title: Inductively guided circuits for ultracold dressed atoms.
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, (7)Li and (87)Rb), 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.
authors.affiliation: Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, UK.
authors.forename: German A
authors.initials: GA
authors.lastname: Sinuco-León
authors.affiliation: Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, UK.
authors.forename: Kathryn A
authors.initials: KA
authors.lastname: Burrows
authors.affiliation: Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, UK.
authors.forename: Aidan S
authors.initials: AS
authors.lastname: Arnold
authors.affiliation: Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, UK.
authors.forename: Barry M
authors.initials: BM
authors.lastname: Garraway