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. Rice University physicists have shown that immutable topological states, which are highly sought for quantum computing, can be entangled with other manipulable quantum states in some materials. https://phys.org/news/2023-08-materials-immutable-topological-states-entangled.html General Physics Quantum Physics Wed, 02 Aug 2023 16:10:29 EDT news610211424 A collaboration of nuclear theorists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory, Argonne National Laboratory, Temple University, Adam Mickiewicz University of Poland, and the University of Bonn, Germany, has used supercomputers to predict the spatial distributions of charges, momentum, and other properties of "up" and "down" quarks within protons. The results, just published in Physical Review D, revealed key differences in the characteristics of the up and down quarks. https://phys.org/news/2023-08-reveal-high-resolution-view-quarks-protons.html Quantum Physics Wed, 02 Aug 2023 13:18:35 EDT news610201107 A common metal paper clip will stick to a magnet. Scientists classify such iron-containing materials as ferromagnets. A little over a century ago, physicists Albert Einstein and Wander de Haas reported a surprising effect with a ferromagnet. If you suspend an iron cylinder from a wire and expose it to a magnetic field, it will start rotating if you simply reverse the direction of the magnetic field. https://phys.org/news/2023-08-scientists-unusual-ultrafast-motion-layered.html Condensed Matter Quantum Physics Wed, 02 Aug 2023 13:17:30 EDT news610201043 Electronic devices typically use the charge of electrons, but spin—their other degree of freedom—is starting to be exploited. Spin defects make crystalline materials highly useful for quantum-based devices such as ultrasensitive quantum sensors, quantum memory devices, or systems for simulating the physics of quantum effects. Varying the spin density in semiconductors can lead to new properties in a material—something researchers have long wanted to explore—but this density is usually fleeting and elusive, thus hard to measure and control locally. https://phys.org/news/2023-08-microscopic-density-materials.html Condensed Matter Quantum Physics Wed, 02 Aug 2023 10:39:34 EDT news610191567 An international team of physicists has found that deep-learning AI technology can accurately quantify the amount of entanglement in a given system—prior research has shown that the degree of "quantumness" of a given system can be described by a single number. In their paper, published in the journal Science Advances, the group describes their technique and how well it worked when tested in a real-world environment. https://phys.org/news/2023-08-ai-accurately-quantify-amount-entanglement.html Quantum Physics Tue, 01 Aug 2023 09:27:03 EDT news610100819 Everyday life involves the three dimensions (3D), along an X, Y and Z axis, or up and down, left and right, and forward and back. But in recent years scientists, like Guoliang Huang, the Huber and Helen Croft Chair in Engineering at the University of Missouri, have explored a "fourth dimension" (4D), or synthetic dimension, as an extension of our current physical reality. https://phys.org/news/2023-07-scientists-approach-energy-4d.html Condensed Matter Quantum Physics Mon, 31 Jul 2023 14:53:02 EDT news610033981 Quantum memory that depends on quantum-band integration is a key building block used to develop quantum networks that are compatible with fiber communication infrastructures. Quantum engineers and IT specialists have yet to create such a network with large capacity to form an integrated multimode photonic quantum memory at telecom band. https://phys.org/news/2023-07-telecom-band-integrated-multimode-photonic-quantum-memory.html Optics & Photonics Quantum Physics Mon, 31 Jul 2023 13:10:54 EDT news610027848 Many substances change their properties when they are cooled below a certain critical temperature. Such a phase transition occurs, for example, when water freezes. However, in certain metals there are phase transitions that do not exist in the macrocosm. They arise because of the special laws of quantum mechanics that apply in the realm of nature's smallest building blocks. https://phys.org/news/2023-07-electrons-slowly-cooling-effect-unique.html Condensed Matter Quantum Physics Mon, 31 Jul 2023 11:58:04 EDT news610023482 A long-standing challenge in the field of quantum physics is the efficient synchronization of individual and independently generated photons (i.e., light particles). Realizing this would have crucial implications for quantum information processing that relies on interactions between multiple photons. https://phys.org/news/2023-07-team-synchronizes-photons-atomic-quantum.html Optics & Photonics Quantum Physics Sun, 30 Jul 2023 09:10:01 EDT news609674506 The CMS collaboration has recently presented new results in searches for long-lived heavy neutral leptons (HNLs). Also known as "sterile neutrinos", HNLs are interesting hypothetical particles that could solve three major puzzles in particle physics: they could explain the smallness of neutrino masses via the so-called "see-saw" mechanism, they could explain the matter-antimatter asymmetry of the universe, and at the same time they could provide a candidate for dark matter. https://phys.org/news/2023-07-sterile-neutrinos-cms-muon.html General Physics Quantum Physics Fri, 28 Jul 2023 14:06:50 EDT news609772008 Using ultra-high-precision laser spectroscopy on a simple molecule, a group of physicists led by Professor Stephan Schiller Ph.D. from Heinrich Heine University Düsseldorf (HHU) has measured the wave-like vibration of atomic nuclei with an unprecedented level of precision. https://phys.org/news/2023-07-atomic-nuclei-vibrate-greater-degree.html Quantum Physics Fri, 28 Jul 2023 11:57:43 EDT news609764260 Some of our most important everyday items, such as computers, medical equipment, stereos, generators, and more, work because of magnets. We know what happens when computers become more powerful, but what might be possible if magnets became more versatile? What if one could change a physical property that defined their usability? What innovation might that catalyze? https://phys.org/news/2023-07-anomalous-hall-effect-berry-curvature.html Condensed Matter Quantum Physics Wed, 26 Jul 2023 10:25:57 EDT news609585953 Looking only at their subatomic particles, most materials can be placed into one of two categories. https://phys.org/news/2023-07-quantum-avalanche-nonconductors-conductors.html Condensed Matter Quantum Physics Mon, 24 Jul 2023 17:02:27 EDT news609436937 In a recent publication in the journal Advanced Materials Interfaces, the research team led by first author Dr. Philip Schädlich, a research associate at the Professorship of Experimental Physics, presents a method for the detailed structural analysis of synthesized two-dimensional lead layers on a specially manufactured system for the first time. https://phys.org/news/2023-07-monoatomic-layers-specially-method.html Condensed Matter Quantum Physics Mon, 24 Jul 2023 10:36:40 EDT news609413772 In the 11 years since its discovery at the Large Hadron Collider (LHC), the Higgs boson has become a central avenue for shedding light on the fundamental structure of the universe. Precise measurements of the properties of this special particle are among the most powerful tools physicists have to test the Standard Model, currently the theory that best describes the world of particles and their interactions. At the Lepton Photon Conference this week, the ATLAS collaboration reported how it has measured the mass of the Higgs boson more precisely than ever before. https://phys.org/news/2023-07-atlas-precision-higgs-boson-mass.html General Physics Quantum Physics Fri, 21 Jul 2023 13:32:02 EDT news609165121 The discovery of the Higgs Boson in 2012 represented a major turning point for particle physics marking the completion of what is known as the standard model of particle physics. Yet, the standard model can't answer every question in physics, thus, since this discovery at the Large Hadron Collider (LHC) physicists have searched for physics beyond the standard model and to determine what shape future physics will take. https://phys.org/news/2023-07-particle-era-physics.html General Physics Quantum Physics Thu, 20 Jul 2023 12:15:17 EDT news609074114 Quantum technologies, a wide range of devices that operate by leveraging the principles of quantum mechanics, could significantly outperform classical devices on some tasks. Physicists and engineers worldwide have thus been working hard to achieve this long-sought "quantum advantage" over classical computing approaches. https://phys.org/news/2023-07-quantum-radar-outperforms-classical.html General Physics Quantum Physics Thu, 20 Jul 2023 09:10:01 EDT news609062270 Nearly a century ago, physicists Max Born and J. Robert Oppenheimer developed an assumption regarding how quantum mechanics plays out in molecules, which are comprised of intricate systems of nuclei and electrons. The Born-Oppenheimer approximation assumes that the motion of nuclei and electrons in a molecule are independent of each other and can be treated separately. https://phys.org/news/2023-07-unveiling-quantum-reveal-nexus-vibrational.html Optics & Photonics Quantum Physics Wed, 19 Jul 2023 12:37:01 EDT news608989017 A team led by Prof. Li Chuanfeng and Prof. Xu Jinshi from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), collaborating with Prof. Chen Jingling from Nankai University and Prof. Adán Cabello from the University of Seville, studied the single-system version of multipartite Bell nonlocality, and observed the highest degree of quantum contextuality in single system. Their work was published in Physical Review Letters. https://phys.org/news/2023-07-strongest-quantum-contextuality.html Quantum Physics Wed, 19 Jul 2023 09:38:03 EDT news608978281 A team led by Prof. Guo Guoping and Prof. Cao Gang from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), collaborating with Sigmund Kohler from Materials Science Institute of Madrid, have developed a response theory applicable to strongly coupled and multiqubit systems. Their study was published in Physical Review Letters. https://phys.org/news/2023-07-theory-periodically-driven-quantum-dotcavity.html Condensed Matter Quantum Physics Tue, 18 Jul 2023 11:26:02 EDT news608898361 Researchers from the Center of Theoretical Physics of Complex Systems within the Institute for Basic Science (PCS-IBS) made an important discovery that describes the relationship between synchronization and thermodynamics in quantum systems. https://phys.org/news/2023-07-unveiling-synchronization-quantum-thermal-machines.html Quantum Physics Tue, 18 Jul 2023 10:54:28 EDT news608896465 Experts from CERN, DESY, IBM Quantum and others have published a white paper identifying activities in particle physics that could benefit from the application of quantum-computing technologies https://phys.org/news/2023-07-quantum-future-particle-physics.html Quantum Physics Mon, 17 Jul 2023 16:37:54 EDT news608830671 Over the past decades, physicists and engineers have been trying to develop various technologies that leverage quantum mechanical effects, including quantum microscopes. These are microscopy tools that can be used to study the properties of quantum particles and quantum states in depth. https://phys.org/news/2023-07-solid-state-quantum-microscope-functions-atomic.html General Physics Quantum Physics Mon, 17 Jul 2023 11:20:01 EDT news608810721 In the Large Hadron Collider (LHC), proton and lead beams travel close to the speed of light. They carry a strong electromagnetic field that acts like a flux of photons as the beam moves through the accelerator. When the two beams at the LHC pass by close to each other without colliding, one of the beams may emit a photon of very high energy that strikes the other beam. This can result in photon—nucleus, photon—proton, and even photon—photon collisions. https://phys.org/news/2023-07-alice-results-nature-gluonic-large.html General Physics Quantum Physics Fri, 14 Jul 2023 11:14:16 EDT news608552053 A new theoretical study provides a framework for understanding nonlocality, a feature that quantum networks must possess to perform operations inaccessible to standard communications technology. By clarifying the concept, researchers determined the conditions necessary to create systems with strong, quantum correlations. https://phys.org/news/2023-07-criterion-nonlocal-quantum-behavior-networks.html Quantum Physics Thu, 13 Jul 2023 15:23:03 EDT news608480581 A team of researchers from the Massachusetts Institute of Technology has achieved a milestone in quantum technologies, demonstrating for the first time the control of quantum randomness. https://phys.org/news/2023-07-quantum-fluctuations-potential-ultra-precise-field.html Quantum Physics Thu, 13 Jul 2023 14:00:01 EDT news608442024 Routing signals and isolating them against noise and back-reflections are essential in many practical situations in classical communication as well as in quantum processing. In a theory-experimental collaboration, a team led by Andreas Nunnenkamp from the University of Vienna and Ewold Verhagen based at AMOLF, Amsterdam, has achieved unidirectional transport of signals in pairs of "one-way streets." This research published in Nature Physics opens up new possibilities for more flexible signaling devices. https://phys.org/news/2023-07-dual-carriageways-possibilities-flexible-devices.html Quantum Physics Thu, 13 Jul 2023 11:01:03 EDT news608464861 The future of electronics will be based on novel kinds of materials. Sometimes, however, the naturally occurring topology of atoms makes it difficult for new physical effects to be created. To tackle this problem, researchers at the University of Zurich have now successfully designed superconductors one atom at a time, creating new states of matter. https://phys.org/news/2023-07-superconductors-built-atom.html Superconductivity Quantum Physics Thu, 13 Jul 2023 10:59:03 EDT news608464741 Nothing exists in a vacuum, but physicists often wish this weren't the case. If the systems that scientists study could be completely isolated from the outside world, things would be a lot easier. https://phys.org/news/2023-07-physicists-loss-quantum.html Quantum Physics Thu, 13 Jul 2023 04:32:35 EDT news608441550 The quantum nature of interactions between elementary particles allows drawing non-trivial conclusions even from processes as simple as elastic scattering. The ATLAS experiment at the LHC accelerator reports the measurement of fundamental properties of strong interactions between protons at ultra-high energies. https://phys.org/news/2023-07-quantum-proton-billiards-atlas-fundamental.html General Physics Quantum Physics Mon, 10 Jul 2023 17:02:34 EDT news608227348