https://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Chemical reactions are often understood as molecules crossing a high-energy saddle point, known as a transition state, before following a downhill pathway toward a product. Conventional quantum chemical calculations typically trace this single pathway to determine how a reaction proceeds. https://phys.org/news/2026-10-reveal-hidden-pathways-chemical-reactions.html Analytical Chemistry Thu, 29 Oct 2026 19:00:01 EDT news712499221 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. https://phys.org/news/2026-10-quantum-vacuum-perturbs-atoms-black.html General Physics Thu, 29 Oct 2026 17:30:05 EDT news712511341 Researchers at EPFL have developed a chip-scale blue laser that combines stable light emission with rapid frequency control, opening possibilities for underwater communication, environmental sensing and quantum technologies. https://phys.org/news/2026-10-blue-laser-underwater-communication.html Optics & Photonics Thu, 29 Oct 2026 14:40:08 EDT news712494481 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. https://phys.org/news/2026-10-theoretical-method-anyons-potential-quantum.html Optics & Photonics Thu, 29 Oct 2026 10:40:01 EDT news712484101 An NMR spectrometer can reveal molecular structure down to the atomic level, but weak signals limit what it can see. Now, Aarhus University researchers have used AI to let the spectrometer learn the best pulse sequence directly from the sample. https://phys.org/news/2026-10-simulations-fall-short-spectrometer.html Condensed Matter Wed, 28 Oct 2026 12:40:08 EDT news712409701 In a new study published in Chemical Science, researchers from the University of Oxford's Department of Chemistry have used machine learning simulations to trace how a common polymer transforms into hard carbon, revealing the atomic-scale processes that give this technologically important material its disordered structure. https://phys.org/news/2026-10-machine-simulations-reveal-plastic-hard.html Polymers Wed, 28 Oct 2026 07:00:08 EDT news712321141 Envision a material whose magnetic properties and electronic topology can be toggled by exposure to light, paving the way for future electronic devices that do not rely on traditional electrical switching, which wastes energy by producing heat. https://phys.org/news/2026-10-scientists-uncover-magnetism-topology-atomically.html Condensed Matter Tue, 27 Oct 2026 17:40:06 EDT news712244365 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. https://phys.org/news/2026-10-quantum-gates-nanoseconds-accuracy.html Optics & Photonics Tue, 27 Oct 2026 14:40:12 EDT news712317781 A team of Yale researchers has figured out what gives a magnetic material its mysterious properties, a discovery that could help boost computing memory and the field of "spintronics." Their work is published in Physical Review Letters. https://phys.org/news/2026-10-tiny-shifts-iron-content-potential.html Condensed Matter Mon, 26 Oct 2026 10:28:02 EDT news712229158 Quantum computers need qubits that can be controlled both quickly and reliably. Yet making semiconductor spin qubits faster often makes them more sensitive to electrical noise, creating a difficult trade-off. https://phys.org/news/2026-10-extra-quantum-dot-stability-qubits.html Condensed Matter Mon, 26 Oct 2026 09:40:06 EDT news712224061 One of the fundamental challenges of quantum computing is obtaining information from a quantum bit, or qubit. Unlike a conventional bit, which can be read repeatedly without altering its content, direct measurement of a quantum system typically causes the state to collapse before it can be determined. In other words, reading the information modifies it. https://phys.org/news/2026-10-supercurrent-enables-quantum-destroying.html Superconductivity Sun, 25 Oct 2026 15:00:20 EDT news711982659 Researchers at AIST have directly observed magnetic flux quanta generated in a superconductor by photon absorption and demonstrated a new principle of photon detection that identifies the number of photons based on the number of these flux quanta. https://phys.org/news/2026-10-magnetic-flux-quanta-photon.html Optics & Photonics Fri, 23 Oct 2026 17:20:02 EDT news711982021 Quantum systems can occupy superpositions, quantum states that combine different possibilities. For instance, a microwave field can be prepared in a superposition of an empty state and a state that contains microwave light. https://phys.org/news/2026-10-quantum-cat-states.html Quantum Physics Fri, 23 Oct 2026 08:40:02 EDT news711719213 New research started with a special material that behaves unusually when it's extremely cold—135 degrees below zero Fahrenheit (minus 93 degrees Celsius), close to the most frigid temperature ever recorded in Antarctica—and showed that the unusual behavior could be extended to well above room temperature—up to about 135 F (57 degrees Celsius), close to the highest heat ever measured in Death Valley, California. https://phys.org/news/2026-10-amino-acid-stabilizes-material-quantum.html Nanophysics Thu, 22 Oct 2026 17:40:13 EDT news711902942 Ever since quantum mechanics first described particles, like electrons, as rippling waves, researchers have wondered if those waves could be trapped in place. Writing today in Science a century later, a team of Columbia University researchers reports waves of electrons becoming trapped for the first time in a metal called Pd₅AlI₂. https://phys.org/news/2026-10-quantum-electron-metal.html Condensed Matter Thu, 22 Oct 2026 14:00:18 EDT news711812644 Quantum networks, systems that connect devices and allow them to exchange information encoded in the quantum states of particles, could enable more secure communications. To build these networks, physicists need to devise strategies that allow distant particles to share quantum states, preserving them long enough to perform calculations or enable communication between devices. https://phys.org/news/2026-10-atomic-memory-distant-ions-entangled.html Optics & Photonics Wed, 21 Oct 2026 07:40:12 EDT news711706392 Transmitting electricity without losing any energy may sound impossible, yet this is precisely the promise of superconductivity. For nearly 40 years, scientists have been working to understand materials that exhibit this remarkable property at relatively high temperatures. Unlocking their secrets could one day help make power grids more efficient, enhance medical technologies and support the development of quantum computing. https://phys.org/news/2026-10-hidden-rivalry-quantum-states-heart.html Superconductivity Tue, 20 Oct 2026 18:00:07 EDT news711721321 Researchers at the U.S. Department of Energy's (DOE) Argonne National Laboratory have completed two of the largest cosmological simulations ever performed. Each simulation modeled the evolution of 13.4 trillion dark matter particles across a region 28.6 billion light-years wide. https://phys.org/news/2026-10-aurora-supercomputer-powers-largest-cosmological.html Astronomy Tue, 20 Oct 2026 16:00:14 EDT news711713693 The Korea Research Institute of Standards and Science (KRISS) has remeasured a key transition frequency of the strontium (Sr) atom for the first time in 88 years, since 1938, using a photonic grating chip. It has established a new absolute frequency value with a measurement uncertainty reduced by more than 50 times. By providing an accurate reference value for next-generation quantum technologies, this achievement is expected to contribute to the precise control and miniaturization of quantum devices, including atomic clocks and neutral-atom quantum computers. The work is published in the journal Metrologia. https://phys.org/news/2026-10-scientists-redetermine-key-strontium-frequency.html Optics & Photonics Mon, 19 Oct 2026 13:20:18 EDT news711615313 Today's computer technology, based on silicon chips, is slowly reaching its physical limits. Components cannot be miniaturized indefinitely, and clock speeds cannot be increased indefinitely. At the same time, huge AI data centers are being built in many places, and these consume an immense amount of electricity. This is why scientists around the world are searching for novel materials that can replace or complement silicon technology and consume significantly less electricity. https://phys.org/news/2026-10-rays-reveal-copper-oxide.html Condensed Matter Mon, 19 Oct 2026 11:40:06 EDT news711621013 Some quantum systems are so complex that even the most powerful supercomputers struggle to simulate their behavior. One solution is quantum simulation: building a controllable quantum system in the lab and tuning it to mimic the one researchers want to understand. https://phys.org/news/2026-10-monolithic-ion-quantum-simulations.html General Physics Sun, 18 Oct 2026 14:00:06 EDT news711191698 Whether we are waiting for a car windshield to defrost in winter or a warm drink to cool down, how long it takes for an object to settle into a stable, even temperature within its environment (thermal equilibrium) depends on numerous factors. These can include surface area, the material properties of an object and airflow. https://phys.org/news/2026-10-physicists-quantum-limit-thermalization.html General Physics Sun, 18 Oct 2026 13:20:01 EDT news711375948 Researchers have developed and demonstrated a new hybrid photonic platform that integrates quantum emitters with photonic devices, providing a way to reliably control the interaction between photons and quantum information carriers. The chip-based platform, which combines gallium phosphide (GaP) with a diamond substrate, could help make quantum networks more practical by providing a way to connect quantum devices over long distances. https://phys.org/news/2026-10-hybrid-diamond-chip-interactions-quantum.html Optics & Photonics Sun, 18 Oct 2026 09:00:05 EDT news711300067 Qubits, the quantum equivalent of digital bits, are fragile and prone to errors. That makes building reliable quantum computers extremely difficult. One fix has been to use traditional magic state distillation, which filters out flaws, but it is extremely resource-intensive. https://phys.org/news/2026-10-quantum-magic-state-cleanup-errors.html Quantum Physics Sat, 17 Oct 2026 14:00:02 EDT news711367172 Quantum computers represent a next step in the fast-paced evolution of technology. Using quantum bits (qubits), they have the potential to run certain calculations exponentially faster than conventional computers. However, developing and fine-tuning quantum computers requires an enormous number of repetitive tests. To accelerate quantum technology development, we need a method that can read quantum states at ultrafast speeds. https://phys.org/news/2026-10-high-frequency-method-boosts-2d.html Quantum Physics Fri, 16 Oct 2026 18:00:01 EDT news711373496 For the first time, scientists have achieved strong coupling between light and long-lived acoustic vibrations in an optical fiber. Optical fibers are used in both classical telecommunications and quantum communication and could serve not only as connections between computing nodes but also as quantum processors themselves in the future. The results, published in Nature Physics, pave the way for new technologies in quantum signal processing. https://phys.org/news/2026-10-highway-racetrack-strong-coupling-optical.html Optics & Photonics Fri, 16 Oct 2026 17:20:01 EDT news711373441 To build faster and more energy-efficient computers, researchers need to understand nanoscale magnetic materials. But looking inside these tiny magnets is surprisingly difficult: Modern microscopes only measure the magnetic field outside the material, not the magnetic pattern inside. Because many different internal patterns can produce the exact same field, working backwards has long been a challenge. https://phys.org/news/2026-10-physics-ai-reconstructs-hidden-patterns.html Condensed Matter Fri, 16 Oct 2026 11:40:12 EDT news711364261 New materials and catalysts have the potential to transform everything from food production and medicine to batteries and stainless steel. Computer simulations help scientists narrow down promising candidates before testing them in a lab, but those simulations can be unreliable, especially for molecules that contain multiple metals. https://phys.org/news/2026-10-electron-density-chemistry-difficult-metal.html Analytical Chemistry Thu, 15 Oct 2026 18:00:10 EDT news711295441 Silicon spin qubits are a promising platform for building scalable quantum computers as they are compatible with the semiconductor manufacturing technologies used to produce today's computer chips. However, they have an important weakness: silicon spin qubits typically lose accuracy when several qubits are under parallel control. To be useful, quantum computers will need to operate many qubits simultaneously without compromising the accuracy of their operations. https://phys.org/news/2026-10-silicon-qubits-surpass-gate-fidelity.html Quantum Physics Thu, 15 Oct 2026 17:20:05 EDT news711293821 When light hits a tiny defect embedded in a solid material like diamond or silicon carbide, it can kick the defect's electrons into an excited state. These spin defects have the potential to be used as stable, readable qubits for quantum technologies, for example, quantum sensing. But modeling the full physics of their energetics over time—a key step in developing spin defects into new technologies—is a challenging task. https://phys.org/news/2026-10-quantum-reveal-defects-energy.html Condensed Matter Thu, 15 Oct 2026 11:40:09 EDT news711280201