Buil­ding an In­ter­cam­pus Entan­gle­ment-Sha­ring Quan­tum Net­work | Vor­trag von E. Fi­guer­oa

Die Arbeitsgruppe Hybrid Quantum Photonics Devices begrüßt in dieser Woche Eden Figueora von der Stony Brook University und dem Brookhaven National Laboratory (New York) als Gast. In einem Vortrag am 04.08.2023 um 10.00 Uhr im Hörsaal A1 gibt Eden Figueroa einen Überblick darüber, wie man ein Quantennetzwerk mit HIlfe des sogenannten Stack Approaches errichten kann. Dies ist eine großartige Gelegenheit für alle, die einen informationswissenschaftlichen Hintergrund haben oder daran interessiert sind, etwas über Quantennetzwerke zu lernen.


Building an intercampus entanglement-sharing quantum network (Eden Figueroa, Stony Brook University and Brookhaven National Laboratory)

The goal of quantum communication is to transmit quantum states between distant sites. The key aspect to achieve this goal is the generation of entangled states over long distances.  Such states can then be used to faithfully transfer classical and quantum states via quantum teleportation. This is an exciting new direction which establishes the fundamentals of a new quantum internet. The big challenge, however, is that the entanglement rates generated between two distant sites decreases exponentially with the length of the connecting channel. To overcome this difficulty, the new concepts of entanglement swapping, and quantum repeater operation are needed.

In this talk we will show our progress towards building a quantum network of many quantum devices capable of distributing entanglement over long distances connecting Stony Brook University and the Brookhaven National Laboratory on Long Island, New York. We will show how to produce photonic quantum entanglement in the laboratory and how to store it and distribute it by optically manipulating the properties of atomic clouds. Finally, we will discuss our recent experiments in which several quantum devices are already interconnected forming an elementary version of a quantum-enabled internet.

Symbolbild (Universität Paderborn, Besim Mazhiqi)