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Quantum archive

Every Quantum story, newest first. 87 in this archive.

Quantum this week

  1. Aug 29, 2026

    QuEra Reports AI Built Laser Recovery Hits 99 Percent in Blind Trials

    QuEra reports a Claude built laser controller recovered locks in 695 of 700 trials in seconds, addressing a key onsite specialist bottleneck for neutral atom quantum computers. Production runs use inspectable software without an agent in the loop.

  2. Aug 28, 2026

    LLM Agents Can Iteratively Design Variational Quantum Circuits Under Constraints

    University of Osaka researchers built a seven stage LLM agent that iterates variational quantum circuits and reported competitive results on QML and chemistry benchmarks.

  3. Aug 28, 2026

    New Theory Explains Why Moderate Quantum Noise Can Improve Learning Generalization

    A statistical learning framework on arXiv links microscopic decoherence to a finite noise optimum where test error can fall before rising again at strong noise.

  4. Aug 25, 2026

    IBM and UChicago Report Verified Quantum Advantage on 70 Logical Qubits

    IBM and University of Chicago researchers say a logical circuit with 70 encoded qubits completed a sampling task in about fifteen minutes while providing a statistical fidelity bound classical simulators could not match at practical runtimes.

  5. Aug 24, 2026

    Google Runs First Verifiable Quantum Advantage on Willow Hardware

    Google Quantum AI reports the first verifiable quantum advantage run on Willow, using the Quantum Echoes algorithm with error corrected superconducting qubits.

  6. Aug 24, 2026

    IBM Links Modular Cryogenic Cells on the Road to Starling

    IBM linked two modular cryogenic cells below 15 millikelvin at its Poughkeepsie facility, a scaling milestone toward the fault tolerant Starling quantum computer targeted for 2029.

  7. Aug 17, 2026

    IonQ Hits qLDPC Breakeven on Trapped Ions With 9x Better Logical Error Rates

    IonQ demonstrated breakeven qLDPC error correction on 40 trapped ions, with logical error rates up to 9 times lower than prior superconducting demonstrations.

  8. Aug 16, 2026

    IBM Posts Three Trusted Quantum Advantage Experiments on Heron Hardware

    IBM and partners posted three verified quantum advantage experiments on Heron hardware in July 2026, emphasizing trust frameworks alongside classical intractability.

  9. Aug 15, 2026

    98 Qubits, One Transform: Mitsui and Mitsubishi Electric Push QFT Benchmarks on Quantinuum Helios

    Mitsui and Mitsubishi Electric benchmark approximate and logical Quantum Fourier Transforms on Quantinuum Helios at 98 physical and 12 logical qubits — one of the largest QFT demonstrations published.

  10. Aug 14, 2026

    IBM Nighthawk Lands at Yonsei: First External Deployment Targets a 48-Year Classical Problem

    Yonsei University will install IBM Nighthawk in November 2026 — the first external deployment — to hybrid-compute Leigh syndrome mechanisms that Fugaku alone would need 48 years to process.

  11. Aug 13, 2026

    Helios Lands in OCI: Quantinuum and Oracle Bet on Hybrid Quantum-AI Cloud

    Quantinuum and Oracle will deploy the 98-qubit Helios trapped-ion system inside OCI, offering enterprise customers hybrid quantum-AI workloads under unified cloud governance.

  12. Aug 12, 2026

    Breaking the 100-Qubit QFT Barrier: Q-CTRL’s Heron Demo and What It Proves About Pre-FTQC Scale

    Q-CTRL reports a 100-qubit Quantum Fourier Transform on IBM’s Heron r3 processor—twice the prior experimental register width—with convolutional compilation and active error suppression.

  13. Aug 11, 2026

    Weight-Four Parity Checks Arrive on a Shuttling Silicon Spin Qubit Array

    A Nature study demonstrates weight-four X- and Z-type parity checks and five-qubit GHZ entanglement on a silicon spin processor that uses coherent shuttling for connectivity — a step toward surface-code experiments on semiconductors.

  14. Aug 10, 2026

    Doped Clifford Sampling Pairs Hardness Guarantees With an On-Chip Fidelity Certificate

    IBM and UChicago report doped Clifford sampling with a 95%-confidence fidelity lower bound of 0.284 — a structured push toward verifiable quantum advantage.

  15. Aug 8, 2026

    Fab-Like Qubits: IBM Adds HRL's Silicon Spin Architecture to Its Quantum Stack

    IBM's July 23 HRL acquisition adds silicon spin qubits to its quantum portfolio—exchange-only qubits fabbed like classical chips, operating at 1 K, with HRL's 18-qubit CMOS demo as the proof point.

  16. Aug 8, 2026

    When Classical Simulators Disagree: Algorithmiq's Trusted 56-Qubit Matter Experiment

    Algorithmiq's 56-qubit IBM experiment on quantum matter spreading is one of three August advantage papers IBM says include validation when classical simulators disagree.

  17. Aug 8, 2026

    Errors You Can See: D-Wave's Dual-Rail Gate Keeps Photon Losses Flagged at Entanglement Time

    D-Wave's Nature paper demonstrates a 500-ns, 99.9%-fidelity two-qubit gate on dual-rail erasure qubits that preserves hardware-level error detection — a foundational step toward lower-overhead fault tolerance.

  18. Aug 7, 2026

    Logical Beats Physical: Microsoft and Quantinuum Publish 800× Error Suppression in Nature

    Microsoft and Quantinuum report 11× to 800× logical error-rate improvements in Nature, with peer-reviewed trapped-ion QEC data and a new open-source deq package.

  19. Aug 6, 2026

    Classical Methods Disagree, Quantum Estimators Converge: Qedma's Floquet Dynamics Advantage Claim

    When two classical supercomputer methods disagree on Floquet magnetization, Qedma's 74-qubit IBM experiment turns cross-platform error mitigation into the most credible estimate available.

  20. Aug 5, 2026

    Doped Clifford Sampling: IBM and UChicago Encode Verification Into the Quantum Advantage Claim

    IBM and the University of Chicago report doped Clifford sampling with built-in fidelity certification, part of a trio of August quantum advantage demonstrations emphasizing verifiable trust.