Telecom-heralded entanglement between remote multimode solid-state quantum memories

Understand

Future quantum networks will enable the distribution of entanglement between distant locations and allow applications in quantum communication, quantum sensing and distributed quantum computation.

• At the core of this network lies the ability of generating and storing entanglement at remote, interconnected quantum nodes.
• While remote physical systems of various nature have been successfully entangled, none of these realisations encompassed all of the requirements for network operation, such as telecom-compatibility and multimode operation.
• Here we report the demonstration of heralded entanglement between two spatially separated quantum nodes, where the entanglement is stored in multimode solid-state quantum memories.