Quantum Computing

'It is not a quantum hardware milestone,' the researchers admit. So why did it get reported as one?

Every outlet called the new University of Saskatchewan quantum computer open architecture. The qubit chip is locked to Rigetti. That distinction matters.

Infleqtion and Safran call their quantum timing bundle commercially available worldwide. Their only proof of performance is a single 21.8km demonstration on a purpose-built Chicago fiber link that does not exist elsewhere.

SpinQ shipped China first superconducting quantum chip to a Middle East research institution in Nov 2023, then delivered a complete system a year later. Nobody else in China has made that claim publicly.

Superconducting qubit relaxation rates switch up to 10 times per second, researchers found — 10,000x faster than expected. The culprit: the field was measuring qubits once per second when the action happens in milliseconds. A new paper from NTNU and the Niels Bohr Institute, using a commercial FP...

DGIST researchers say they have confirmed a 70-year-old quantum prediction in a solid for the first time. The paper is careful. The press release is not.

13,000 researchers signed up for Postquant Labs quantum blockchain testnet. The security claim the paper rests on is not settled science.

The previous record was three steps. Going to 15 on a nonlinear Navier-Stokes problem is real progress, and the bar being low is part of the story.

Simulating the hardest part of fault-tolerant quantum computing has been slow and expensive. QuEra just released a free tool that claims to do it five orders of magnitude faster than existing open-source options, and the code is on GitHub.

An Australian company just tested a piece of an optical atomic clock in orbit. The full clock is coming later in 2026 — and if it works, it would be a first.

A room-sized laser system just became a chip. The 99.6% fidelity number is what matters for quantum operations — and the sub-Hz linewidth is what makes it worth taking seriously.