Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster 2

Q 35.65: Poster

Mittwoch, 14. März 2012, 16:30–19:00, Poster.I+II

A nanofiber optical interfacing for trapped ions — •Jan Petersen1, Benjamin Ames2, Michael Brownnutt2, Rainer Blatt2,3, and Arno Rauschenbeutel11VCQ, TU Wien – Atominstitut, Stadionallee 2, A-1020 Wien — 2Institut für Experimentalphysik, Unversität Innsbruck, Technikerstr. 25, A-6020 Innsbruck — 3Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, A-6020 Innsbruck

Optical nanofiber have proven to be a versatile tool for the efficient coupling of light and matter. As an example, atoms and molecules have recently been coupled to the intense evanescent light field around such nanofibers. We plan to extend this method to interfacing trapped ions with optical nanofibers in order combine the advantageous properties of the respective systems. For this purpose, we integrate an optical nanofiber into a Paul trap which allows one to position the ions with a precision of a few nanometers by tuning the trapping potentials. Given that the ion has to be placed in close vicinity (∼ 100 nm) of the nanofiber surface, stray charges on the fiber surface have to be avoided. We discuss possibilities and present results towards coating the fibers to tackle this problem. In an alternative trapping scheme, we aim to employ nonlinearities using the intense light field on the nanofiber surface. The resulting electromagnetic difference frequency fields might be suitable for realizing a trapping potential for ions.

Financial support by ERA-Net Research Network “Nanofibre Optical Interfaces", the Volkswagen Foundation and the ESF is gratefully acknowledged.

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