Latest Quantum Research & Methods News
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Aug- 2025 -15 AugustIndustry
Jiuzhang 4.0: 3,050 Photons, 25.6 Microseconds, and a Direct Answer to the Algorithm That Threatened Photonic Quantum Advantage
15 Aug 2025 - A research team led by Pan Jianwei and Lu Chao-Yang at the University of Science and Technology of China (USTC), in collaboration with Tsinghua University and Jiuzhang Quantum Technology Co. Ltd., has demonstrated the largest photonic quantum advantage experiment ever conducted. Their new processor, Jiuzhang 4.0, injected 1,024 high-efficiency squeezed states of light into a programmable…
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12 AugustResearch
Alice & Bob’s New “Unfolded” Code Dramatically Lowers Magic State Overhead
A new research paper from quantum startup Alice & Bob in collaboration with Inria unveils a technique to significantly reduce the cost of magic state generation - a crucial resource for universal fault-tolerant quantum computing. The paper, titled “Unfolded distillation: very low-cost magic state preparation for biased-noise qubits”, describes an error-correction scheme dubbed the “unfolded code” that leverages the unique…
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Jul- 2025 -12 JulyResearch
Microsoft’s Majorana‑1 Chip Demonstrates X and Z Loop Parity Measurements
Microsoft’s Azure Quantum team has released a new scientific paper (Distinct Lifetimes for X and Z Loop Measurements in a Majorana Tetron Device) presenting the first experimental evidence of complementary Pauli-X and Pauli-Z parity measurements on a topological qubit. The results, announced by Microsoft Quantum Technical Fellow Chetan Nayak in a LinkedIn update, showcase the ability to “harness a topoconductor…
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Jun- 2025 -29 JuneResearch
Quantinuum’s Breakthrough Sets Course for Fault-Tolerant Quantum Computing by 2029
Quantinuum announced a significant technical breakthrough: the company claims to have overcome the “last major hurdle” on the path to scalable, universal fault-tolerant quantum computers. In a press release accompanying two new research papers, Quantinuum declared itself the first to demonstrate a fully error-corrected universal gate set—meaning it can perform all types of quantum operations (Clifford and non-Clifford) with errors…
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21 JuneResearch
Microsoft Unveils New 4D Quantum Error-Correcting Codes
Microsoft Quantum's researchers have introduced a new family of four-dimensional (4D) geometric quantum error-correcting codes that promise to dramatically outperform today’s standard 2D surface codes. Revealed in a new preprint "A Topologically Fault-Tolerant Quantum Computer with Four Dimensional Geometric Codes" (arXiv:2506.15130v1) and an accompanying Microsoft blog post, these novel 4D LDPC codes (low-density parity-check codes) achieve 1,000-fold lower error rates…
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15 JuneQuantum Security & PQC
“Tour de Gross” Bets That High‑Rate QLDPC Modules Can Beat the Surface Code on Qubit Economics – If Inter‑Module Measurements and Links Can Catch Up.
The June 2025 preprint “Tour de gross” proposes the bicycle architecture: a modular, long‑range‑connected fault‑tolerant quantum computing stack built around bivariate bicycle (BB) quantum LDPC codes and an explicit set of fault‑tolerant logical “bicycle instructions” (logical measurements, automorphisms, and T‑state injection). The paper’s central claim is architectural: for a fixed number of physical qubits and a fixed physical error rate,…
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13 JuneResearch
Oxford Achieves 10⁻⁷-Level Qubit Gate Error, Shattering Quantum Fidelity Records
Physicists at the University of Oxford have set a new world record for quantum logic accuracy, achieving single-qubit gate error rates below 10^-7 – meaning fidelities exceeding 99.99999%. The breakthrough, reported in a study published in Physical Review Letters in June 2025 marks the lowest error ever recorded for any quantum computing platform. “As far as we are aware, this…
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May- 2025 -28 MayResearch
Quantum Breakthrough Slashes Qubit Needs for RSA-2048 Factoring
A new research preprint by Google Quantum AI scientist Craig Gidney has dramatically lowered the estimated resources needed to break RSA-2048 encryption using a quantum computer. Gidney’s May 2025 paper, “How to factor 2048 bit RSA integers with less than a million noisy qubits,” argues that a fault-tolerant quantum computer with under 1 million qubits could factor a 2048-bit RSA…
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Mar- 2025 -20 MarchResearch
New Study Shows Post‑Quantum Cryptography (PQC) Doesn’t Have to Sacrifice Performance
The new performance analysis of Kyber and Dilithium is a welcome addition to the PQC literature. It confirms that post‑quantum security and good performance are not mutually exclusive, especially when using optimized implementations. In fact, Kyber and Dilithium often outperform classical cryptography at comparable security levels. This challenges the narrative that PQC will drastically slow down our networks. At the…
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13 MarchIndustry
D-Wave Claims Quantum Supremacy with Quantum Annealing
D-Wave Quantum Inc. has announced a breakthrough, claiming to achieve quantum computational advantage – even “quantum supremacy” – using its quantum annealing technology on a practical problem. In a peer-reviewed study published in Science on March 12, 2025, D-Wave’s researchers report that their 5,000+ qubit Advantage2 prototype quantum annealer outperformed one of the world’s most powerful supercomputers (Oak Ridge National…
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6 MarchResearch
Fault-Tolerant Quantum Computing (FTQC) with Erasure Qubits
Fault-tolerant quantum architectures based on erasure qubits represent an exciting development in quantum engineering. They blend clever hardware design with advanced error-correcting codes to tackle the Achilles’ heel of quantum computers: noise. The research by Gu, Retzker, and Kubica shows that by making qubits a bit smarter about their own errors, we can significantly lower the overhead on the road…
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4 MarchIndustry
Zuchongzhi 3.0 Quantum Chip: Technical Analysis and Implications
China’s quantum computing powerhouse, the Zuchongzhi research teams, just unveiled Zuchongzhi 3.0, a new superconducting quantum processor with 105 qubits, marking a major leap in quantum computing performance. Announced in March 2025 by a University of Science and Technology of China (USTC) team led by Pan Jianwei, Zhu Xiaobo, and Peng Chengzhi, this prototype boasts unprecedented processing speed – reportedly…
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Feb- 2025 -28 FebruaryIndustry
AWS Announces Ocelot Chip for Ultra-Reliable Qubits
Amazon Web Services (AWS) has officially unveiled Ocelot, its first in-house quantum computing chip, marking a significant milestone in the company’s quantum ambitions. Announced on February 27, 2025, Ocelot is a prototype processor designed from the ground up to tackle quantum error correction in a more resource-efficient way. AWS claims the new chip can reduce the overhead (and thus cost)…
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28 FebruaryResearch
PsiQuantum Demonstrates Foundry-Manufactured Photonic Quantum Computing Platform With Record Fidelities
PsiQuantum publishes the first complete photonic quantum computing platform fabricated in a commercial semiconductor foundry, with record fidelities across every building block.
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24 FebruaryResearch
Silicon Runs Its First Real Algorithm: Grover’s Search on Four Qubits With Every Gate Above Threshold
24 Feb 2025 - There is a difference between proving you can throw a ball and proving you can play a game. For three years, silicon spin qubits have been proving they can throw: individual gate operations above the fault-tolerance threshold, entanglement between pairs and triplets of qubits, the steady accumulation of quality metrics that justify the platform's ambitions. But…
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