Latest Quantum Research & Methods News
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Jun- 2026 -3 JuneIndustry
OQC Raises £260M in Europe’s Largest Private Quantum Round — Where the Money Actually Goes
Europe's largest private quantum round lands at £260M, with 38% from the British Business Bank. The money is earmarked for OQC's TITAN system, but the gap between 32 qubits today and 200 logical qubits by 2028 demands closer examination.
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3 JuneIndustry
Microsoft’s Majorana 2 Chip Achieves 20-Second Parity Lifetime — But the Topological Qubit Debate Rages On
Microsoft's second topological quantum chip achieves a 1,000-fold improvement in parity lifetime by swapping aluminum for lead. The engineering progress is real. Whether these are topological qubits at all remains fiercely contested.
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2 JuneQuantum Security & PQC
Google’s Secret Quantum Circuits for Breaking ECC Reproduced and Improved in Two Months
A French researcher independently matched Google's secret quantum circuits for breaking elliptic curve cryptography, then improved the gate count. Google's Craig Gidney says the zero-knowledge approach failed and open publication should resume.
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1 JuneIndustry
D-Wave Bets Its Future on Gate-Model Quantum Computing with 2032 Fault-Tolerance Roadmap
D-Wave's first Investor Day roadmap targets 100 fault-tolerant logical qubits by 2032 using dual-rail superconducting qubits. The annealing pioneer enters a crowded gate-model race with an unproven architecture and ambitious error-reduction targets.
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May- 2026 -29 MayQuantum Security & PQC
ETH Zurich’s “Perfect Randomness”: What Actually Happened
A new preprint series claims to break every major lattice-based NIST PQC standard via an improved CDPR attack. The claim has critical technical gaps that the lattice cryptography community will need to resolve.
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25 MayQuantum Security & PQC
A New Paper Claims to Break ML-KEM, Falcon, Hawk, and NTRU. Should You Worry?
A new preprint series claims to break every major lattice-based NIST PQC standard via an improved CDPR attack. The claim has critical technical gaps that the lattice cryptography community will need to resolve.
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23 MayResearch
IBM’s Concatenated Gross Code Reaches the Teraquop Regime
IBM's QEC team packages 11 logical qubits into a single high-dimensional qudit and wraps the gross code in quantum Reed-Solomon algebra. The result: a fault-tolerant memory that reaches the teraquop regime the gross code couldn't previously access.
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16 MayResearch
Jiuzhang 4.0: China’s 1,024-Input Photonic Processor Claims 10⁵⁴ Speedup
Pan Jian-Wei's team published a rigorous Nature paper showing an order-of-magnitude leap in photonic quantum scale. The engineering is impressive. The "quantum supremacy" framing from state media is a different matter entirely.
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13 MayResearch
Theorists Prove Passive Quantum Memory Works in Three Dimensions, Settling a 25-Year-Old Question
A Caltech–UCSD team has constructed a 3D quantum system that can store a qubit for exponential time without active error correction. The result settles a question that has resisted the field's best efforts for a quarter century.
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6 MayIndustry
Q-CTRL Achieves Practical Quantum Advantage — and the Business Signal May Be Bigger Than the Physics
Q-CTRL's 120-qubit simulation of the Fermi-Hubbard model achieves quantitative accuracy matching classical benchmarks while completing in minutes rather than days. The "practical quantum advantage" claim deserves scrutiny, but the underlying technical achievement is real.
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2 MayResearch
IBM’s Quantum Advantage Claim: What the Heron-Fugaku Experiment Actually Shows
IBM says quantum advantage arrives in 2026. A new Heron-Fugaku experiment provides the evidence. Whether it proves the claim depends on how you define “advantage.”
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Apr- 2026 -23 AprilResearch
IonQ Publishes Complete Fault-Tolerant Blueprint for Trapped Ions “The Walking Cat Architecture”
IonQ's 110-page preprint details a complete fault-tolerant quantum computer architecture built entirely on qLDPC codes. The numbers are impressive, but every claim rests on hardware that doesn't yet exist at scale.
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23 AprilQuantum Security & PQC
Chinese Researchers Cut ECC Qubit Requirements to 1,333 with Open-Source Circuits
A Tsinghua–Peking University team achieves 1,333 logical qubits for ECC-256 with fully explicit, open-source quantum circuits. The gate count may matter more than the qubit count.
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21 AprilResearch
Nature Reviews Publishes the Definitive CMOS–Spin Qubit Compatibility Assessment
A comprehensive review from Dzurak's team maps exactly where silicon spin qubits align with existing CMOS manufacturing — and where they diverge. The implications for scaling to millions of qubits are more nuanced than the headlines suggest.
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20 AprilResearch
QuEra Achieves 2:1 Physical-to-Logical Qubit Ratio With Ultra-High-Rate qLDPC Codes
A QuEra–Harvard–MIT collaboration demonstrates qLDPC codes that encode more logical qubits than they consume in overhead — a 2:1 physical-to-logical ratio that enters the Teraquop regime. This is a simulation result, not an experiment. But if it holds up, it rewrites the economics of fault-tolerant quantum computing.
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