Regensburg 2022 – wissenschaftliches Programm

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QI: Fachverband Quanteninformation

QI 4: Poster: Quantum Information

QI 4.8: Poster

Montag, 5. September 2022, 18:00–20:00, P2

Simulating quantum repeaters with experimentally relevant parameters — •Julius Wallnöfer1, Fabian Wiesner1, Frederik Hahn1, Nathan Walk1, and Jens Eisert1,21Dahlem Center for Complex Quantum Systems, Freie Universität Berlin, 14195 Berlin, Germany — 2Helmholtz-Zentrum Berlin für Materialien und Energie, 14109 Berlin, Germany

The quantum repeater protocol is a well established standard for distributing entanglement over long distances. However, there are a number of open questions when considering setups that go beyond the standard scenarios and error models. We have developed a numerical simulation platform for quantum repeaters to explore in multiple directions:

(i) With experiments of small scale quantum repeaters becoming a reality, it is of high interest to explore detailed error models that are close the real situations found in the experiment. Our simulation allows us to not only compare setups with different parameters, but also to assess the effect of improving certain aspects has on e.g. the achievable key rate.

(ii) We explore conceptual questions in larger scale quantum repeaters outside of standard situations - especially in asymmetric setups where e.g. the length or quality of quantum channels is not identical. Furthermore, we investigate strategies for quantum repeaters when considering entanglement purification and multi-mode memories.

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