Time interfaces: The gateway to four-dimensional quantum optics
Peer-Reviewed Publication
Updates every hour. Last Updated: 18-Jun-2025 04:10 ET (18-Jun-2025 08:10 GMT/UTC)
A new study from the University of Eastern Finland (UEF) explores the behavior of photons, the elementary particles of light, as they encounter boundaries where material properties change rapidly over time. This research uncovers remarkable quantum optical phenomena which may enhance quantum technology and paves the road for an exciting nascent field: four-dimensional quantum optics.
Electrons possess electrical charge but also magnetic spin and orbital angular momentum. While charge and spin currents have driven advancements in electronics and spintronics, respectively, generating “orbital currents” has remained a challenge. An international research team has now successfully observed “orbital pumping,” a new phenomenon in which orbital currents are generated from the precession of magnetization in magnetic materials. The discovery could provide the foundation for “orbitronic” technologies based on orbital currents.
Polymer scientists at the University of Groningen and NHL Stenden University of Applied Sciences (the Netherlands) have developed a novel microwave-assisted chemical recycling process for aramid fibres.
26.02.2025/Kiel. The south-western Baltic Sea has about 3,000 kilograms of dissolved toxic chemicals released from unexploded ordnance, according to a new study by the GEOMAR Helmholtz Centre for Ocean Research Kiel. The substances were detected in almost all water samples taken in 2017 and 2018, with particularly high concentrations in the Bights of Kiel and Lübeck. The levels are still below thresholds for health risk, but highlight the urgent need for munitions clearance to minimise long-term risks. The study has now been published in the journal Chemosphere.
New double network hydrogel technology features automated self-strengthening that rapidly activates upon deformation of its polymer network.
A team of researchers from the University of Oxford, in collaboration with Thames Valley Police, the National Crime Agency, the John Radcliffe Hospital, Lurtis Ltd. and Cardiff University, has developed an advanced physics-based AI-driven tool to aid the forensic investigation of traumatic brain injuries (TBI).
New Curtin University research has revealed how massive ancient glaciers acted like giant bulldozers, reshaping Earth’s surface and paving the way for complex life to flourish.
By chemically analysing crystals in ancient rocks, the researchers discovered that as glaciers carved through the landscape, they scraped deep into the Earth’s crust, releasing key minerals that altered ocean chemistry.
This process had a profound impact on our planet’s composition, creating conditions that allowed complex life to evolve.