Regensburg 2022 – wissenschaftliches Programm

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SYED: Entanglement Distribution in Quantum Networks

SYED 1: Entanglement Distribution in Quantum Networks

SYED 1.3: Hauptvortrag

Mittwoch, 7. September 2022, 10:30–11:00, H1

Entanglement distribution with minimal memory requirements using time-bin photonic qudits — •Johannes Borregaard — QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2628 CJ, Delft, The Netherlands

Generating multiple entangled qubit pairs between distributed nodes is a prerequisite for a future quantum internet. To achieve a practicable generation rate, standard protocols based on photonic qubits require multi-qubit quantum memories with long coherence times, which remains a significant experimental challenge. In this talk, I will discuss a novel protocol based on time-bin photonic qudits that allow for the simultaneous generation of multiple entangled pairs between two distributed qubit registers. By adopting the qudit protocol, the required memory time is independent of the transmission loss between the nodes in contrast to standard qubit approaches. Consequently, a significant boost of the capabilities of near-term quantum communication hardware can be achieved paving the way for a practical quantum internet.

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