Quantum computing and others quantum

Researchers have proposed a breakthrough technique for reading quantum information without destroying the delicate states that make quantum computers work. By detecting an electrical signal generated by the qubit itself, their method achieved up to 99.85% accuracy in simulations and could make future quantum computers simpler and more efficient.

The principle "Work smarter, not harder!" apparently also applies to controlling quantum materials with light. Many of their fascinating properties depend on how the atoms are arranged in the crystal. Ultrashort laser pulses can be used to alter these structures in a targeted way—the light first excites electrons, whose changed energy and dynamics exert forces on the atomic nuclei and can thereby set the atoms in motion. Such processes unfold within femtoseconds, a millionth of a billionth of a second.

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Researchers have observed unusual fractional quantum Hall states in very thin gallium arsenide quantum wells The post New fractional quantum Hall states appeared first on Physics World.

UCD’s Dr Nuala Caffrey discusses her current work in quantum, the problems she aims to solve and how fundamental research can be turned into practical technologies. Read more: The UCD physicist stacking quantum materials like Lego

Ethereum researcher Justin Drake said it is their “hope” that Ethereum will achieve its post-quantum and post-AI transition by December 2028.

Author(s): Makoto Ishihara, Carles Roch i Carceller, Kieran Neil Wilkinson, Casper Ahl Breum, Tobias Gehring, and Jonatan Bohr BraskThe authors present a semi-device-independent protocol for certifying quantum randomness from an uncharacterized measurement device by probing it with a small set of trusted states and lower-bounding the output entropy via semidefinite programming. They experimentally demonstrate the approach using optical homodyne detection of the vacuum probed by coherent states, showing that randomness can be certified in the presence of measurement noise, analog-to-digital converter imperfections, and finite-size effects. [Phys. Rev. A 114, 052413] Published Tue Nov 03, 2026

Author(s): Etienne Daum, Benedikt Berlitz, Steffen Deck, Alexey V. Ustinov, and Jürgen LisenfeldSuperconducting transmon qubits are a cornerstone of solid-state quantum computing, yet their coherence is limited by dielectric loss in planar capacitors and junction electrodes. Here researchers explore to what extent this can be mitigated in mergemon qubits, which employ larger Josephson junctions that contribute most of the required capacitance. Using qubit spectroscopy to detect individual defects on surfaces and within tunnel junctions, the team compares different mergemon qubit designs and finds that careful balancing of junction and electrode geometries allows for long coherence times that are on par with similarly fabricated transmon qubits. [Phys. Rev. Applied 26, 054007] Published Tue Nov 03, 2026

Imagine shuffling a deck of cards where some of the cards are fading just because of the way they interact with the external environment as you shuffle them. Your job is to figure out the interplay between the shuffling, or "imposed randomness," due to the way you shuffle your cards and how that relates to the fading as cards are exposed to the external environment.

Researchers from the Faculty of Physics at the University of Warsaw, the Military University of Technology (Poland), IBM Research Zurich and the French National Centre for Scientific Research (CNRS) have observed a new quantum state of matter known as a supersolid in an exciton-polariton Bose-Einstein condensate. Remarkably, the phenomenon occurs not at temperatures close to absolute zero, but at room temperature. The results have been published in Science Advances.

Researchers at the University of Regensburg and their international partners have found a way to significantly reduce errors in quantum bits. In an experiment, they demonstrated that a single additional measurement before a series of quantum operations can cut the error rate by more than half. The results have been published in Applied Physics Reviews.

Nonlocal correlations draw heat from a bath The post Cool correlations: quantum steering can make cooling more efficient appeared first on Physics World.

Quantum Design's acquisition of Oxford Instruments NanoScience has created a global company with the engineering firepower to create innovative measurement solutions and large-scale cryogenic systems for quantum computing and physics research The post Technology companies join forces to boost scientific discovery and quantum scale-up appeared first on Physics World.

Author(s): Fernando Meneses, Christopher T.-K. Lew, Anand Sivamalai, Andy Sayers, Brant C. Gibson, Andrew D. Greentree, Lloyd C. L. Hollenberg, and David A. SimpsonRemote magnetic tracking is crucial for navigation in GPS-denied environments, but real-world signals are often too weak, noisy, and complex to model reliably. The authors combine quantum diamond magnetometry with a deep-learning algorithm trained solely on experimental data to track an elevator in an urban setting. They show that full-vector magnetic inputs over short time windows yield robust centimeter-scale accuracy across arbitrary sensor frames despite strong noise, with model training requiring less than an hour. This model-free approach provides a practical route to deploying quantum magnetometry for real-time tracking in complex environments. [Phys. Rev. Applied 26, 054003] Published Mon

Author(s): Henry G. Bell, Chenhang Xu, Arthur McCray, Minyong Han, Yicheng Zhuang, Harold Y. Hwang, Colin Ophus, and Alfred ZongThe authors have developed Bend Contour Electron Tomography (BCET), a computational framework that turns conventional electron microscope images into quantitative maps of morphology and strain tensors in ultrathin materials, which are essential for understanding and designing their mechanical, magnetic, and optical properties. Rather than scanning a sample point-by-point, BCET analyzes full-field images by decoding bend contours created as electrons scatter through a deformed crystal. Combining images acquired at different viewing angles then allows the reconstruction of both the membrane shape and its local strain. BCET offers an accessible route to efficiently mapping nanoscale deformation and, ultimately, tracking how ultrathin

The Swan Bitcoin founder warned that hackers are using large language models to exploit security flaws with just a few prompts.

Researchers at IBM Research published “Meter-scale quantum interconnects between large quantum processors.” Abstract Excerpt: “Modular quantum architecture requires long-distance quantum interconnects to stitch together individual processor modules. Such interconnects, long-distance couplers or L-couplers, must support coherent quantum operation over meter-scale distances and scale to multiple connections between any two modules. Here we demonstrate four L-couplers... » read more The post Quantum Interconnects Link Two 120-Qubit Processors (IBM Research) appeared first on Semiconductor Engineering.

Developing reliable machine learning models for healthcare can be challenging when only small datasets are available. This challenge motivates research into whether quantum computing approaches can learn useful patterns from limited symptom and risk-factor data.

One approach to making information storage in quantum computing less prone to errors is known as topological quantum computing. It relies on special quantum states that are expected to be more resistant to local disturbances.

Developing reliable machine learning models for health care can be challenging when only small datasets are available. This challenge motivates research into whether quantum computing approaches can learn useful patterns from limited symptom and risk-factor data.

Quantum computers rely on qubits as their units of information. To connect them into a larger network across long distances, they need to transmit quantum information using light.

How atoms are arranged inside materials can influence the behavior of electrons and the resulting electronic states. Kagome lattices, repeating arrangements of atoms forming triangles that share corners (with hexagonal spaces between them), have been linked with the emergence of unusual electronic states.

© seekingalpha.com. Use of this feed is limited to personal, non-commercial use and is governed by Seeking Alpha's Terms of Use (https://about.seekingalpha.com/terms). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.

© seekingalpha.com. Use of this feed is limited to personal, non-commercial use and is governed by Seeking Alpha's Terms of Use (https://about.seekingalpha.com/terms). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.

As quantum computers grow more ambitious, many researchers believe the best way forward is to build them in multiple interconnected parts. In these modular designs, separate quantum processors are linked so they can work together as one larger machine. For this to happen, however, connections must carry fragile quantum information without destroying it.

Next Technology Holding cited exchange security and quantum computing risks in authorizing sales or loans against its 5,833 BTC. It says none of the coins are held at Binance.

A Qubit Built by Chemists Most light-linked qubits come from defects that physicists find inside crystals such as

Author(s): Clay Córdova, Diego García-Sepúlveda, and Nicholas HolfesterExact results in mass-gapped two-dimensional QCD show that spontaneously broken noninvertible symmetry often places particles and solitons in one multiplet, forcing equal masses. [Phys. Rev. Lett. 137, 181603] Published Fri Oct 30, 2026

Author(s): Akash V. Dixit, Zachary L. Parrott, Dennis Chunikhin, Trevyn F. Q. Larson, Bradley D. Hauer, and John D. TeufelA new device uses millimeter-wave radiation to accurately read the states of superconducting qubits without altering them. [Phys. Rev. Lett. 137, 180803] Published Fri Oct 30, 2026

Author(s): Robert Ott, Torsten V. Zache, Soonwon Choi, Adam M. Kaufman, and Hannes PichlerIntegrating quantum error correction into a sensing protocol improves detection of rare events in noisy environment. [Phys. Rev. Lett. 137, 180802] Published Fri Oct 30, 2026

Author(s): Sophia ChenA new device uses millimeter-wave radiation to accurately read the states of superconducting qubits without altering them. [Physics 19, s140] Published Fri Oct 30, 2026

Bitcoin faces mounting quantum security concerns as Ripple secures a US banking charter, USDC gains ground in Europe and VanEck adds BTC to a new ETF.

Quantum networks could one day connect quantum computers into more powerful systems and enable new forms of secure communication. But a fundamental obstacle stands in the way: Quantum information is extraordinarily fragile, and the entanglement between particles of light on which such networks would depend is easily disrupted.

If you are looking for an opportunity in quantum or deep-tech then consider a new job at one of these 14 exciting companies. Read more: 14 Ireland-based companies recruiting in quantum and deep-tech

How do AI models work? This primer explains crucial concepts to understand how LLMs work, with definitions and explanations for all of AI's new nomenclature.

Graphene, a material consisting of a sheet of carbon atoms arranged in a honeycomb pattern, has proved promising for various technological applications. Materials in which several layers of graphene are stacked together can exhibit different advantageous properties.

Albert Einstein called quantum entanglement ‘spooky action at a distance,’ and the nickname has stuck for nearly 80

Most conventional methods of ultrafast photography utilize evenly spaced intervals in which images are taken, but new developments

A new review argues that India's water scarcity is intensified by deteriorating water quality and hidden virtual water flows, not just physical supply shortages.

North Korea's Lazarus is wrapping malware delivery in ML-KEM-1024, the NSA's pick for national security systems, but it won't hide the malware itself.

A controlled benchmark study finds that 4-bit quantization of a compact Transformer model delivers the strongest overall efficiency gains, while knowledge distillation and a Mamba state-space architecture each excel in narrower niches.

Researchers at the German Cancer Research Center have developed a hyperpolarized xenon sensor that detects gadolinium from MRI contrast agents down to the micromolar range.

A comprehensive review of more than 200 peer-reviewed publications examines how communication protocols, security frameworks, AI, blockchain and quantum technologies could shape the future of the Internet of Medical Things.

The word "vacuum" may conjure the image of empty space. Maybe you think of a region far outside the solar system without planets, debris, gas clouds or light. According to quantum theory, however, a vacuum is never truly empty. Quantum mechanics extends the Heisenberg uncertainty principle—which states that we cannot measure the position and the velocity of an object exactly at the same time—to a vacuum. The result is that a vacuum can never be still.

A new three-step quantitative framework combining AHP-TOPSIS, Shapley value, and evolutionary game models matched three Chinese regions with distinct land shareholding models.

Scientists have identified three unusual quantum materials that could transform the search for dark matter. Quantum simulations suggest that a material called titanium diselenide could make future detectors up to 1,000 times more sensitive to certain forms of light dark matter than current benchmark materials. The finding could help researchers search for particles whose interactions [...]

Alice & Bob's new model reduces the hardware required for a potential attack, bringing it closer to reality and increasing pressure to adopt quantum-resistant security sooner.

Researchers have introduced two generic hybrid key encapsulation mechanisms that combine standardized classical public-key encryption schemes with post-quantum KEMs, proving their security in the standard model.

A theoretical framework derives lower bounds on how much repair long-running AI conversations must push back to users when handoffs lose governing constraints.

A proposed superadiabatic shortcut scheme uses Rydberg superatoms to implement a controlled pi phase gate with high simulated fidelities and robustness against decoherence.

Brazilian researchers show that FT-NIR spectroscopy combined with PLS regression and logistic regression can detect and quantify water and cow milk adulteration in goat milk with low prediction errors and 94.7 percent classification accuracy.

Marge Ryan of Johnson Matthey is our podcast guest The post From catalysts to quantum materials: exploring the future of platinum group metals appeared first on Physics World.

Theoretical physicists at Emory University have discovered a way to use light to detect the "spectral fingerprints" of anyons—exotic quasiparticles that emerge from the collective behavior of many electrons. Their findings are published in Physical Review Letters. The work offers a new tool for the study of anyons, which hold potential as fundamental building blocks for quantum computing.

PwC’s Leonard McAuliffe explores the changing quantum landscape and how organisations need to evolve in tandem. Read more: Quantum, moving out of the research lab and into the boardroom

Researchers extended the LDM quantum Cournot duopoly framework to two-product competition, finding that high entanglement or fast output adjustment triggers bifurcation and chaos.

NVision, a quantum technology company, has published a paper in Nature detailing an individually addressable organic molecular spin-photon interface, which the company identified as a key development on the road to connecting stationary qubits with photons. NVision also revealed a strategic partnership with thin-film lithium niobate (TFLN) photonics leader HyperLight Corporation for the integration of its thin-film molecular qubits directly onto advanced PICs. According to NVision, its recent milestones open a path toward millions of qubits on chips compatible with standard foundry manufacturing, and establish a practical path to quantum computing at scale as a result, using photonic connectivity to link quantum resources within and...

A phase-adaptive deep learning pipeline automatically quantified five liver indices from gadoxetic acid-enhanced MRI without inter-phase co-registration, matching manual measurements and distinguishing cirrhotic from non-cirrhotic patients.

A diagnostic accuracy study of 400 urine specimens found that a semi-quantitative albumin-to-creatinine ratio strip agreed substantially with laboratory measurements for albumin but poorly for creatinine, making creatinine estimation the main analytical limitation for UACR classification.

UCC's Prof Séamus Davis is set to receive the prestigious Michael Faraday Medal and Prize. Read more: 10 Ireland-based quantum experts you should know about

A UT Dallas-led NSF-funded project is developing quantum-ready, AI-enabled security tools for next-generation cellular networks.

Researchers have introduced Bioloc3D, an open-source ImageJ and Python toolset that automates three-dimensional quantification of fluorescent elements and their colocalizations across entire microscopy stacks.

A simulation-only study proposes a quantum-enhanced swarm robotics framework that pairs NV-center magnetometers with Bayesian sensor fusion to detect landmines.

Author(s): Alex A. Chapple, Boris M. Varbanov, Alexander McDonald, and Alexandre BlaisFluxonium qubits are promising candidates for fault-tolerant quantum processors, but their dispersive readout remains challenging due to measurement-induced state transitions (MIST) that populate higher-excited states. To address this, the authors systematically explore MIST across a broad range of fluxonium parameters using branch analysis. They find that lighter fluxoniums are less susceptible to these transitions than heavier counterparts, and trace this to three key mechanisms. These results provide a path toward optimizing fluxonium design for fast, high-fidelity readout. [Phys. Rev. Applied 26, 044084] Published Wed Oct 28, 2026

Author(s): Stuart Yi-Thomas and Jay D. SauA quantum point contact between fractional quantum Hall states with different fillings can act as a dissipationless voltage transformer and provide a physical realization of the boundary sine-Gordon model. However, the microscopic understanding across the full range of transmission has remained unclear, complicating the interpretation of a recent experiment. Here, the authors use analytical and tensor network calculations of a sliding charge density wave to solve this open problem and quantitatively connect the conductance to the boundary sine-Gordon model. [Phys. Rev. B 114, L231406] Published Wed Oct 28, 2026

Author(s): João Augusto Sobral, Pietro M. Bonetti, Subrata Mandal, and Mathias S. ScheurerWhile altermagnets have been primarily studied for their magnetic properties, another important aspect is the impact of strong quantum fluctuations that can lead to the loss of magnetic order. Here, the authors construct exactly solvable models for quantum-disordered altermagnets. They identify altermagnetic spin liquids—states that preserve spin-rotation and translation symmetries, yet break time-reversal symmetry through orbital moments, whose net value vanishes by symmetry— and study their excitations, and competing phases. [Phys. Rev. B 114, 235132] Published Wed Oct 28, 2026

Author(s): Xiang Li, Zheng-Yang Mei, Yang He, Si-Lu Zhao, Yan-Jun Liu, Xiao-Hui Song, Kai Xu, Zhong-Cheng Xiang, Dong-Ning Zheng, and Heng FanDeterministic remote entanglement of superconducting qutrits via time-bin microwave photons surpasses the negativity bound of two-qubit states. [Phys. Rev. Lett. 137, 180801] Published Wed Oct 28, 2026

A new simulation framework couples Density Functional Theory calculations with a temperature-dependent circuit model and a modified Kalman filter, cutting LFP battery state-of-charge estimation errors by up to 56.4 percent under dynamic loads.

A phantom-based study reports that quantitative planar imaging of silver-111 is feasible when optimized triple-energy window scatter correction is combined with multi-photopeak acquisition.

A hybrid classical-quantum support vector machine trained on more than 14,000 maternal records from Uganda and Pakistan predicted mental health risk competitively with the best classical models while SHAP explanations identified clinically meaningful predictors.

A new perspective argues that systematic data collection on public service modifications is essential to quantify their intended and unintended health consequences.

Using a new slow-motion electron camera, physicists from Regensburg, Marburg and Jülich revealed how intense electric fields drive electrons in graphene, causing them to jump across energy gaps in a seemingly paradoxical manner. This was made possible by a novel combination of laser technology and electron microscopy.

A bio-dissociable platinum quantum dot cluster nanozyme reduced endometriotic lesions and remodeled the inflammatory microenvironment in a mouse model, offering a preclinical, nonhormonal therapeutic strategy.

iPronics, a developer of silicon photonics-based optical circuit switching for AI infrastructure, appointed co-founder and CTO Daniel Pérez-López CEO. Pérez-López launched iPronics after working on quantum photonics at Xanadu Quantum Technologies. Additionally, the company named Geoffrey Tate chairman of the board. Tate has spent 10 years at AMD running several business units, most recently as senior vice president of processors. The leadership transition follows iPronics’ recent $125 million Series B funding round, which includes strategic participation from NVIDIA. Sparrow leadership team (From left to right): Anne Marie Engtoft Meldgaard, chief commercial officer; Kurt Stokbro, executive advisor;...

New research shows that trapping spinons can create, rather than destroy, protected quantum behaviour at a material’s edges The post Trapping quasiparticles creates quantum behaviour appeared first on Physics World.

The ESA’s Sinda Mejri discusses her love for physics, the ESA’s Quantum Technology Cross-Cutting Initiative and how space may be the final frontier for quantum innovation. Read more: The ESA expert moving quantum out of the lab and into orbit

A new review finds that CT-derived extracellular volume fraction correlates with fibrosis, tumor biology, prognosis, and treatment response across abdominal organs, though standardized protocols are still lacking.

A theoretical proposal shows that the Barnett effect in a rotating magnetic sphere can switch optical-microwave quantum entanglement on and off by reversing a magnetic field.

Scientists have proposed a surprisingly simple way to improve photon absorption using specially engineered waveguides, potentially making future quantum technologies far more efficient. Quantum technologies depend on a process that remains surprisingly unreliable: transferring a single photon between two quantum bits, or qubits. With conventional methods, the receiving qubit successfully absorbs the photon only about [...]

By modeling diamond defects as molecules, scientists can predict their behavior faster and identify promising building blocks for quantum computers and sensors. Most materials being considered for quantum technology can hold a stable quantum state only when chilled to extreme temperatures. Diamond-based materials can work at room temperature, but their usefulness depends on defects in [...]

Nuclear magnetic resonance measurements reveal three distinct superconducting phases in K₂Cr₃As₃, establishing the compound as a tunable bulk platform for topological superconductivity and potential Majorana excitations.

Speaking on Cointelegraph’s Chain Reaction podcast, Muneeb Ali warned that uncertainty over Bitcoin’s quantum security could deter institutional investors.

A pilot study in Flanders, Belgium, successfully quantified and monetized the health benefits of green-blue areas, estimating annual economic gains of 3 billion Euros.

Researchers from Jülich, Aachen and Cologne have performed a quantum operation on a qubit in just 6.8 nanoseconds—with more than 99.98% accuracy. Such operations typically take several tens of nanoseconds in superconducting quantum computers. The paper was published in Nature Communications.

Another bombshell result shows how artificial intelligence is fueling fierce competition at the frontiers of math and physics

Adelaide University quantum engineers have found a new way to improve some of the world's most sensitive sensors of electromagnetic fields, a breakthrough that could help advance brain imaging, medical diagnostics, communications technology and next-generation quantum devices.

A systematic review finds published qubit estimates for breaking RSA-2048 fell from about one billion to as low as 11,000, yet argues the reductions compress a resource threshold rather than a timeline.

Intel has agreed to buy Classiq, an Israeli startup that makes software for programming quantum computers. The chipmaker announced the deal on Monday without giving a price, but it is worth about $2.3bn, Bloomberg reported, citing people familiar with the matter. Intel declined to comment on the figure. Quantum computers use qubits, which can handle certain problems, such […] This story continues at The Next Web

Machine learning models optimized for edge hardware can determine control-pulse parameters for SNAP gates in microwave cavity qudits with gate trace infidelity near 10^-3.

Quantum networks, systems that connect devices using quantum mechanical effects, could potentially allow users to share information more securely and efficiently. Building these networks typically entails linking stationary qubits, units of quantum information encoded in trapped ions or other physical systems, using photons (particles of light) transmitted through optical fibers.

Adelaide University engineers have shown that strategically placed bare loops without Josephson junctions can give superconducting quantum interference sensors absolute magnetic field readings while preserving maximum sensitivity.

The ATLAS collaboration found strong evidence that Z bosons produced in Higgs boson decays are quantum-entangled, extending the phenomenon’s observation to one of the highest-energy particle-physics settings yet tested.

A CMS analysis found no quantum black holes or sphalerons in 2016–2018 LHC data while setting model-dependent limits and introducing a phase-space distance method for particle searches.