October 18, 2026

RIKEN Demonstrates High-Fidelity Simultaneous Control of Silicon Spin Qubits Above 99.9% ThresholdTier 2

Researchers at RIKEN and collaborators have achieved high-fidelity simultaneous control of five silicon spin qubits, maintaining over 99.9% accuracy. They overcame crosstalk caused by AC-Stark shifts through a new calibration protocol, enabling the use of a single microwave control line. This breakthrough meets the fault-tolerant threshold for quantum error correction and...

Harvard, Anthropic, and QuEra Use LLMs to Discover Quantum Circuits with Up to 9,100x Lower Resource CostsTier 2

Researchers from Harvard, Anthropic, and QuEra Computing developed an AI framework that uses Large Language Models (LLMs) to discover and optimize fault-tolerant quantum circuits. This framework significantly reduces the resource costs of core computational primitives, achieving up to 9,100x lower costs compared to hand-crafted baselines. The LLMs achieved this by proposi...

Previously: 2026-08-28

D-Wave Demonstrates 3D Analog-Digital Quantum Simulation of Higher-Order Topological Insulators Using 728 QubitsTier 2

D-Wave has successfully demonstrated 3D analog-digital quantum simulation of higher-order topological insulators using up to 728 qubits on an Advantage2 superconducting quantum annealing processor. This achievement, detailed in a research study on arXiv, involved new analog-digital quantum control protocols to measure localized boundary modes and extract 3D bulk topologic...

Chalmers Next Labs, ConScience, and NQFF Validate Superconducting Qubit Chip Stability Across International TestbedsTier 2

A joint study by Chalmers Next Labs AB, ConScience AB, and Singapore’s National Quantum Federated Foundry (NQFF) validated the stability of a superconducting quantum processor (QiB1) when transported between international research facilities. The study, conducted under the WACQT–NQFF Twin Testbed initiative, confirmed that environmental changes between Gothenburg and Sing...

Anderon Releases First Superconducting Quantum PDKTier 2

Insider Brief Anderon has released its first Superconducting Quantum Process Design Kit (PDK), the company said in a blog post. According to Anderon, the kit is meant to give quantum device and circuit developers a more efficient, standardized way to work. The company said it supplies designers with the basic building blocks for manufacturable designs […]

Magic in quantum trajectory unravelings of noisy random quantum circuitsTier 3

The quantum-trajectory description of a noisy quantum circuit is not unique: every Kraus representation of the noise channel defines a different unraveling, i.e., a different ensemble of pure states that averages to the same density matrix. While all unravelings share the same expectation values of observables, they generally differ in the amount of quantum resources carried...

Magna: simulating magic state factories as cheaply as Clifford circuitsTier 3

Classical simulation of magic state factories, including distillation, cultivation, and code switching, is challenging because of their substantial non-Clifford content. We introduce textttmagna (magic-state-factory assessment via global network algebra), a classical simulator that simulates such protocols as cheaply as Clifford circuits. textttmagna expresses the...

Selected Stabilizer Subspaces for Compact Many-Body Wave FunctionsTier 3

Selected configuration interaction (SCI) obtains accurate many-body solutions by variationally diagonalising the Hamiltonian in a sparse, iteratively selected set of configurations, but can lose compactness when the target state has broad configurational support. We introduce selected stabilizer interaction (SSI), a fully classical, SCI-inspired method that instead iterative...

Podcast with Johannes Pollanen, Co-founder of EeroQ and a Professor of Physics at Michigan State UniversityTier 2

Johannes Pollanen, co-founder of EeroQ and a professor of physics at Michigan State University, explains how EeroQ builds qubits from single electrons floating on a film of superfluid helium, and why he thinks the semiconductor chip is the only proven way to scale a quantum computer.

Review Evaluates AI and Quantum Computing Paradigms for Adaptive Combinatorial OptimizationTier 2

A new review paper by Hoong Chuin Lau examines the intersection of AI and quantum computing for combinatorial optimization, categorizing research into three paradigms: AI-for-Quantum Optimization (AI-for-QO), Quantum-for-AI (Q-for-AI), and AI-Quantum Co-Optimization. The study, which analyzed 119 papers, concludes that AI-assisted quantum optimization shows promise, while...