Optically addressable electron spin clusters are of interest for quantum computation,
simulation and sensing. However, with interaction length scales of a few tens of nanometers …

Solid-state spin defects, such as color centers in diamond, are among the most promising
candidates for scalable and integrated quantum technologies. In particular, the good optical …

Quantum networks require spin-photon interfaces capable of generating entanglement
between a stationary qubit and flying photons. So far, such an interface with a large …