Phys.org July 13, 2022
The global quantum internet will require long-lived, telecommunications-band photon–matter interfaces manufactured at scale. Preliminary quantum networks based on photon–matter interfaces that meet a subset of these demands are encouraging efforts to identify new high-performance alternatives. Silicon is an ideal host for commercial-scale solid-state quantum technologies. It is already an advanced platform within the global integrated photonics and microelectronics industries, as well as host to record-setting long-lived spin qubits. Despite the overwhelming potential of the silicon quantum platform, the optical detection of individually addressable photon–spin interfaces in silicon have remained elusive. In their work researchers in Canada integrated individually addressable ‘T centre’ photon–spin qubits in silicon photonic structures and characterized their spin-dependent telecommunications-band optical transitions. These results unlock immediate opportunities to construct silicon-integrated, telecommunications-band quantum information networks….read more. TECHNICAL ARTICLEÂ
Integrating and optically coupling the T centre. Credit: Nature volume 607, pages266–270 (2022)Â