https://phys.org/physics-news/quantum-physics/ en-us The latest news on quantum physics, wave particle duality, quantum theory, quantum mechanics, quantum entanglement, quantum teleportation, and quantum computing. Classical computers can temporarily store the information required to perform specific tasks in a short-term memory component known as RAM (random access memory). This component allows computer processors to retrieve information from a chosen location without searching through all stored data. https://phys.org/news/2026-09-random-access-quantum-memory-processor.html Quantum Physics Fri, 25 Sep 2026 08:00:01 EDT news709464005 A simplified cosmological model suggests that decoherence can suppress quantum tunneling, effectively locking fields into the vacuum state they have reached. https://phys.org/news/2026-09-cosmic-lockdown-environment-isolate-quantum.html General Physics Fri, 25 Sep 2026 00:00:01 EDT news709483741 Strike a bell, and it rings with a pitch and a fading that tell you about the bell: its size, its shape, the metal it is made of. Black holes ring too. When two merge, the newborn black hole shivers and sheds gravitational waves in a brief, dying chord, and since 2015, gravitational-wave detectors have been listening. The notes of that chord, which physicists call quasinormal modes, depend only on the black hole's mass and spin and on the law of gravity itself. Change the law, and the chord changes. https://phys.org/news/2026-09-higher-dimensional-black-holes-exact.html General Physics Thu, 24 Sep 2026 17:20:04 EDT news709463984 Quantum materials do things ordinary materials cannot. They carry current without any loss, or conduct only along their outer edge while the inside insulates. Future quantum computers and quantum sensors will run on materials like these. To improve them, researchers need to see exactly where currents and magnetic fields run at the nanoscale. https://phys.org/news/2026-09-vertical-quantum-sensor-reveal-nanoscale.html Superconductivity Thu, 24 Sep 2026 15:20:06 EDT news709464484 Twistronics has become a new alchemy of materials. By choosing atomically thin layers, stacking them and changing their relative angle, researchers can create electronic behavior absent from the original ingredients. Twisted graphene and transition metal dichalcogenides have already yielded superconductivity and fractional Chern insulators, states with fractionally charged excitations. One of physics' most active frontiers now has a moonshot ambition: to design entirely new forms of quantum matter. https://phys.org/news/2026-09-quantum-possibilities-atomically-thin-materials.html Condensed Matter Thu, 24 Sep 2026 14:00:06 EDT news709397881 Scientists have shown that the two exponents (inelastic scattering exponent and dephasing exponent) commonly used to describe electron scattering in graphene do not necessarily follow the same behavior. Using gated epitaxial graphene, a multi-institutional team of researchers independently extracted the two exponents through current-heating measurements and weak-localization analysis. The contrasting gate-voltage dependence provides evidence that energy relaxation and loss of quantum phase coherence can be governed by different microscopic processes. https://phys.org/news/2026-09-graphene-reveal-energy-loss-quantum.html Quantum Physics Wed, 23 Sep 2026 17:20:04 EDT news709372713 Take a second and turn it into trillions of moments. Measure each one. That's how precisely an atomic clock at Singapore's Centre for Quantum Technologies (CQT) keeps time—and with record-setting accuracy, according to results published in Nature on Sept. 23. https://phys.org/news/2026-09-scientists-world-accurate-atomic-clock.html General Physics Wed, 23 Sep 2026 16:20:03 EDT news709393861 A research team led by faculty at the Duke Quantum Center (DQC) has observed string-breaking dynamics related to particle-antiparticle formation on a quantum simulator, among the first such observations in quantum physics. https://phys.org/news/2026-09-quantum-device-simulates.html General Physics Wed, 23 Sep 2026 09:40:01 EDT news709372313 A team led by University at Buffalo physicists has found a mathematical solution that shows how a frustrated quantum magnet can transition from ultraslow behavior to ultrafast, highly entangled behavior resembling that of a black hole. https://phys.org/news/2026-09-physicists-math-ultraslow-quantum-magnetism.html Condensed Matter Tue, 22 Sep 2026 18:00:03 EDT news709314001 Just as a leaf drifts along with a stream, objects in other moving fluids normally drift along with the flow. That is, unless they exert energy to move against it. Although it may be less intuitive, light waves or photons work similarly. To move against a stream of light, an object or particle, like a photon, must either have an external force acting on it or actively use energy to move upstream. https://phys.org/news/2026-09-upstream-quantum-fluid-violating-newton.html Optics & Photonics Tue, 22 Sep 2026 16:10:02 EDT news709310548 Reliably verifying the location of a device connected to the internet or other networks is important for various real-world applications. For instance, it could be valuable for authorizing financial transactions, securing communications and controlling who can access specific databases or services. https://phys.org/news/2026-09-quantum-protocol-device-position-stations.html Quantum Physics Tue, 22 Sep 2026 09:40:03 EDT news709287636 Researchers in China have extended the lifetime of entanglement in a room-temperature, solid-state system by up to a factor of 240. Led by Shuo Ren and Rui-Jian Liang at the University of Science and Technology of China in Hefei, the team transferred entangled states from the electron spins of solid-state defects to the spins of surrounding atomic nuclei, which are far more resilient to noise. The research has been published in Physical Review Letters. https://phys.org/news/2026-09-nuclear-swap-room-temperature-entanglement.html Quantum Physics Mon, 21 Sep 2026 12:40:08 EDT news709210398 Quantum key distribution allows two users to establish secret keys whose security is grounded in the laws of quantum mechanics. Extending this capability to multiple users is an essential step toward quantum networks that support secure communication among many participants. Quantum cryptographic conferencing addresses this need by enabling multiple users to share the same secure key, which they can then use to protect group communications. https://phys.org/news/2026-09-quantum-communication-protocol-enables-users.html Quantum Physics Mon, 21 Sep 2026 12:00:01 EDT news709207846 Quantum communication networks consist of several connected nodes that exchange information encoded in quantum states. These networks could potentially enable more secure communications between quantum devices in different locations. https://phys.org/news/2026-09-scientists-teleport-quantum-states-parallel.html Optics & Photonics Mon, 21 Sep 2026 11:20:06 EDT news709207814 Physicists at UC Santa Barbara have extended the search for evidence of microscopic black holes produced at the Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN). The formation of these tiny, fleeting objects at the LHC represents one way theorists have sought to resolve anomalies in our understanding of the basic structure of spacetime, while the method used to look for them demonstrates a new way of searching for new particles. https://phys.org/news/2026-09-physicists-quantum-black-holes-lhc.html General Physics Fri, 18 Sep 2026 14:20:07 EDT news708954181 Molecular gases are a new form of artificial quantum matter. However, when these molecules collide, they are often lost extremely rapidly. Researchers from Radboud University and Columbia University have been able to suppress this collisional loss, paving the way for strongly interacting quantum matter. This new artificial quantum matter allows researchers to study quantum behavior relevant to electrons in real materials. Their results are published in Science. https://phys.org/news/2026-09-extremely-stable-quantum-gas-lens.html Condensed Matter Fri, 18 Sep 2026 12:20:01 EDT news708945122 A team of researchers led by the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) developed an approach that enabled them to directly observe how electrons interact with defects in advanced semiconductor devices in unprecedented detail. The team's methodology included an innovative simulation tool that enabled accurate theoretical interpretations of its experimental observations. https://phys.org/news/2026-09-images-defects-electrons-stable-wigner.html Condensed Matter Thu, 17 Sep 2026 17:00:01 EDT news708866221 Physicists at The City College of New York have demonstrated a new way to transfer microwave signals onto light using magnetic waves inside a layered semiconductor. The work establishes a materials platform for building interfaces that could one day link quantum computers through optical networks. The research, titled "Microwave-to-optical transduction using magnon–exciton coupling," was led by the Laboratory for Nano and Micro Photonics (LaNMP) at CCNY, headed by physics professor Vinod M. Menon. It appears in the journal Nature Materials. https://phys.org/news/2026-09-bridge-quantum-networks-physicists-microwaves.html Optics & Photonics Thu, 17 Sep 2026 16:30:01 EDT news708880082 Somewhere between the microscopic realm of elementary particles and the macroscopic world of human beings, something strange happens: The rules of quantum physics, which work so exquisitely for tiny atoms, seem to lose their grip as objects grow larger. Pondering where and how this shift from small-scale quantum fuzziness to everyday sharp certainty happens gives rise to thought-experiment oddities like Schrödinger's famous dead-and-alive cat. The process by which quantum phenomena like superposition—the paradoxical affliction of Schrödinger's cat—fade into the classical reality we experience is known as decoherence. https://phys.org/news/2026-09-schrdinger-cat-underground-gravity-quantum.html General Physics Thu, 17 Sep 2026 15:00:11 EDT news708864241 A Stanford team has documented the first direct observation of quantum jumps of sound in a mechanical resonator, completing an arc of scientific exploration that started more than 100 years ago. https://phys.org/news/2026-09-real-quantum.html Quantum Physics Thu, 17 Sep 2026 14:00:42 EDT news708862261 Quantum computers are no longer theoretical concepts. Today, they are being developed to tackle a range of complex problems, including exploring financial risk, modeling complex molecules and optimizing massive logistics networks. However, until now, there has been no way to benchmark the computational power of different systems on the same scale to see how they compare. https://phys.org/news/2026-09-benchmark-quantum-reveals-limitations.html Quantum Physics Thu, 17 Sep 2026 13:10:02 EDT news708868060 Physicists at Johannes Gutenberg University Mainz (JGU) have developed a technology that uses quantum sensors to measure biomagnetic signals, such as heart activity. Researchers from the DIAQNOS (DIAmond-based Quantum Sensing for NeurOSurgery) flagship project, coordinated by Dr. Arne Wickenbrock in Mainz, have demonstrated the potential of quantum technology for future medical applications. https://phys.org/news/2026-09-diamond-quantum-sensors-heart-magnetism.html Condensed Matter Thu, 17 Sep 2026 11:40:08 EDT news708854822 When a material heats up, its electrical resistance often rises. The harder question is what, exactly, is getting in the way. The electrons carrying the current may be scattered by vibrations of the material's atomic lattice, known as phonons. They may also collide with one another. Frustratingly, a conventional temperature test warms the electrons and the lattice together, so the effects arrive tangled in the same resistance measurement. https://phys.org/news/2026-09-hot-electrons-reveal-electronic-collisions.html Condensed Matter Wed, 16 Sep 2026 19:40:01 EDT news708787802 In March 2026, scientists succeeded in transporting antiprotons by road for the first time in a purpose-built trap loaded on a truck. The BASE collaboration, which realized this experiment at the European Organization for Nuclear Research (CERN) in Geneva under the lead of Professor Dr Stefan Ulmer and Dr Christian Smorra from Heinrich Heine University Düsseldorf (HHU), now presents its findings and experiences from this pioneering experiment in the journal Nature. Among other things, they report that it was possible to store antiprotons in a mobile transport vessel for more than a month for the first time ever. https://phys.org/news/2026-09-mobile-antiprotons-road-month-world.html General Physics Wed, 16 Sep 2026 18:30:06 EDT news708792361 Rydberg atoms are considered promising building blocks for quantum computers and their precursors, quantum simulators. Researchers at the 5th Institute of Physics of the University of Stuttgart have achieved record values for the lifetime, size, and storage time of circular Rydberg atoms, a special form of Rydberg atom in which the electron occupies a state with maximum orbital angular momentum. The findings were published in Nature Communications. https://phys.org/news/2026-09-circular-rydberg-atoms-staying-stable.html Quantum Physics Wed, 16 Sep 2026 15:20:08 EDT news708781322 Xufeng Zhang is using magnets to make computers more power efficient at the quantum level. The Northeastern professor of electrical and computer engineering recently published two papers highlighting small-scale magnetic systems he and his team developed that could help make computers much more power efficient in the future. https://phys.org/news/2026-09-magnets-quantum.html Quantum Physics Tue, 15 Sep 2026 16:00:01 EDT news708706203 Does gravity act equally on all particles in the universe, or are there differences between ordinary and exotic matter? Physics professor Anna Soter and her team at ETH Zurich and the Paul Scherrer Institute (PSI) in Villigen are investigating this question. "We have taken an important step toward carrying out an exciting experiment on this topic," says Soter. "We want to measure the gravitational interaction of the muon." https://phys.org/news/2026-09-particle-einstein-theory-gravity.html General Physics Tue, 15 Sep 2026 09:40:06 EDT news708683461 The vast majority of modern quantum technologies—from quantum cryptography to the quantum internet to the quantum computer—rely on one essential element: the transmission of photons. Two qubits (two atoms, for example) exchange information: One qubit emits a photon, and the other qubit absorbs it. https://phys.org/news/2026-09-photons-reliable-quantum-communication.html Optics & Photonics Mon, 14 Sep 2026 12:20:06 EDT news708602102 Physicists at the University of Oxford have helped confirm that one of the strangest phenomena in physics—quantum entanglement—occurs even among some of the heaviest and most fleeting particles ever created. The discovery, made using the world's most powerful particle collider at CERN, has been published in Physical Review Letters. https://phys.org/news/2026-09-physicists-uncover-spooky-quantum-effect.html Quantum Physics Mon, 14 Sep 2026 10:12:41 EDT news708599518 In 1931, physicist Hans Bethe predicted that, in certain one-dimensional quantum systems, particles can bind together to form multi-particle states known as Bethe strings. Unlike ordinary molecules, which are held together by chemical bonds, Bethe strings arise purely from interactions between particles and exist only in one dimension. For decades, Bethe strings remained primarily a theoretical concept. https://phys.org/news/2026-09-ultracold-cesium-atoms-reveal-bethe.html Quantum Physics Mon, 14 Sep 2026 08:40:08 EDT news708593282