(a) Schematic diagram of atoms trapped on a persistent-supercurrent atom chip. (b) TOF images after evaporative cooling. vf represents the final radio frequency of the evaporative cooling. (c) Cross-sections of the optical density along the dotted line in Fig. (b).

 　　

Bose-Einstein Condensate on a Persistent-Supercurrent Atom Chip

We achieved ⁸⁷Rb Bose-Einstein condensate (BEC) on a persistent supercurrent atom chip by a radio frequency induced evaporative cooling. The condensation was verified by the time-of-flight (TOF) imaging of the bimodal momentum distribution obtained at v_f = 1.750 MHz. (Page 39)

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