Silicon Quantum Computing

PsiQuantum announced an optical circuit switch built on an advanced low-loss silicon photonics platform. The technology is aimed at routing data optically rather than electronically, a capability relevant to scaling large computing systems, including the quantum machines the company is developing. Details on performance and availability were not provided in the announcement, but the claim of a low-loss silicon photonics platform has drawn attention in technical communities discussing data center networking and photonic interconnects.

Researchers report controlling five silicon qubits using only a single control line, a result in quantum computing hardware. Silicon spin qubits are attractive because they could be manufactured with existing chip industry techniques, and reducing wiring is a major obstacle to scaling quantum processors. The claim is being circulated as a physics development, but no further details about the team, journal, or replication are available.

Chipmaker Wolfspeed has commercially introduced a transparent silicon carbide technology aimed at augmented reality optics and quantum computing applications. The announcement, picked up by financial news outlets including Morningstar, positions the material as a novel platform combining transparency with silicon carbide's semiconductor properties. The move signals Wolfspeed's push to expand beyond power electronics into emerging photonics and quantum markets.

US semiconductor maker Wolfspeed has introduced optical-grade silicon carbide materials aimed at augmented reality devices and quantum computing applications. The announcement positions the company's silicon carbide expertise, traditionally used in power electronics, toward emerging photonics markets where transparent, high-purity substrates are needed. Industry coverage is focused on whether the material can become a standard platform for next-generation AR optics and quantum systems.

Australian quantum computing company Diraq is drawing attention for its work on making computers quantum, according to a Reuters report. The company is focused on developing silicon-based quantum processors, an approach seen as a potential path to scalable quantum machines. Details beyond the headline are limited, with no specific announcement or milestone reported.

US semiconductor manufacturer SkyWater Technology has introduced its OnRamp foundry program and detailed its SP90 200 mm silicon nitride platform aimed at quantum photonics production. The offering is intended to help researchers and companies move photonic quantum designs into manufacturing. Industry coverage is focused on what the platform means for scaling quantum computing hardware.