Build­ing an In­ter­cam­pus En­tan­gle­ment-Shar­ing Quantum Net­work | Talk by E. Figueroa

The hqpd group hosts Eden Figueroa, Stony Brook University and Brookhaven National Laboratory (US) this week. In a talk on Friday 04.08.23 at 10:00am (sharp) in the A1 lecture hall, Eden Figueroa will give an overview of how to construct a quantum network using a stack approach. This is a great opportunity for everyone with any information science background or interest to learn about quantum networks.


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.

Symbolic Picture (Paderborn University, Besim Mazhiqi)