Opto-electronic T centre quantum processors

Silicon colour centres are an emerging quantum information platform with technological appeal: they emit in or near the optical telecommunications bands, host long coherence spin qubits, and integrate with silicon photonic and electronic circuits for scalable on-chip fabrication. In particular, the silicon T centre has been identified as a candidate for distributed quantum computing. Cavity-integrated T centres show dramatic Purcell enhancements, enabling faster and more coherent emission. Indistinguishable emission from separate T centre devices has enabled entanglement between T centre processors in separate cryostats. In this talk, I present the most recent T centre entanglement results and introduce a new class of opto-electronic T centre devices combining optical resonators and PIN junctions. These devices enable a host of new spin-photon techniques including electrically-injected single-photon emission, electrical spin initialization, and electrically-triggered remote entanglement schemes. These techniques expand the toolbox of controls available for T centre processors and can be readily extended to other silicon colour centres including the popular G and W centres.