Photonic

Quantum computing is advancing, with giants like Google and IBM providing services, yet challenges remain due to insufficient qubits and their susceptibility to external influences, requiring complex entanglement for reliable results. Photonic approaches offer room temperature operation and faster speeds, but face loss issues; however, a novel method demonstrated by researchers uses laser pulses to create inherently error-correcting logical qubits, simplifying quantum computing but still needing improvements in error…

At the University of Rostock, researchers have combined PT symmetry with topology in photonic chips, challenging previous beliefs about open systems and topological insulators, and paving the way for innovative technological applications. Credit: SciTechDaily.comGroundbreaking research merges PT symmetry with topology, offering new insights into open systems and the potential for advanced technological circuits.Whether describing the orbits of planets or the inner workings of the atom, a key paradigm in physics is the…

Scientists have innovated a compact semiconductor chip integrating electronics with photonics, drastically enhancing RF bandwidth and control. This breakthrough, pivotal for advanced telecommunications and radar systems, marks a significant step in semiconductor technology, boosting Australia’s potential in semiconductor research and manufacturing (Artist’s concept). Credit: SciTechDaily.comIntegrating photons into electronic chips enhances bandwidth and improves filter control.Researchers at the University of Sydney Nano…

Illustration of the core of the photonic cavity that was fabricated as two halves that assembled themselves into one unit. The cavity confines light inside the gap, which is only a few atoms wide as indicated in the field of view of the magnifying glass. Credit: Thor A. S. Weis In a new Nature paper, two nanotechnology approaches converge by employing a new generation of fabrication technology. It combines the scalability of semiconductor technology with the atomic dimensions enabled by self-assembly. A central goal in…

New advanced photonic chips have been developed that optimize light transmission for optical wireless systems. These chips, essential for future 5G and 6G networks, represent a shift towards energy-efficient analog technologies and have wide-ranging applications in high-speed data processing and communication. Credit: Politecnico di Milano A new breakthrough in optical wireless technology features photonic chips that efficiently shape light for improved data transmission, pivotal for the advancement of future wireless…

Researchers have developed a new method to create compact mode-locked lasers on photonic chips, using lithium niobate for active mode-locking. This technology promises to bring large-scale ultrafast laser experiments to a chip-scale format, with plans to further shorten pulse durations and increase peak powers.Caltech has innovated a method for creating compact, integrated mode-locked lasers on photonic chips, potentially transforming ultrafast laser applications to smaller scales with enhanced performance.Lasers have…

A programmable chip is used to process the quantum information transmitted by single photons. Each pink dot represents a single photon, and the links between them represent quantum entanglement – which is the way quantum information is shared between different photons. Credit: Stefano PaesaniScientists at the Niels Bohr Institute, in cooperation with the University of Münster and Ruhr-Universität Bochum, developed new technology capable of processing the enormous amounts of information quantum systems generate. They’ve…

Scientists experimenting with some of the most fundamental laws of physics have found more evidence of what they're calling photonic time crystals (PTCs): materials in which the speed at which light moves (the refractive index) oscillates very quickly.We already know much more about photonic crystals, where a repeating pattern in a material creates a shifting in the refractive index over an area of space; you can see this in the shimmering of insect wings or precious minerals. With PTCs, the element of changing over time…

Researchers have created a device that uses photonic radar to remotely and accurately monitor breathing, even distinguishing between more than one patient. They say their device might one day be used in hospitals, aged care facilities and at home to provide contactless monitoring of people with respiratory concerns.Monitoring a patient’s vital signs is, well, vital to tracking their health and bodily functions. Many current methods used in hospitals require wired contact with the patient – think of those sticky electrodes…

Credit: Nicolle R. Fuller, Sayo StudioResearchers are exploring photonic computing as an alternative to silicon-based technologies due to the difficulties in manufacturing tiny silicon transistors.The never-ending quest for faster, smaller computers that can do more has led manufacturers to design ever tinier transistors that are now packed into computer chips by the tens of billions.And so far, this tactic has worked. Computers have never been more powerful than they are now. But there are limits: Traditional silicon…