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arXiv · 2203.07965

Supporting multiple entanglement flows through a continuous-variable quantum repeater

Ian J. Tillman·Allison Rubenok·Saikat Guha·Kaushik P. Seshadreesan
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Abstract

Quantum repeaters are critical to the development of quantum networks, enabling rates of entanglement distribution beyond those attainable by direct transmission. We consider multiple continuous-variable, squeezed light-based entanglement flows through a repeater involving noiseless linear amplification and dual homodyne detection. By analyzing a single-repeater-enhanced channel model with asymmetric losses across the repeater, we determine optimal placements of the central repeater hub in a 4-user hub-and-spoke network such that the rate of each entanglement flow through the hub is enhanced.

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Ian J. Tillman, Allison Rubenok, Saikat Guha, Kaushik P. Seshadreesan. 2022-10-13. Supporting multiple entanglement flows through a continuous-variable quantum repeater. https://doi.org/10.1103/physreva.106.062611

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