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Q: Fachverband Quantenoptik und Photonik

Q 23: Poster 2: Intersectional Session

Q 23.38: Poster

Dienstag, 15. März 2011, 18:00–21:00, P1

Efficient single-mode fiber coupling of photons from a single ion — •Christoph Kurz¹, Jan Huwer^1,2, Michael Schug¹, José Brito¹, Philipp Müller¹, Joyee Ghosh^1,2, and Jürgen Eschner^1,2 — ¹Universität des Saarlandes, Experimentalphysik, Campus E2.6, 66123 Saarbrücken — ²Institut de Ciències Fotòniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona)

We operate two independent linear Paul traps with single ⁴⁰Ca⁺ ions, which provides a highly modular setup for implementing quantum information processing and communication tools [1, 2]. In one application, a trapped ion is used to efficiently generate single photons, which are then coupled to a single-mode fiber. Here we present a significant improvement over previous measurements [1] by optimising the fiber coupling and making use of constructive interference of light from the ion and its mirror image.

[1] M. Almendros et al., PRL 103, 213601 (2009)

[2] N. Piro et al., DOI: 10.1038/NPHYS1805