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Time Crystals Could Transform the Future of Quantum Clocks Time crystals could form the backbone of extraordinarily precise quantum clocks , according to a new mathematical study published in Physical Review Letters, the research, led by Ludmila Viotti at the Abdus Salam International Centre for Theoretical Physics , suggests these unusual systems may outperform conventional clock designs that depend on external stimulation to maintain steady oscillations. What Makes Time Crystals Unique? In physics, a crystal is defined as any system exhibiting a repeating microscopic pattern. Traditional crystals repeat their structure across space. Time crystals , however, display a pattern that repeats in time rather than space. First demonstrated experimentally in 2016, these exotic phases of matter have since become the focus of intense investigation as scientists explore their practical potential. Related science coverage: Latest quantum and physics breakthrough Environmental and scientific r...

US Scientists Achieve First Dissipationless Fractional Chern Insulator, Opening New Era for Quantum Devices A team of researchers in the United States has revealed a device capable of carrying electrical current along its fractionally charged edges without wasting energy as heat. Reported in Nature Physics , the breakthrough — led by Xiaodong Xu at the University of Washington — represents the first experimental realization of a dissipationless fractional Chern insulator , a long-theorized state of matter with major potential for next-generation quantum technologies . Understanding the Quantum Hall Effect The quantum Hall effect arises when electrons are confined within a two-dimensional material , cooled to near absolute zero and subjected to intense magnetic fields . As in the classical Hall effect, a voltage forms at right angles to the flow of current — but in this quantum version, the voltage increases in precise, quantized steps . Fractional Quantum Hall Effect and Collectiv...

Quantum Chaos Simulation on 91-Qubit Processor Using Error Mitigation Breakthrough Large-Scale Quantum Chaos Finally Within Reach of Near-Term Quantum Computers The study of quantum chaos aims to translate chaotic classical dynamics into quantum terms, but practical simulations have been held back by limited computing power. Using advanced error mitigation and custom-designed circuits on a 91-qubit superconducting quantum processor , researchers have demonstrated a promising new approach. The work is reported in Nature Physics . Error Mitigation Instead of Error Correction Reliable quantum simulations demand the suppression of errors, yet full-scale quantum error correction comes at the cost of significant qubit and control overheads . Until now, researchers have largely sidestepped this challenge by focusing on smaller quantum many-body systems or on integrable models that exhibit limited chaos. In the new study, the team adopted a different strategy. Rather than eliminating noi...

Artificial Intelligence Solves Decades-Old Puzzle in Quantum Field Theory Simulations A long-standing problem in particle physics has finally been resolved: how best to formulate quantum field theories on a lattice so they can be efficiently simulated on computers. The breakthrough, scientists say, has come from artificial intelligence (AI) . Why Quantum Field Theories Are So Hard to Simulate Quantum field theories underpin modern physics , explaining how particles behave and interact. Yet many of the field's most challenging questions cannot be solved with traditional mathematics alone and instead vast and highly complex computer simulations . The difficulty lies in the fact that quantum field theories can be implemented on computers in many different ways. While these approaches should, in theory, produce the same physical results, their practical performance varies dramatically. Related science and physics reporting Searching for the Optimal Lattice Formulation Some lattice f...

New Unified Quantum Theory Bridges Long-Standing Divide in Particle Behaviour A Unified Theory for Quantum Impurities A newly proposed unified theory has brought together two cornerstone perspectives of modern quantum physics. It reconciles opposing ideas about how a rare and exotic particle behaves within a complex many-body environment   —  whether it moves freely or remains fixed as an impurity inside a vast sea of fermions, known as a Fermi sea . Developed by scientists at the Institute for Theoretical Physics at Heidelberg University , the framework explains how quasiparticles arise and links two previously separate quantum states . According to the researchers, this breakthrough could significantly influence the direction of ongoing and future quantum matter experiments . Related science coverage: Latest breakthroughs in theoretical physics Contrasting Models of Impurity Behaviour in Quantum Systems The Widely Accepted Quasiparticle Model Quantum many-body physics has ...

X-ray Four-Wave Mixing Reveals How Electron Move Together Inside Atoms and Molecules Directly Observing Electron Coherence for the First Time Scientists working at the SwissFEL X-ray free-electron laser have achieved a long-standing experimental ambition in physics: directly revealing how electrons move in step with one another. Using a technique known as X-ray four-wave mixing , the team has opened a new window into the way energy and information travel through atoms and molecules. Published in Nature , the research could one day shed light on how quantum information is stored and lost, helping to guide the development of more robust and error-resistant quantum technologies . More cutting-edge physics discoveries Why Electron Interactions Matter Much of the behaviour of matter arises not from individual electrons acting alone, but from their complex mutual interactions . Across chemistry and advanced materials, these interactions determine how molecules rearrange, how substances ...

Physicists Discover 'Impossible' Topological State in Quantum Material TU Wien Findings Challenge Long-Standing views of Particle-Based Physics Scientists at TU Wien have uncovered an unexpected state in a quantum material — one that was long thought to be impossible — prompting calls for a broader definition of topological states . The breakthrough has been reported in Nature Physics . Latest quantum physics and materials science news Why Classical Particle Theory Still Shapes Modern Physics Although quantum theory tells us that particles behave like waves, making their exact position uncertain, physicists often rely on classical intuition . In many cases, it remains remarkably effective to picture particles as tiny objects moving through space at a defined speed. This classical picture underpins how researchers describe electrical current in metals , where electrons are imagined to race through the material, accelerating or bending under the influence of electromagnetic ...