Articles tagged with Light Matter Interactions
Scientists have discovered how atoms and spins move together in electromagnons, a hybrid excitation that can be controlled with light. The study used time-resolved X-ray diffraction to reveal the atomic motions and spin movements, showing that atoms move first and then the spins fractionally later.
Scientists superposed two light beams twisted in the clockwise direction to create anti-clockwise twists in the dark regions of the resultant superposition. This discovery represents a step towards observing a peculiar phenomenon known as quantum backflow.
Researchers have successfully addressed and detected single rare-earth ions within an ensemble of atoms in a nanoparticle, enabling efficient light-matter interaction. This discovery brings researchers closer to creating a robust system for low-loss and fast interface between nodes of the future quantum internet.
Researchers at the University of Manchester have discovered a way to accelerate proton transport through graphene using light. This breakthrough could lead to more efficient hydrogen fuel cells and solar water-splitting devices.
Theoretical demonstration shows that an optical cavity can change the magnetic order of α-RuCl3 from a zigzag antiferromagnet to a ferromagnet solely by placing it into the cavity. The team's work circumvents practical problems associated with continuous laser driving.
Researchers at UEA have proposed a new method to investigate quantum-mechanical processes in molecules using quantum light. The study shows that phonon signatures can be detected in photon correlations, providing a toolbox for studying quantum sound interactions.
Researchers developed an accelerating wave equation to solve daily phenomena, revealing a well-defined direction of time. The framework also predicts energy conservation in certain situations, including exotic materials.
Researchers have developed soft implantable fibers that can deliver light to major nerves through the body, allowing for precise illumination of nerve pain. The fibers are flexible and stretch with the body, enabling scientists to study peripheral nerve disorders in animal models without constraining movement.
Scientists successfully demonstrated the deflection of terahertz waves using distorted photonic crystals, mimicking gravitational effects. This breakthrough has significant implications for 6G communications and graviton physics.
A Brazilian physicist has developed an alternative method that reduces calculation time for simulating light absorption by molecules from two days to a few hours. This allows for high-resolution microscopy and the creation of precise 3D structures for data storage, with potential applications in medicinal treatments.
Researchers at Caltech have detected magnetically bound excitons in an antiferromagnetic Mott insulator, a first in real-time experiments. This finding has implications for the development of new exciton-related technologies that harness both magnetic and optical properties.
Scientists have probed electron dynamics in liquids using intense laser fields, retrieving the electron's mean free path and gaining a deeper understanding of ultrafast processes. The research opens up new avenues for studying liquids and their role in chemical reactions.
Researchers at Max Planck Institute for the Structure and Dynamics of Matter demonstrated that intense laser fields can probe electron dynamics in liquids. The team found that the mechanism of high-harmonic generation is unique to liquids, with the maximum photon energy independent of laser wavelength.
Researchers have found that stacking order and lateral strain can significantly enhance second harmonic generation (SHG) in 2D Janus hetero-bilayers. The study demonstrates a threefold increase in SHG intensity with AA stacking, which is four times higher than AB stacking.
Scientists have developed a tiny, simple setup to make precise pressure measurements using light and sound waves. This method enables exploration of extreme thermodynamics in nanolitre volumes, revealing new properties in unique thermodynamic states of materials.
Researchers from Tokyo Tech have developed an organic light-emitting diode (OLED) with a remarkable ultralow turn-on voltage of 1.47V for blue emission. The device uses upconversion mechanism to reduce applied voltage, enabling efficient blue OLED production.
Researchers at Chinese Academy of Sciences Headquarters have developed flexible solar cells with efficiencies comparable to conventional solar cells. They achieved significant power conversion efficiency gains by optimizing the material composition and guest component location in ternary organic solar cells.
Scientists have developed a new approach to study molecular behavior in confined spaces, allowing for real-time tracking of individual molecules within nanofluidic structures. This breakthrough enables the use of single-photon emitters as nanoscale probes, providing unprecedented insights into molecular properties and behaviors.
A team of researchers developed a one-of-a-kind spatial light modulator capable of ultra-fast, amplitude-only modulation without modifying the optical phase. The device uses chalcogenide phase change materials, achieving improvements that could be exploited in wavefront shaping experiments and communications.
Quantum ghost imaging allows 3D imaging on a single photon level, enabling the lowest photon dose possible. The technique can be applied to image materials and tissues sensitive to light or drugs without risk of damage.
A team of scientists has successfully elucidated the structure and function of LITE-1, a biomolecule used by Caenorhabditis elegans to detect danger. The researchers used artificial intelligence to predict the structure of LITE-1, which is a channel protein that forms a pore in the cell membrane allowing charged particles to pass through.
The study investigated high harmonic spectroscopy as a method to observe topology in materials. Despite thorough analysis, the researchers found that non-topological aspects of the system dominated its response, suggesting that topology may play a minor role.
Bound states in the continuum (BICs) provide a generalized approach to achieve extremely high-Q resonant cavities. BICs offer powerful mechanisms for enhancing light-matter interactions and have been explored in various photonic structures over the past few decades.
A new approach boosts light absorption in thin silicon photodetectors with photon-trapping structures, increasing the absorption efficiency over a wide band in the NIR spectrum. The findings demonstrate a promising strategy to enhance the performance of Si-based photodetectors for emerging photonics applications.
Metalenses have been developed with differentiated design principles to eliminate chromatic aberration. By merging bright spots into a single focusing spot, researchers achieved an efficiency of up to 43% and demonstrated the versatility of their approach for various optical applications.
Researchers at Rice University have discovered a metal oxide that can enable terahertz technology for quantum sensing. The material, strontium titanate, exhibits unique properties that allow it to interact strongly with terahertz light, forming new particles called phonon-polaritons.
Scientists at University of Konstanz have developed a method to compress an electron beam into short pulses using femtosecond light flashes. The resulting electron pulses exhibit temporal superposition and can be used to study ultrafast phenomena in quantum mechanics, including the interaction between electrons and light.
Researchers from UT Austin created a new composite material that efficiently converts low energy light to higher energy, with applications in bioimaging, solar panels, and night vision goggles. The breakthrough could reduce the size of solar panels by 30% and enable systems for autonomous vehicles and fog detection.
The team uses a continuous-wave laser to create ultrashort electron pulses, allowing for attosecond time resolution. They investigate nanophotonic phenomena and film electromagnetic processes inside waveguide materials, opening up new developments in photonic integrated circuits and metamaterials.
A team of scientists at DESY has developed a new technique using X-rays to image biological specimens without damaging them. The method, which generates high-resolution images at nanometre resolution, could be used for applications such as imaging whole unsectioned cells or tracking nanoparticles within a cell.
Research team settles decade-long debate on Ta2NiSe5's microscopic origin of symmetry breaking; structural instability hinders electronic superfluidity. Advanced experiments and calculations confirm crystal structure changes as driving force behind phase transition.
A team from Nanjing University and Sun Yat-Sen University developed a two-facing Janus OPO scheme for generating high-efficiency, high-purity broadband LG modes with tunable topological charge. The output LG mode has a tunable wavelength between 1.5 μm and 1.6 μm, with a conversion efficiency above 15 percent.
Researchers at Max Planck Institute discover that exciting electrons with strong light leads to exotic quantum effects, enabling new functions on demand. The team made an unforeseen discovery: Floquet bands form after a single optical cycle, paving the way for ultrafast electronics and tailored quantum functions.
A team of researchers at the Max Born Institute developed a novel method for X-ray Magnetic Circular Dichroism (XMCD) spectroscopy using a laser-driven plasma source. This breakthrough enables precise determination of magnetic moments in buried layers without damaging samples, and can monitor ultrafast magnetization processes.
Scientists have developed a new microscopy method that allows for non-invasive observation of mechanical properties in developing embryos. The line-scanning Brillouin microscopy (LSBM) technique provides faster imaging, reduced light-induced damage, and simultaneous visualization of biomolecules.
A team of physicists and physical chemists from the University of Würzburg and the University of Ottawa has developed a new method to separate single and multiple excitations in laser spectroscopy. This breakthrough resolves a decades-old problem, enabling accurate analysis of materials and fundamental physical phenomena.
Researchers have developed a new type of OLED display that uses strong coupling of light and matter to improve color saturation and brightness. The displays, known as polariton-based OLEDs, achieve this without compromising efficiency or viewing angle dependency.
The γ-MnO2 dual-core pair-hole fiber enables the production of an all-fiber mode-locked laser with a pulse width of about 1 ps and a repetition frequency of about 600 MHz. This fabrication scheme offers good stability and is suitable for combining other novel materials with specialty fibers, expanding ultrafast optics and sensing appli...
Researchers at the University of Ottawa have developed a new technique to differentiate the mirror images of a chiral molecule, a problem that was believed to be unsolvable for nearly 20 years. The team used linear polarized helical light beams to enhance sensitivity and observed differential absorption in achiral molecules.
Researchers have discovered new waves with picometer-scale spatial variations of electromagnetic fields that can propagate in semiconductors like silicon. This finding enables the emergence of 'picophotonics,' which may lead to the design of new optical devices and applications in quantum technologies.
A research team from DTU has successfully designed and built a structure that concentrates light in a volume 12 times below the diffraction limit, paving the way for revolutionary new technologies. The breakthrough could lead to more sustainable chip architectures that use less energy.
Australian researchers have engineered a quantum box for polaritons in a two-dimensional material, achieving large polariton densities and a partially 'coherent' quantum state. The novel technique allows researchers to access striking collective quantum phenomena and enable ultra-energy-efficient technologies.
Scientists at Swinburne University of Technology and FLEET collaborators observe and explain signatures of Fermi polaron interactions in atomically-thin WS2 using ultrafast spectroscopy. Repulsive forces arise from phase-space filling, while attractive forces lead to cooperatively bound exciton-exciton-electron states.
Kennesaw State University's Department of Physics has received two independent NSF LEAPS-MPS grants to explore magnetic, electronic, and out-of-equilibrium properties of matter. The research aims to drive innovation in semiconductors and quantum computing, with potential applications in energy-efficient information storage.
A new MIT study suggests that current opacity models used by astronomers may not be accurate enough to interpret the precise light-based signals from the James Webb Space Telescope. The researchers predict that properties of planetary atmospheres, such as temperature and elemental composition, could be off by an order of magnitude if e...
The study proposes merging bound states in continuum (BICs) using higher topological charges, significantly enhancing Q factors and suppressing scattering loss. The approach enables steerable BICs with designed momentum, improving performance for direction-related applications.
Scientists have developed a novel method to probe the longitudinal distribution of light-matter interaction in gap-mode plasmonic nanocavities. By embedding monolayer MoS2 as an emitter in the nanogap, they achieve spatial resolution of ~1 nm and observe significant photoluminescence enhancement factors up to 2800 times.
Researchers at the University of Innsbruck developed a new technique to track levitated nanoparticles with improved precision. By using the reflected light of a mirror, they outperformed state-of-the-art detection methods and opened up new possibilities for nanoparticle-based sensing applications.
Researchers successfully manipulated energy levels in tungsten diselenide to induce luminescence, a breakthrough for controlling matter through light fields. The discovery could enhance optical properties of organic semiconductors, leading to innovative LED and solar cell applications.
Scientists have made a pivotal new breakthrough in controlling light to evolve the next generation of quantum sensing and computing. The team has shown that controlling light can be achieved by inducing and measuring a nonlinear phase shift down to a single polariton level.
FeRh, a metal with antiferromagnetic and ferromagnetic phases, has its phase transition kinetics measured using ultrafast techniques. The study reveals new insights into the ultrafast dynamics of magnetic materials.
A team of researchers has observed a new kind of wave mixing process involving soft x-rays, allowing for selective tracking of electrons in materials. By analyzing this process, they gain insights into the nature of the material and its electronic structure.
Scientists at IIT realized coupled light vortices forming an ordered structure, a light crystal. They developed metasurfaces to control laser beams and created 100 light vortices with tunable topology, enabling new properties for optical communications and simulations of complex systems.
Scientists create microstructures that control light to display colors with high contrast using a novel additive manufacturing process. The team prints blue, green, yellow, and orange pictures on flexible substrates, including water bottles.
Researchers have observed persistent swinging of electrons between atomic sites in crystals using ultrafast X-ray diffraction. The study reveals relocation of valence charge on the length scale of interatomic distances, paving the way for future studies of functional materials.
Scientists create novel phase-matching strategy to enable wide-tunable deep-UV SHG, covering 111 nm range, and demonstrate its potential in nonlinear optics and photonics applications.
Researchers have discovered the opto-ionic effect, where light increases the mobility of ions in ceramic materials, improving the performance of devices such as solid-state electrolytes in fuel cells and lithium-ion batteries. This effect could lead to higher charging speeds and more efficient energy conversion technologies.
For the first time, researchers have imaged the full structure of trapped excitons, a breakthrough that could lead to new semiconductor technologies. The study reveals detailed insights into the behavior of excitons, including their size, motion, and stability.
Researchers review current research on 2D materials, highlighting their potential for quantum light sources and integrated circuits. The scientists also discuss recent advances in hybrid devices and scalable quantum photonic technologies.
Researchers have created a new, simpler way to fabricate SERS nanostructures with superior stability and performance at low cost. By using a heat-resistant polymer called polyimide (PI), they can produce nanosurfaces with nanopillars that enhance signal intensity for efficient chemical detection. The new fabrication method has the pote...