Short, source-linked quantum computing news on hardware, research, applications, post-quantum security, business and policy.
Latest published first; source dates used where needed.
Peer-reviewed measurements link a semiconductor hole spin to 1.55-micrometre photons, but this remains an interface experiment—not a network node.
Physical qubits are the hardware. Logical qubits are error-protected systems built from them—and the conversion is never a universal ratio.
A simulated trapped-ion architecture kept decoding delay below 12% across three compiled workloads, but no fault-tolerant quantum computer ran the experiment.
A new Japanese roadmap spells out the light sources, detectors and control hardware that must improve before photonic systems can scale.
Chemicals, batteries and pharmaceuticals are among the clearest candidates for early gains. Their breakthroughs could reach you through everyday products.
A new Delft unit will combine European components into complete superconducting quantum computers and develop a repeatable integration process.
Superconducting rails help detectors reach 0.1 millimetres in width while reducing false signals—a useful step toward larger optical sensors.
A superconducting design divides storage and interaction between two coupled modes, with faster gates predicted in simulations.
A planned Danish foundry would give quantum-hardware teams another place to manufacture their chips.
The funding opportunity asks teams to show how an entire application benefits, with a defined end user and credible classical comparisons.
Princeton-led MARQUIS will bring materials science and semiconductor processing to the Josephson junction, a core superconducting-qubit component.
The newly inaugurated quantum computer is operational, with qualification, broader access and supercomputer integration still progressing.
A new reset mechanism lifts IBM’s reported maximum circuit throughput above 100,000 per second, with gains that still depend on the workload.
Federal funding supports a C$893 million project to expand research and establish advanced quantum manufacturing in Canada.
A dedicated testbed recovered in 695 of 700 timed trials, according to QuEra's account of its Claude-assisted control pilot.
Box-shaped cryostats offer shorter interconnect paths and more wiring room for future multi-processor quantum systems.
A research workflow trains a transformer to propose molecular state-preparation circuits, with selected circuits tested on Helios hardware.
The companies report a 65.3% reduction in peak location-registration signals and a 7.0% reduction in paging signals.
A common library of ten optimization problem classes gives quantum and classical approaches comparable tasks and public results.
A photonic integrated circuit produced four rubidium-atom traps, with an approximately 27.5-second lifetime reported by the company.
RFC 10024 specifies three combinations of ML-KEM and elliptic-curve key agreement at Proposed Standard maturity.
A Nature experiment reports an approximately 500-nanosecond entangling gate that largely preserves detectable photon-loss errors.
Their research combines classical preprocessing and problem decomposition with quantum workflows to reduce the burden placed on hardware.
The companies report closing a transaction that brings US semiconductor fabrication and packaging capacity into IonQ's organization.
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A little perspective on a fast-moving field.
