/ en-us Â鶹ÒùÔº internet news portal provides the latest news on science including: Â鶹ÒùÔºics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Researchers at the Leibniz Institute of Photonic Technology (Leibniz IPHT) in Jena, Germany, together with international collaborators, have developed two complementary methods that could make quantum communication via fiber optics practical outside the lab. /news/2025-07-photon-bins-stability-quantum-communication.html Optics & Photonics Quantum Â鶹ÒùÔºics Tue, 01 Jul 2025 13:02:21 EDT news670593734 Randomness is incredibly useful. People often draw straws, throw dice or flip coins to make fair choices. Random numbers can enable auditors to make completely unbiased selections. Randomness is also key in security; if a password or code is an unguessable string of numbers, it's harder to crack. Many of our cryptographic systems today use random number generators to produce secure keys. /news/2025-06-quantum-mechanics-random-demand.html Quantum Â鶹ÒùÔºics Wed, 11 Jun 2025 11:00:11 EDT news668766840 Sunlight sparkling on water evokes the rich phenomena of liquid-light interaction, spanning spatial and temporal scales. While the dynamics of liquids have fascinated researchers for decades, the rise of neuromorphic computing has sparked significant efforts to develop new, unconventional computational schemes based on recurrent neural networks, crucial to supporting wide range of modern technological applications, such as pattern recognition and autonomous driving. As biological neurons also rely on a liquid environment, a convergence may be attained by bringing nanoscale nonlinear fluid dynamics to neuromorphic computing. /news/2022-07-neuromorphic-optically-driven-nonlinear-fluid.html Optics & Photonics Mon, 25 Jul 2022 15:00:05 EDT news577978901 Intense mid-infrared excitation has been demonstrated as a powerful tool for controlling the magnetic, ferroelectric and superconducting properties of complex materials. Nonlinear phononics is key to this end, as it displaces specific atoms away from their equilibrium positions to manipulate microscopic interactions. So far, this effect has been thought to occur only within the optically excited volume. Now researchers in Hamburg discovered that the polarization reversal in ferroelectric lithium niobate (LiNbO3) even occurs in areas well away from the direct light 'hit'. The hitherto unknown phenomenon—called nonlocal nonlinear phononics—has been published in Nature Â鶹ÒùÔºics. /news/2022-03-remote-functional-materials.html Nanophysics Nanomaterials Wed, 09 Mar 2022 11:22:44 EST news566047354 The 3D Dirac and Weyl semimetals can be characterized by a charge chirality with the parallel or antiparallel locking of electron spin in its momentum. Such materials can exhibit a chiral magnetic effect associated with the near conservation of chiral charge. In this work, Bing Cheng and a research team in physics and astronomy at the Johns Hopkins University and materials science at the University of California, Santa Barbara, used magneto-terahertz spectroscopy to study epitaxial cadmium arsenide (Cd3As2) films—a widely explored material in solid-state physics to extract their conductivities as a function of chiral magnetic effect . When the team applied the field, they noted a markedly sharp Drude response – a highly acclaimed model of electronic transport suggested by physicist Paul Drude more than 100 years ago. The Drude response rose out of the broader background of this system as a definitive signature of a new transport channel consistent with the chiral response. The field independence of the chiral relaxation established that it was set by the approximate conservation of the isospin in the setup. /news/2021-04-chiral-anomaly-dirac-semimetal.html Soft Matter Quantum Â鶹ÒùÔºics Thu, 29 Apr 2021 09:30:02 EDT news538821031 Sometimes in shallow water, a type of wave can form that is much more stable than ordinary waves. Called solitons, these phenomena emerge as solitary waves and can travel long distances while maintaining their shape and speed, even after colliding with other waves. /news/2019-08-patterns-typically.html General Â鶹ÒùÔºics Mon, 12 Aug 2019 07:30:01 EDT news484791939 In quantum electrodynamics, the choice of gauge (i.e. specific mathematical formalism used to regulate degrees of freedom) can greatly influence the form of light-matter interactions. Interestingly, however, the "gauge invariance" principle implies that all physical results should be independent from a researcher's choice of gauge. The quantum Rabi model, which is often used to describe light-matter interactions in cavity-QED, has been found to violate this principle in the presence of ultrastrong light-matter coupling, and past studies have attributed this failure to the finite-level truncation of the matter system. /news/2019-06-gauge-invariance-ultrastrong-coupling-cavity-quantum.html Quantum Â鶹ÒùÔºics Tue, 18 Jun 2019 09:30:01 EDT news479979048 New photonic tools for medical imaging can be used to understand the nonlinear behavior of laser light in human blood for theranostic applications. When light enters biological fluids it is quickly scattered, however, some cell suspensions can induce nonlinear responses in laser beams to self-focus and enhance the penetration of light for biomedical applications as a quantifiable marker of disease. In a recent study now published in Light: Science and Applications, Rekha Gautam and her colleagues at the San Francisco State University and an international team of co-workers showed that a laser beam shining through red blood cell suspensions could become "self-trapped." The process reduced light scattering to retain the power of the beam of laser light within the biological samples. /news/2019-03-optical-force-induced-self-guiding-human-red.html Optics & Photonics Thu, 21 Mar 2019 09:30:03 EDT news472284182 The production of nano-scale devices has drastically increased with the rise in technological applications, yet a major drawback to the functionality of nano-sized systems is the need for an equally small energy resource. /news/2017-09-small-scale-energy-harvesters-large.html Nanophysics Thu, 28 Sep 2017 11:09:10 EDT news425815738 (Â鶹ÒùÔºOrg.com) -- An international team of scientists led by King’s College London has taken a step closer towards developing optical components for super-fast computers and high-speed internet services of the future. This has the potential to revolutionise data processing speeds by transmitting information via light beams rather than electric currents. /news/2011-01-material-enables.html Nanophysics Tue, 25 Jan 2011 11:17:45 EST news215176593