October 3, 2026

Alice & Bob and ENS Lyon Demonstrate DC-Biased SQUID Architecture for Multi-Photon Cat Qubit DissipationTier 2

Alice & Bob and ENS Lyon have demonstrated a DC-biased SQUID architecture for stabilizing cat qubits, replacing traditional microwave pumps with a microvolt-scale DC voltage. This method eliminates unwanted Kerr nonlinearities and provides a scalable control mechanism for superconducting bosonic codes. The experimental setup showed selective activation of 1-to-1, 2-t...

Previously: 2026-10-01

Fermilab SQMS Center Identifies Microscopic Origins of Qubit Performance Variance Across Superconducting TransmonsTier 2

Researchers at Fermilab's SQMS Center and collaborators identified microscopic material defects causing performance variations in superconducting qubits. Their study found that nanoscale fabrication geometries, surface oxides, and energy relaxation times are directly correlated. Specifically, single-nanometer shifts in surface oxide thickness, substrate trench depths belo...

Beyond Light Cones: State Preparation Complexity in Quantum Spin GlassesTier 3

We introduce a method for studying state preparation complexity in dense quantum p-spin Hamiltonians on n qubits, going beyond bounds based only on circuit lightcones. The key input is the class's effective profile complexity, which is derived from the metric entropy of its Pauli profiles. These profiles record expectations of all Pauli operators supported on exactly p...

A No-Go Theorem for Order-Two Clifford Electric-Magnetic DualityTier 3

Electromagnetic duality in the toric code has order two at the level of anyon types and acts as a Hadamard-type logical transformation on the encoded quantum information. Here, we ask whether it can likewise be realized microscopically as an order-two Clifford operation. For the Z_2 toric code, we prove that any locality-preserving Clifford realization of electric...

Complexity and Applications of Nearest Stabilizer Product State ProblemsTier 3

Consider the following optimization problem over stabilizer product states: given an n-qubit stabilizer state |ψ⟩ and a set of single-qubit stabilizer states S, maximize |⟨ψ| φ_1, …, φ_n ⟩|^2 over single-qubit stabilizer states |φ_i⟩∈S. By varying the set S, we show that solutions to this problem...

Geometry of Knill-Laflamme Coefficients for Pauli Error DetectionTier 3

Knill-Laflamme coefficients characterize exact quantum error detection through scalar compressions of error operators to the code space. For prescribed Pauli observables and a fixed code dimension, attainable coefficient vectors form a joint higher-rank numerical range, whose Euclidean norm image is the signature spectrum. We study how operator representation, code dimension...

Universality Sacrifices Reliability in Classical-Quantum Channel CodingTier 3

Universal channel coding enables communication without a complete description of the channel. For classical channels, universal codes can attain both capacity and the optimal high-rate reliability. We show that this compatibility fails for classical-quantum channels in general; that is, the optimal reliability in the channel-aware scenario is not always achievable with unive...

Classiq Launches Fault Tolerance Engine for Hardware-Aware Quantum Application SynthesisTier 2

Classiq has launched its Fault Tolerance Engine, a new tool integrated into the Classiq SDK. This engine translates high-level quantum circuits into detailed, hardware-aware execution plans for fault-tolerant quantum processors, specifically using a 3D surface-code lattice. It automates routing and scheduling for quantum error correction, aiming to optimize qubit overhead...

US Department of Energy Releases National Quantum Roadmap Establishing 2028 Fault-Tolerance MilestonesTier 2

The U.S. Department of Energy (DOE) has released its National Quantum Roadmap, aiming for error-corrected quantum computing by 2028. This strategy shifts focus from qubit counts to demonstrated scientific utility, with a three-phphased framework to integrate quantum processing units into existing high-performance computing and AI infrastructure. The roadmap also emphasize...

D-Wave Launches Gate-Model Simulator Beta Program Featuring 21-Qubit Dual-Rail Erasure EmulationTier 2

D-Wave has launched a beta program for its gate-model quantum computing simulator, accessible via its Leap quantum cloud service. The simulator supports up to 21 qubits with both ideal and hardware emulation modes and models D-Wave's dual-rail superconducting cavity qubit architecture, which uses hardware-level error detection. The program aims to evaluate mid-circuit err...

Previously: 2026-10-02

NATO Releases Official Quantum Technology Roadmap Establishing Operational Timelines and Standardization FrameworksTier 2

NATO has released its Quantum Technology Roadmap, effective July 2026, to implement its 2023 Quantum Technology Strategy. The roadmap outlines Lines of Effort in quantum computing, sensing, and communications, with target milestones to accelerate technology adoption and maintain defense interoperability among its 32 member nations. Key initiatives include quantum sensing...

SQC and Schneider Electric Advance Quantum-Enhanced Energy ForecastingTier 2

Insider Brief PRESS RELEASE — Silicon Quantum Computing (SQC) and Schneider Electric, a global energy technology leader, have progressed to Stage 2 of the Australian Government’s Critical Technologies Challenge Program (CTCP), receiving A$3.6 million (US$2.5m) in funding to continue their work in partnership with UNSW Sydney. Energy grids are under increasing pre...

Unitary Foundation Launches Its 2026 Quantum Open Source Software SurveyTier 2

The Unitary Foundation has launched its 2026 Quantum Open Source Software (QOSS) survey, an annual initiative designed to collect information on the quantum open-source software community. The survey includes questions on demographics, research, tools, and platforms, with the goal of providing an informative and representative snapshot of the community and field. T...

Quantum in Business Conference Highlights Commercial Quantum ApplicationsTier 2

Insider Brief PRESS RELEASE — More than 450 business leaders, technology innovators, researchers and public officials gathered in Chattanooga today for the Quantum in Business conference presented by EPB QuantumSM. The event highlighted Tennessee and Chattanooga’s growing role in advancing quantum innovation while showcasing real-world applications already delive...

ORNL Develops LuGo Algorithm on Frontier Supercomputer, Reducing Quantum Circuit Gate Counts by 95% for Computational Fluid DynamicsTier 2

Scientists at Oak Ridge National Laboratory (ORNL) developed LuGo, an algorithm that significantly reduces the number of quantum gate operations needed for computational fluid dynamics (CFD) by over 95%. This was achieved by using classical supercomputers like Frontier for heavy initialization routines before quantum processing, cutting down 2,000,000 logic gates to 91,00...

Patenting Quantum Computing Innovations – Part 4: Entanglement SwappingTier 2

In part four of our five part series on quantum patents, Sinan Utku discusses the arguments both for and against the patent eligibility as an invention of entanglement swapping.

How a Large IT Consulting Company Works with QuantumTier 2

To find out how a large IT consulting company is approaching quantum, GQI interviewed two executives at CGI to hear their views on how to leverage quantum for their clients. This article provides an interesting perspective on how they are leveraging quantum tech as well as some of the challenges.

QEst Hack Invites Participants to Test Quantum Algorithms on Real Business ProblemsTier 2

Insider Brief PRESS RELEASE — Metrosert, Estonia’s Applied Research Centre and National Metrology Institute, invites Estonian companies as well as students, researchers and other interested participants from the Nordic and Baltic countries to apply for the QEst Hack 2026 quantum hackathon, taking place in Tallinn from 11 to 13 November. Five companies will be selected...

New Method Generates Photons That Are Virtually IndistinguishableTier 2

Insider Brief PRESS RELEASE — Working in close collaboration, researchers from Paderborn University, the University of Basel and Ruhr University Bochum have made a significant breakthrough in the field of quantum communication. In their recently published paper in the prestigious journal Physical Review Letters, they demonstrate how special semiconductor nanostructures...

Quantum Computing Could Cut Industrial Emissions Without an AI-Sized Footprint, BCG FindsTier 2

Insider Brief The rise of artificial intelligence has raised a new question about whether the next major computing technology will add another large load to power grids. Some experts are worried that quantum systems might do the same as they scale. A Boston Consulting Group study suggests that is unlikely. BCG estimates that quantum-enabled technologies […]

The Conversation: 100 Years Ago, Schrödinger’s Equation Shed Light on Quantum Physics – Scientists Use it Today to Fine‑Tune Chemical ReactionsTier 2

By Sophya Garashchuk, Professor of Chemistry and Biochemistry, University of South Carolina For The Conversation The objects you interact with every day are predictable – you can pick up a box, sit down in a chair without falling to the floor, or open a door without your hand passing through the knob. But if you […]