Freiburg 2019 – wissenschaftliches Programm

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FM: Fall Meeting

FM 77: Quantum Networks: Platforms and Components II

FM 77.3: Talk

Donnerstag, 26. September 2019, 14:45–15:00, 1098

Quantum networking tools with single atoms and single photons — •Stephan Kucera, Pascal Eich, Matthias Bock, Matthias Kreis, Jan Arenskötter, Christoph Becher, and Jürgen Eschner — Universität des Saarlandes, Experimentalphysik, 66123 Saarbrücken

In the context of quantum communication technologies, we are developing a comprehensive set of experimental tools, based on single photons and single atoms (trapped ions), that enable controlled generation, storage, transmission, and conversion of photonic qubits in quantum networks in a programmable manner [1,2]. As experimental applications, we demonstrate high-fidelity transfer of entanglement from a narrowband SPDC photon pair to atom-photon pairs, as well as atom-to-photon qubit teleportation [3]. We also extend our quantum network toolbox into the telecom regime by polarization-preserving quantum frequency conversion of atom-entangled photons [4].

[1] C. Kurz et al., Nat. Commun. 5, 5527 (2014)

[2] C. Kurz et al., Phys. Rev. A 93, 062348 (2016)

[3] S. Kucera et al., in preparation

[4] M. Bock et al., Nat. Commun. 9, 1998 (2018)