetic tuning of both inter- and intraspecies interactions at Feshbach resonances. We explore the tunability of the self-interactions by studying the expansion and the stability of the condensate. We find that a 39K condensate is interesting for future experiments requiring a weakly-interacting Bose gas.
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Цитирований: 3Использованных источников: 0