Reconfigurable self-sufficient traps for ultracold atoms based on a superconducting square

M. Siercke, K. S. Chan, B. Zhang, M. Beian, M. J. Lim, R. Dumke

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


We report on the trapping of ultracold atoms in the magnetic field formed entirely by persistent supercurrents induced in a thin film type-II superconducting square. The supercurrents are carried by vortices induced in the two-dimensional (2D) structure by applying two magnetic field pulses of varying amplitude perpendicular to its surface. This results in a self-sufficient quadrupole trap that does not require any externally applied fields. We investigate the trapping parameters for different supercurrent distributions. Furthermore, to demonstrate possible applications of these types of supercurrent traps we show how a central quadrupole trap can be split into four traps by use of a bias field, as predicted by Zhang.

Original languageEnglish (US)
Article number041403
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number4
StatePublished - Apr 23 2012

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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