Articles tagged with Photons
A team of scientists has developed a novel type of quantum emitter formed from spatially separated InGaN monolayer islands. The isolated islands exhibit high photostability and can be spectrally filtered to act as bright, fast single photon emitters at a wavelength of ~400 nm.
Researchers have developed a new type of solar cell that can reflect 99% of the energy it can't convert into electricity, allowing for more efficient use of waste heat from exhaust pipes and chimneys. This technology has the potential to make renewable energy storage cheaper by ten-fold compared to traditional battery-based systems.
Researchers at Helmholtz-Zentrum Dresden-Rossendorf have designed a silicon-based light source to generate single photons, a crucial component for quantum cryptography and communication. The prototype can produce 100,000 single photons per second and is stable even after several days of continuous operation.
Researchers have discovered a simple method for creating a curved photonic beam using a microparticle, which can be used for various applications such as microscopy and lithography. This breakthrough enables the creation of more flexible and versatile photonics devices.
Researchers at Stanford University have developed a system that can reconstruct three-dimensional hidden scenes based on the movement of individual particles of light. This technique complements other vision systems and is more focused on large-scale situations, such as navigating self-driving cars in fog or heavy rain.
Researchers at the University of Tokyo have developed a new tool to analyze molecules that is 100 times faster than previous methods. This new method, called time-stretch infrared spectroscopy, can achieve 80 million spectra per second.
Researchers have made breakthroughs in understanding dispersion's impact on entangled photon systems, allowing for more reliable communication networks. This discovery could enable faster data transmission rates and secure secret sharing.
Researchers trap and control light at the interface of atomically thin nanomaterials, leveraging topological effects to create predictable and controllable photonics. The study demonstrates on-and-off electric switching and dimensional hierarchy of the device's topology.
Researchers at Yokohama National University developed a new method to produce entangled photons compatible with quantum memories, allowing for long-distance quantum communication through optical fibers. This breakthrough could enable the creation of a quantum internet linking quantum computers.
Researchers develop a non-toxic Cs2Ag0.6Na0.4In0.85Bi0.15Cl6 double perovskite scintillator for high-performance X-ray imaging with low doses, enabling high-resolution images in medical and industrial applications.
Researchers successfully bound two negatively charged electron-like particles using photons, creating a novel form of matter called a Photon Bound Exciton. This discovery enables the creation of novel artificial atoms with designer electronic configurations.
Researchers at Tomsk Polytechnic University have developed a new method to significantly increase the operation range and stability of optical tweezers. This technology uses dielectric particles to form a photonic jet, which acts as a trap or tweezers, allowing for more precise control over micron-sized objects.
The 'Gamma Factory' initiative aims to develop a high-intensity gamma rays source using accelerated ion beams and laser beams. This will enable detailed investigations into atomic nuclei and facilitate breakthroughs in spectroscopy.
Researchers propose a new method for constructing higher-order topological insulators using ring resonators and synthetic dimensions, enabling dynamic control over system parameters. This approach allows for the creation of high-dimensional topological insulators with exotic properties.
Researchers at DGIST developed a novel dual-resonant method to maximize photon conversion in 2D materials. The method achieves a significant boost in signal intensity and frequency doubling, with potential applications in advanced photonic devices and cheaper diagnostic methods.
The study confirms that the speed of light is constant in vacuum, as predicted by Einstein's general relativity theory. No energy-dependent time delay was detected in the arrival times of gamma rays from a high-energy gamma-ray burst, supporting GR. Strong constraints on the quantum gravity energy scale were also set.
Physicists at MIT have designed a quantum light squeezer that reduces quantum noise in lasers by 15% at room temperature. The system uses an optical cavity with two mirrors to engineer the light exiting the cavity, allowing for more precise measurements in quantum computing and gravitational-wave detection.
Researchers at Trinity College Dublin have developed a novel device that enables controlled single photon emission from quantum dots, a crucial component in quantum computing and communications. This breakthrough allows for entangled states of pairs of quantum dots, paving the way for significant advancements in quantum technologies.
Researchers developed an approach to wirelessly power implantable devices via a skin-worn light-emitting patch, which transfers photons to a photovoltaic device integrated with the implant. The method was successfully tested in mice, demonstrating its efficacy.
High-dimensional synthetic lattices emerge in photon-number space when excited by N indistinguishable photons, allowing for parallel quantum random walks with different numbers of steps on various graphs. This discovery enables the realization of an infinite number of lattices and graphs with distinct properties.
Researchers identified a universal concept underlying efficient biological light-harvesting by tuning 'noisy' photosynthetic antennae networks to their environments. This approach enables optimal power conversion and minimizes fluctuations in energy output.
The US Army has made significant advancements in quantum networking research, which will play a crucial role in future battlefield operations. The researchers have developed a system that can send information quantum-mechanically between nodes without occupying the linking channel.
A team of scientists at Aalto University has successfully created a Bose-Einstein condensate that behaves as if it were one particle, but makes the elusive state of matter in just 100 femtoseconds. The breakthrough could lead to new areas of fundamental research and applications with these condensates.
Scientists at Penn State have fabricated a 'photonic topological insulator' that can mediate interaction between photons and form self-sustaining wave patterns called solitons. This innovation could lead to more efficient lasers, medical imaging, and other photonic technologies.
Scientists have successfully demonstrated the unique quantum characteristic of the 'Quantum Cheshire Cat' by exchanging grins between two photons without physical contact. By applying a perturbation to the system, they were able to obtain weak values that separated each photon's polarization.
Scientists at the University of Chicago have developed a new quantum communication technique that bypasses traditional channels, allowing for secure information transfer without photon loss. This breakthrough enables faster and more efficient communication systems, opening up new possibilities for future technologies.
Researchers have developed a quantum-inspired approach for OCT detection, allowing for high-quality imaging with power levels up to 1 million times lower than current standards. This breakthrough enables safer and more efficient OCT imaging for medical applications.
Physicists at TU Darmstadt have successfully stopped individual photons and preserved them for a short time, enabling the creation of controlled interactions between light and atoms. This breakthrough could lead to breakthroughs in nonlinear optics and simulation of solid materials through photon crystals.
Physicists have created a focusing component that converts light into electromagnetic waves, compressing it to 60% of the initial wavelength. This breakthrough allows for densely packing optical components in photonic and plasmonic devices, potentially bypassing fundamental limitations of traditional lenses.
Researchers at Goethe University Frankfurt have confirmed a 90-year-old theory by measuring the recoil of ejected electrons in helium and nitrogen molecules. They observed the molecular movement when light particles hit individual molecules, confirming the effect of radiation pressure with recoil.
Researchers at UC Santa Barbara developed a new approach to design LEDs that can extract and direct photons with high efficiency. By using metasurface concepts, they were able to confine electrons and holes in gallium nitride nanorods, allowing more light to escape the semiconductor structure.
Researchers at the University of Bristol have developed a novel technique to generate high-quality single photons, paving the way for large-scale quantum photonics. The breakthrough enables the creation of scalable quantum photonics devices, which can solve complex problems beyond current supercomputers.
Researchers successfully image atomic nuclei in three materials using a new microscopy type called ANXRI, which combines aberration-corrected STEM and EDS. The accuracy of ANXRI reaches 1 pm, allowing for adjustable individual imaged sizes of atomic nuclei.
Researchers at IST Austria have demonstrated a new detection technology called microwave quantum illumination that utilizes entangled microwave photons to detect objects in noisy thermal environments. The technology has potential applications for ultra-low power biomedical imaging and security scanners.
Researchers developed a quantum photonics prototype using hyperbolic metamaterials to achieve high-efficiency single-photon sources with broad spectral bandwidth. The tilted geometry suppresses light reflections, enabling faster photon extraction and paving the way for on-chip quantum networks.
Researchers have confirmed a method for developing photonic circuits with optical nonlinearities that can function at room temperature. This approach could lead to more efficient and powerful quantum computers, bypassing the need for extremely cold temperatures.
Researchers at the University of Arizona are using quantum entanglement to detect radio frequencies with unprecedented sensitivity and accuracy. By combining RF photonics sensing and quantum metrology, they've created a technology that can improve GPS systems, astronomy labs, and biomedical imaging capabilities.
The new camera detects single photons at unprecedented speeds, enabling fast acquisition of 3D images. It can acquire images at up to 24,000 frames per second, making it suitable for applications such as virtual reality and LiDAR systems.
Scientists observed a surprising phenomenon where electrons were sometimes ejected from nuclei in two-thirds of cases, and sometimes reflected back. The findings provide a new approach for testing quantum mechanical theories of Compton scattering.
Researchers at ETH Zurich have developed a high-repetition-rate laser source producing coherent soft x-rays spanning the entire 'water window', enabling new applications in chemistry and biology. The system, capable of 100 kHz repetition rates, demonstrates a significant improvement over existing sources.
Scientists at Argonne National Laboratory develop a novel approach to ultrafast imaging of single sucrose nanoclusters using XFEL pulses, finding that shorter pulse lengths are better for optimal signal degradation. The study's computer modeling will help optimize future experiments.
Researchers at Caltech have successfully created a tiny optical cavity that can store and transmit quantum information, a crucial step towards building a quantum internet. The cavity allows scientists to efficiently collect and detect photons emitted by rare-earth ytterbium ions, enabling the creation of a quantum network.
A team of researchers has developed a new method for generating quantum-entangled photons in the previously inaccessible spectral range of 2.1 micrometers. This breakthrough can enhance the security of satellite-based communications by making end-to-end encryption possible on sunny and cloudy days.
Researchers at Institute for Basic Science (IBS) in South Korea have reported the first high-sensitivity results of their axion dark matter search. They used a custom-made CAPP-8TB haloscope to detect potential axions, finding no evidence within a specific mass range.
Harvard and MIT researchers have developed a prototype quantum node that can correct for signal loss, paving the way for a practical quantum internet. The breakthrough enables secure communication over long distances using entangled particles, making it impossible for eavesdroppers to intercept messages.
Researchers in the Keller group at ETH Zurich have measured for the first time how single photons alter an unbound electron's dynamics. They found a delay of up to 12 attoseconds between s- and d-electrons, depending on their angular momentum. This subtle signature reflects underlying quantum-mechanical effects.
Researchers use SLAC's X-ray laser to film iodine molecules reacting to two photons of light, capturing detailed snapshots of atomic vibrations and unexpected phenomena. The technique yields new insights into molecular behavior and fills a gap in previous methods.
Researchers from ITMO University have predicted a novel type of topological quantum state in two-photon systems. A new experimental method using classical electric circuits has been developed to test these predictions, offering valuable information for the engineering of optical chips and quantum computers.
Physicist Esther Wertz receives NSF CAREER award to investigate nanometer-scale metal structures controlling light at the quantum limit. Her work aims to create a single photon transistor by manipulating quantum states without destroying superposition.
A new study has found that the energy source behind mysterious ultraviolet radiation is likely star-forming galaxies, which are producing gigantic clouds of hydrogen gas that emit Lyman-alpha light. The study's findings suggest that infalling hydrogen gas originates in the intergalactic medium rather than the galaxy itself.
Researchers from the Institute for Quantum Computing at the University of Waterloo have made a groundbreaking discovery by directly splitting one photon into three. The achievement uses the spontaneous parametric down-conversion method and creates a non-Gaussian state of light, a critical ingredient for gaining a quantum advantage.
Researchers at Stevens Institute of Technology have developed a 3D imaging system that uses light's quantum properties to create images 40,000 times crisper than current technologies. The system, which employs Quantum Parametric Mode Sorting (QPMS), reduces single-photon noise by exponentially cleaning up noisy images.
Researchers at Stanford University have developed a trick to precisely control photons, the basic particles of light. This breakthrough enables the creation of light-based chips that could deliver far greater computational power than electronic chips.
The researchers create a device that uses surface acoustic waves and industry-compatible fabrication processes to transport individual electrons one by one, recombining them with holes to produce single photons.
Researchers at Nara Institute of Science and Technology developed a new reaction system that detects X-rays at the highest sensitivity ever recorded using organic molecules. The system can detect even the faintest X-ray levels considered dangerous, making it safer for workers exposed to radiation.
Physicists at Vienna University of Technology have discovered a new type of quasi-particle called the pi-ton, which consists of two electrons and two holes. The pi-ton is created by absorbing a photon and decays into another photon, exhibiting properties similar to those of particles.
Researchers at Argonne and Washington University have discovered an engineered version of a protein complex that enables the switch between two possible electron transfer pathways, opening up new opportunities for designing more efficient light-driven biochemical reactions. This breakthrough has significant implications for improving h...
Mark Beno, a senior chemist at Argonne National Laboratory, was posthumously awarded the AAAS Fellow distinction for his pioneering work on chemical crystallography. He made significant contributions to understanding high-temperature superconductors and developed beamlines at the Advanced Photon Source.
A team from Wits and HUST shows that multiple quantum patterns of twisted light can be transmitted across a conventional fibre link, enabling a new approach to realising a future quantum network. The researchers demonstrated transfer of multi-dimensional entanglement states over 250m of single-mode fibre.
Lin X. Chen, a senior chemist at Argonne National Laboratory and Northwestern University professor, has received the 2020 Award in Experimental Physical Chemistry for her fundamental contributions to elucidating excited state structures, dynamics, and energetics of light harvesting systems.