Inductively guided circuits for ultracold dressed atoms

German A. Sinuco-León (), Kathryn A. Burrows, Aidan S. Arnold and Barry M. Garraway
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German A. Sinuco-León: University of Sussex, Falmer
Kathryn A. Burrows: University of Sussex, Falmer
Aidan S. Arnold: SUPA, University of Strathclyde
Barry M. Garraway: University of Sussex, Falmer

Nature Communications, 2014, vol. 5, issue 1, 1-7

Abstract: Abstract Recent progress in optics, atomic physics and material science has paved the way to study quantum effects in ultracold atomic alkali gases confined to non-trivial geometries. Multiply connected traps for cold atoms can be prepared by combining inhomogeneous distributions of DC and radio-frequency electromagnetic fields with optical fields that require complex systems for frequency control and stabilization. Here we propose a flexible and robust scheme that creates closed quasi-one-dimensional guides for ultracold atoms through the ‘dressing’ of hyperfine sublevels of the atomic ground state, where the dressing field is spatially modulated by inductive effects over a micro-engineered conducting loop. Remarkably, for commonly used atomic species (for example, 7Li and 87Rb), the guide operation relies entirely on controlling static and low-frequency fields in the regimes of radio-frequency and microwave frequencies. This novel trapping scheme can be implemented with current technology for micro-fabrication and electronic control.

Date: 2014
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DOI: 10.1038/ncomms6289

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