A large-scale quantum network, where many nodes are connected via entanglement and can share and process quantum information, holds the promise of unprecedented applications ranging from distributed quantum computing to enhanced quantum sensing and secure communication. Color centers in diamond, with their excellent optical properties, long spin coherence times, and versatile control over local nuclear spins, are one of the leading pla@orms for building network nodes that can share entanglement using photonic quantum links.

The tin-vacancy (SnV) center is a resourceful pla@orm which features an efficient optical interface, coherent spin operation at temperatures around 1K and compatibility with nanophotonic integrated devices, thanks to the first-order insensitivity to electric field fluctuations. Together with the recent developments in all-diamond nanofabrication and hybrid integrated photonics, this makes the SnV promising for realizing scalable and on-chip devices.

This talk will introduce quantum networks and focus on our work toward realizing a spin-photon interface based on SnV centers, to use it as a building block for quantum network applica;ons. In doing this, we will present our recent results on the integration of SnV in all-diamond nanophotonic waveguides, and discuss a framework to design and compare protocols for remote entanglement generation.