Erlangen 2018 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster: Quantum Optics and Photonics V

Q 62.59: Poster

Donnerstag, 8. März 2018, 16:15–18:15, Redoutensaal

Fiber-cavity-based single-photon single-atom interface — •Elvira Keiler, Wolfgang Alt, Jose Gallego, Tobias Macha, Deepak Pandey, Eduardo Urunuela, Jian Wang, and Dieter Meschede — Institut für Angewandte Physik der Universität Bonn, Wegelerstr. 8, 53115 Bonn

We present our work on a photon-atom interface composed of an optical fiber-based Fabry-Pérot cavity and small ⁸⁷Rb ensembles. The small mode volume of fiber cavities allows us to remain in the strong coupling regime even for high cavity bandwidths. In this way, photon pulses even shorter than the atomic lifetime can be stored in the ensemble via stimulated Raman adiabatic passages. For this method, we calculate optimal pulse shapes [1] and generate them with a combination of fast arbitrary waveform generators and electro-optical modulators. Since the photon can be retrieved with the readout Raman pulse, the system realizes one of the building blocks necessary for quantum repeaters.

[1] Jerome Dilley, Peter Nisbet-Jones, Bruce W. Shore, and Axel Kuhn, Single-photon absorption in coupled atom-cavity systems, Phys. Rev. A 85, 023834 (2012).