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Entropy engineering opens new avenue for robust quantum anomalous Hall effect in 2D magnets

A research team from the University of Wollongong’s (UOW) Institute for Superconducting and Electronic Materials (ISEM) has addressed a 40-year-old quantum puzzle, unlocking a new pathway to creating next-generation electronic devices that operate without losing energy or wasting electricity.

Published in Advanced Materials, the study is the work of UOW researchers led by Distinguished Professor Xiaolin Wang and Dr. M Nadeem, with Ph.D. candidate Syeda Amina Shabbir and Dr. Frank Fei Yun.

It introduces a new design concept to realize the elusive and highly sought-after quantum anomalous Hall (QAH) effect.

Mathematical approach makes uncertainty in AI quantifiable

How reliable is artificial intelligence, really? An interdisciplinary research team at TU Wien has developed a method that allows for the exact calculation of how reliably a neural network operates within a defined input domain. In other words: It is now possible to mathematically guarantee that certain types of errors will not occur—a crucial step forward for the safe use of AI in sensitive applications.

From smartphones to self-driving cars, AI systems have become an everyday part of our lives. But in applications where safety is critical, one central question arises: Can we guarantee that an AI system won’t make serious mistakes—even when its input varies slightly?

A team from TU Wien—Dr. Andrey Kofnov, Dr. Daniel Kapla, Prof. Efstathia Bura and Prof. Ezio Bartocci—bringing together experts from mathematics, statistics and computer science, has now found a way to analyze neural networks, the brains of AI systems, in such a way that the possible range of outputs can be exactly determined for a given input range—and specific errors can be ruled out with certainty.

Enhanced quantum computers and beyond: Exploring magnons with superconducting qubits

Devices taking advantage of the collective quantum behavior of spin excitations in magnetic materials—known as magnons—have the potential to improve quantum computing devices. However, using magnons in quantum devices requires an in-depth understanding of their nature and limitations. A new experimental technique uses superconducting qubits to sensitively characterize magnon behavior in previously unexplored regimes.

Researchers in the Grainger College of Engineering at the University of Illinois Urbana-Champaign have reported in the journal Physical Review Applied that highly excited magnon behavior in can be accurately characterized by coupling the material to a superconducting qubit via a microwave cavity. This setup allowed the researchers to characterize both the number of magnons and their lifetimes when thousands of excitations are present, a regime that has not been studied well.

“To be useful in quantum computing applications, limitations on magnon systems need to be understood properly,” said Sonia Rani, the study’s lead author. “The problem is that there isn’t a good theory for when certain effects become important, and if we should expect them to lead to detrimental effects.

Q&A: Companies are racing to develop the first useful quantum computer—ultracold neutral atoms could be the key

The race to build the first useful quantum computer is on and may revolutionize the world with brand new capabilities, from medicine to freight logistics.

Tech companies all want to take the crown, with Microsoft announcing the first of its kind quantum chip in February, only days before Google’s breakthrough on .

As the race heats up, companies are turning to a new ultracold solution—neutral atoms—which Swinburne University of Technology has been exploring and making discoveries in for two decades.

Major Graphene Breakthrough: Magnet-Free Spin Currents Could Supercharge Quantum Computing

Scientists at TU Delft have unlocked a key quantum effect in graphene without using any magnetic fields, paving the way for ultra-thin quantum circuits. By layering graphene on a special magnetic crystal, they created stable spin currents that travel along the edges of the material. These current

Breaking the Rules of Magnetism: Unusual Crystal Surprises Physicists With Cooling Effect

The research team has identified atacamite as a material with magnetocaloric properties. Natural crystals have long captivated us with their vivid colors, flawless geometry, and striking symmetry. But for scientists, these beautiful formations offer more than just visual delight. Hidden within thei

A Fiery Mineral Found in an Icy Asteroid Baffles Scientists

A tiny grain from asteroid Ryugu has revealed djerfisherite, a mineral that normally forms in scorching, oxygen-poor settings—conditions Ryugu was never thought to experience.

The surprise find hints that the asteroid either endured unexpected heat spikes or captured exotic material transported across the early Solar System. Microscopy and chemical clues now challenge the idea that Ryugu is compositionally uniform and point to a far more chaotic mixing of planetary building blocks. Scientists are turning to isotopic “fingerprints” to trace the grain’s true origin and decode how primitive asteroids really formed.

Hayabusa2 brings ryugu samples & surprising mineral clues.