The Quantum Journal

Insider Brief The alarm over Google Quantum AI’s latest findings has centered on risk, but the same advance is sharpening the case that useful quantum applications may arrive sooner than expected. A recent white paper written by a Google-led research team outlined how a sufficiently large quantum sy…

npj Quantum Information, Published online: 04 April 2026; doi:10.1038/s41534-026-01227-wContractive unitary and classical shadow tomography

Insider Brief Quantum technology is often portrayed as a field staffed by people with doctoral degrees and years of academic experience. That may be how it is now, but experts are increasingly concerned that as quantum moves out of theory and into practice and out of the laboratory and into the real…

Insider Brief PRESS RELEASE — SpinQ Technology, a leading global provider of full-stack quantum computing solutions, today announced the successful completion of its 600 million Chinese Yuan (about $83 million U.S.) Series C+ financing round. This milestone brings the company’s total Series C

Insider Brief A steady stream of announcements that quantum teams are making progress on quantum error correction seems to have stirred the once-skeptical cryptocurrency community. Coinbase CEO and co-founder Brian Armstrong said he will personally lead an industry push to make Bitcoin quantum-resis…

Insider Brief PRESS RELEASE — QuEra Computing today open-sourced its T-gate simulator (Tsim), a GPU-accelerated quantum circuit simulator that, for the first time, lets researchers simulate non-Clifford gate operations at the speed and scale that quantum error correction (QEC) development dema…