IBM Tests Built-In Checks in a 70-Logical-Qubit Sampling Experiment
The reported experiment embeds error checks in a sampling circuit and uses postselection to improve measured output quality.
Short, source-linked quantum computing news on hardware, research, applications, post-quantum security, business and policy.
Latest published first; source dates used where needed.
The reported experiment embeds error checks in a sampling circuit and uses postselection to improve measured output quality.
HAWK's designers confirmed withdrawal on July 29, a day after Anthropic reported an AI-assisted attack on the scheme.
A Nature study combines a 4-kelvin controller, ribbon-cable interconnect and millikelvin silicon quantum-dot processor.
A reinforcement-learning experiment improves stability under injected drift and fine-tunes an already calibrated processor.
A 54-qubit experiment creates a topologically ordered state and uses its anyonic excitations to demonstrate a universal gate toolkit.
RFC 9980 adds composite encryption and signatures, plus standalone hash-based signatures, to the OpenPGP protocol.
High-value and high-impact federal systems receive 2030 key-establishment and 2031 digital-signature migration deadlines.
Executive Order 14413 directs agencies to develop specifications and explore pathways toward demanding quantum-computing applications.
The GPU supercomputer is operating in Kobe, with tightly coupled quantum-HPC integration identified as a scientific goal.
The research combines quantum-generated candidate portfolios with classical repair and compares results against classical methods.
The trapped-ion processor combines all-to-all connectivity with an average two-qubit gate infidelity of 7.9 × 10^-4 across operating zones.
A Nature study reports 11-fold to 800-fold improvements against selected physical circuit baselines using correction, detection and postselection.
The issuer says it sold 28 million shares at $60 each, before underwriting discounts, commissions and offering expenses.
A neutral-atom preprint tracks logical information through repeated measurement, lost-atom replacement and reservoir reloading.
An indium-arsenide and lead device shows long parity-switching times in a materials experiment supporting Microsoft's Majorana 2 announcement.
An eight-qubit experiment reports mean decoding below one microsecond per round, with complete feedback measured separately.
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A little perspective on a fast-moving field.