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The British Business Bank committed £100 million and tied it to TITAN, a system OQC expected to launch in 2028 with 200 logical qubits. In June 2025, OQC announced error-detection results on three devices, each a single dual-rail qubit.
Microsoft's researchers replaced aluminum with lead in their nanowire devices. The company now aims for a scalable, practical quantum computer by 2029. Henry Legg of the University of St Andrews said the preprint does not resolve the fundamental issues.
André Schrottenloher released circuits and code for the step repeated 28 times in an attack on Bitcoin's signature curve. Craig Gidney, a Google Quantum AI co-author of the March study, wrote that such work should be published openly.
IBM listed five spending areas, from research to acquisitions, without assigning amounts. Commerce had signed a letter of intent for $1 billion in planned CHIPS funding toward Anderon, IBM's planned quantum wafer foundry.
Teams publishing in Science measured quantum learning advantages on quantum data, including an 11.8-order cut in samples. On ordinary datasets, classical models led on four of five in a peer-reviewed benchmark. HSBC and IBM reported gains in a preprint.
CAS Cold Atom Technology disclosed single- and two-qubit gate fidelities of 99.9% and 99% for Hanyuan-2. Chinese newspapers that reported the launch did not say whether atoms in its two arrays can be entangled with each other.
In a preprint, Cisco and UC Santa Barbara researchers reported 4% or less decoherence with slow switching and at least 90% fidelity at 1 MHz. Conversion between photon encodings has not yet been demonstrated.
IonQ said it linked two of its commercial trapped-ion computers at a distance in work funded in part through an Air Force Research Laboratory agreement. The company gave no fidelity, entanglement rate, or distance and cited no paper.
Shenzhen researchers reported logical operations on two logical qubits stored in phosphorus atoms. SQC described a processor with 11 physical qubits. QuTech, RIKEN, Intel, Diraq, and imec published results from quantum dots made in labs and in industrial fabs.
A Shenzhen team encoded two logical qubits in four phosphorus nuclear spins with an error-detecting code. Its logical gates averaged about 86% fidelity, below the more than 95% its physical gates averaged.
