Photon-mediated interactions between quantum emitters in a diamond nanocavity

摘要

Photon-mediated interactions between quantum systems are essential for realizing quantum networks and scalablequantum information processing. We demonstrate such interactions between pairs of silicon-vacancy (SiV) colorcenters strongly coupled to a diamond nanophotonic cavity. When the optical transitions of the two color centersare tuned into resonance, the coupling to the common cavity mode results in a coherent interaction betweenthem, leading to spectrally-resolved superradiant and subradiant states. We use the electronic spin degrees offreedom of the SiV centers to control these optically-mediated interactions. Our experiments pave the way forimplementation of cavity-mediated quantum gates between spin qubits and for realization of scalable quantumnetwork nodes.