GoKawiil
Tech News
Researchers at the RIKEN Center for Emergent Matter Science, working with collaborators, demonstrated high-accuracy control of five silicon spin qubits operated at the same time over a shared microwave control line. The team identified a key source of errors that arises when qubits are driven simultaneously and developed a method to suppress it, publishing the results in Nature Physics.
Quantum computers rely on qubits, which unlike binary bits can hold many values at once and can be linked so that information about one affects the others. Because qubits are extremely sensitive to outside disturbances that can corrupt calculations, quantum systems are cooled to temperatures colder than deep space to keep them stable enough to run algorithms accurately.
Quantinuum announced that its latest generation of quantum hardware can scale logical qubits far past the 'breakeven' point, where adding more physical qubits to a logical qubit actually improves performance rather than degrading it. The company said each increase in logical qubit size boosted certain performance measures by more than a factor of ten.
Anthropic reports that its Claude model, given plain-language specs for eight quantum circuits spanning chemistry, optimization, physics simulation and number theory plus an automated scoring evaluator, independently produced designs that outperform the best previously published circuits, in some cases by more than tenfold. The work was led by Andi Gu through Anthropic's STEM Fellows Program, with mentorship from quantum physicist Alek Kemeny and collaborators from Harvard University and QuEra Computing.
Researchers at the University of Oxford used a quantum system combining qubits with quantum oscillators to recreate the Aharonov-Bohm effect, in which a charged particle's quantum phase shifts due to magnetic flux it never physically passes through. In their simulation, this invisible influence caused a modeled particle's motion to halt entirely. The results were published in Nature Physics.
Physicists at Chalmers University of Technology in Sweden devised a theoretical method that performs a wide range of advanced quantum operations more than a thousand times faster than current techniques. The approach targets the core problem that qubits are extremely fragile and prone to errors from noise, radiation, and heat during lengthy operations. The findings were published in Physical Review Letters.
IBM and University of Chicago researchers used a new error-correction technique to encode 70 logical qubits and complete a random circuit sampling task in roughly 15 minutes, a computation that would take leading classical supercomputers an impractical amount of time. The team also designed a more structured circuit approach to verify that the quantum output was actually correct, addressing a longstanding challenge in confirming quantum results once problems exceed classical checking ability. The circuits and data have been published via the Quantum Advantage Tracker.
Quantinuum has introduced Helios, a 98-qubit trapped-ion quantum computer that uses a four-way junction to shuttle ions between memory and processing zones, alongside new control software called Helios runtime that schedules ion movement and laser operations. It surpasses the company's earlier machines, which had 32 qubits in 2023 and 56 qubits in 2025, making it the largest trapped-ion system built so far.
Quantinuum has unveiled Helios, a trapped-ion quantum computer using 98 qubits, the largest such system built to date. The machine relies on a new four-way X junction hardware design paired with Helios runtime software, allowing it to move and process data across multiple paths simultaneously rather than in a single line, as earlier machines required.