Trapping Atoms with a Persistent Supercurrent Atom Chip

In this presentation we report an achievement of a persistent supercurrent atom chip and trapping ⁸⁷Rb atoms in the vicinity of a cold surface. Persistent supercurrent, up to 2.5 A without Joule heating, was switched on and off by using an on-chip thermal switch that was operated with a laser and a magnetic field. An intensity of the induced supercurrent was controlled by the magnitude of the initially applied z-bias field. We present our experimental results on the characteristics of our atom trap including stability, decoherence time, and influence of the chip surface.