Distributed Quantum Computing in Silicon

Commercially impactful quantum algorithms require a massive number of qubits and applied gates, far beyond the capacity of existing quantum processors. Distributed architectures, which scale horizontally by networking modules, provide a route to commercial utility and to surpass the capability of an individual quantum computing module. Such processors consume remote entanglement distributed between modules to realize distributed quantum logic. Here we present preliminary demonstrations of some key distributed quantum computing protocols on T centres integrated in photonic devices in isotopically-enriched silicon [1]. We first demonstrate all single and two qubit operations internal to the T centre. We then show distribution of entanglement between modules, and consume it to apply a teleported gate sequence, establishing a proof-of-concept for T centres as a distributed quantum computing and networking platform.

[1] Photonic Inc., “Distributed Quantum Computing in Silicon”, Arxiv:2406.01704.