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Berlin 2014 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology

Q 16.22: Poster

Monday, March 17, 2014, 16:30–18:30, Spree-Palais

Towards strong coupling in an ion-trap fiber-cavity apparatus — •Klemens Schüppert1, Birgit Brandstätter1, Bernardo Casabone1, Konstantin Friebe1, Sebastien Garcia2, Jakob Reichel2, Tracy Northup1, and Rainer Blatt2,31Institute of Experimental Physics, University Innsbruck, Austria — 2Laboratoire Kastler Brossel ENS / UPMC-Paris 6 / CNRS, Paris, France — 3Institute of Quantum Optics and Quantum Information, Innsbruck, Austrian Academy of Sciences

With atoms coupled to optical cavities it is possible to build up quantum interfaces between stationary and flying qubits. A quantum network based on these interfaces offers a compelling solution to the challenge of scalability in quantum computing. By using fiber-based cavities, we expect to reach the strong coupling regime of cavity quantum electrodynamics with single ions, which has not previously been accessed.

To that end, we are further developing and testing the laser ablation of fiber facets, which are then coated to produce high-finesse fiber mirrors. Specifically, we plan to produce cavities of about 8 µm mode waist and 500 µm in length for use in our integrated ion-trap cavity setup. In parallel, we are currently optimizing trapping parameters for calcium ions in our miniaturized trap.

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