Software Reweighting Cuts Simulated Surface-Code Errors 1,600-Fold
Google Quantum AI reports that Virtual Error Cancellation reduced residual logical errors by more than 1,600-fold in distance-7 surface-code simulations. The offline method reuses recorded stabilizer measurements, but has not yet been demonstrated on a quantum processor.
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A Photonic Chip Transfers Skyrmion Topology Between Quantum States
An integrated silicon nitride photonic chip transferred a skyrmion pattern from a single-photon state into correlations between two photons. The reported topological number remained measurable under noise even after concurrence fell to zero-a result about state structure, not proof of a functioning quantum network.
Meta's New AI Models Face a Test Without Public Scores
Meta says Muse Wonder can retain useful context and work through extended coding and business tasks. But its launch announcement provides no benchmark scores, sample sizes or error rates with which to independently assess those claims.
Mohenjo-daro Shows Urban Growth Did Not Deepen Inequality
A study of 309 homes at Mohenjo-daro finds that residential inequality fell as the Indus city developed, suggesting that shared infrastructure and collective urban management may have limited wealth gaps
