Articles tagged with Photons
A team of scientists from Berkeley Lab and the University of Illinois created a solar cell that absorbs high-energy light at a 30-fold higher concentration than conventional cells. This breakthrough uses quantum dot light-emitters with spectrally matched photonic mirrors to efficiently utilize the high-energy part of the solar spectrum.
Researchers successfully demonstrated squeezing of individual light particles, or photons, using an artificially constructed atom. The experiment achieved this by shining a faint laser beam on to their artificial atom, which excited the quantum dot and led to the emission of a stream of individual photons.
Researchers used an enormous X-ray laser to induce a phenomenon that doesn't occur under normal circumstances, resulting in a single higher-energetic X-ray photon. The findings may lead to new ways to diagnose matter in the future.
Researchers have developed an optical chip that can process photons in an infinite number of ways, a major step forward in creating a quantum computer. This breakthrough brings together existing quantum experiments and paves the way for new protocols, making it easier to conduct research and discover new science.
Berkeley Lab researchers have generated and detected plasmons with one of the strongest confinement factors ever, confining photon energy to a spatial dimension smaller than its wavelength. This breakthrough enables novel plasmonic devices with extraordinary sub-wavelength confinement.
Scientists have developed a new type of photonic channel that allows them to control the direction of photon emission, enabling the creation of complex quantum circuits. This breakthrough discovery has significant implications for building large-scale quantum computers and could lead to major advancements in chemistry and materials tec...
A team of chemists at UC Riverside has found a way to use the infrared region of the sun's spectrum to generate more power in solar cells. By combining inorganic semiconductor nanocrystals with organic molecules, they have created a hybrid material that can 'upconvert' photons, effectively reshaping the solar spectrum to boost efficien...
The University of Delaware research team aims to improve solar cells and medical imaging by changing the color of low-energy light into higher-energy colors. Their novel approach could lead to a significant boost in solar energy harvesting, with predicted efficiencies of up to 30%.
University of Pennsylvania engineers have discovered a silicon-based photonic device sensitive to photon spin, enabling faster and more efficient computing. This breakthrough could lead to the development of photonic computers that exploit the spin of photons, potentially orders of magnitude faster than current technology.
Scientists are searching for exotic mesons that don't fit traditional patterns, which could reveal new insights into QCD. The JLab team uses the Titan Supercomputer to analyze interactions between quarks and gluons in a vacuum, aiming to predict these hypothetical particles from first principles.
Scientists have identified a way to manipulate nuclei using electrons' magnetic moments, enabling the transfer of quantum information between particles. The discovery could lead to more stable systems for quantum computing.
Researchers at UCLA have developed a new way to harness light particles, enabling photons to be entangled in multiple dimensions. This allows for the transmission of denser packets of information through fiber optic networks, with potential applications in finance, healthcare, and military communications.
Researchers at Argonne National Laboratory develop a new way of manipulating high-intensity X-rays using a small microelectromechanical system (MEMS) mirror. The device acts as an ultrafast mirror reflecting X-rays at precise times and specific angles, allowing for the selection of extremely brief but precise X-ray bursts.
Researchers will present novel optical systems for detecting exoplanets and measuring the Sun's internal structure. A device called a laser frequency comb will also detect minute changes in light from the sun, enabling the detection of Earth-like planets around distant stars.
Astrophysicists developed a method to calculate Rayleigh scattering's effect on the cosmic microwave background, potentially improving our understanding of the Universe's birth. This calculation may help researchers better comprehend the formation of our 13.6 billion-year-old Universe.
A new protocol reduces resources and effort required to teleport quantum information, improving reliability with 88% transmission fidelity. The method uses hyperentangled photons and a torus shape to encode and transmit information efficiently.
A team of MIT physicists has developed a laser-based technique to trap and freeze fermions in place, allowing for the simultaneous imaging of over 95% of potassium gas fermions. This breakthrough enhances our understanding of fermion behavior, particularly that of electrons.
Researchers at the University of Rochester have created optically active quantum dots in a 2D semiconductor, which could enable nanophotonics applications and integrated photonics. The defects on the atomically thin semiconductor emit single photons with correlated color and spin.
Using synchotron X-rays, scientists visualize the dynamics of explosions within a bombardier beetle's body, discovering a self-repairing valve that saves energy. This breakthrough could provide new design principles for technologies related to blast mitigation and propulsion.
Scientists from Brown University have successfully linked chlorophyll fluorescence to plant photosynthesis in a deciduous forest, validating orbital measurements of fluorescence with ground-based observations. The study provides crucial ground-truth for measuring photosynthesis on a global scale from low-Earth orbit.
Scientists at NPL have developed a new optical method for directly measuring sound pressure, providing direct traceability to fundamental SI base units. This method can be used to calibrate any acoustic device without assumptions regarding geometry and sound field characteristics.
Physicists at University of Warsaw successfully image indistinguishable photons forming pairs through Hong-Ou-Mandel interference. The achievement enables direct observation of spatial optical phenomena involving single photons, a crucial result for quantum optics.
NASA engineers test the ATLAS instrument's thermal performance in a vacuum chamber, simulating extreme temperatures and conditions. The successful test ensures that the laser altimeter system functions as expected, measuring the height of Earth's surface below.
Engineers at the University of Toronto have developed the first all-photonic quantum repeaters, enabling reliable and secure data transmission over long distances. The repeaters use highly entangled quantum states to reduce losses and function at room temperature.
A team of researchers used various techniques to study niobium diselenide, a material that exhibits short-range charge density wave order and pseudogap behavior across large temperature ranges. They found that increasing temperature or doping leads to the loss of coherent electronic excitations and the emergence of an energy gap.
Researchers from the University of Bonn and Cambridge successfully linked two different quantum systems, quantum dots and ions, to work together as a team. This hybrid system combines the strengths of both components, enabling faster calculations and improved memory storage.
Researchers at MIT have developed a technique to entangle 3,000 atoms using a single photon, promising improved accuracy in atomic clocks. This breakthrough could lead to more precise timekeeping and potentially overcome the standard quantum limit.
The study observes the convergence of classical and quantum behavior in photons, revealing a 'point of transition' where quantum nature 'collapses' to conform to classical rules. The researchers also detect bi-photons at an unprecedented high rate using a fiber-based nonlinear process.
Researchers at Perimeter Institute and IQC have discovered a new class of quantum advantages that allow for cause-effect correlation determination without intervention. This breakthrough has significance for both quantum information and quantum foundations, underpinning the promise of quantum technologies.
Scientists at the University of Rochester have developed a method for encoding 2.05 bits per photon using twisted light, doubling existing systems that use light polarization. This breakthrough could help increase the efficiency of quantum cryptography systems and secure communication.
Researchers at MIT demonstrate that quantum sensors can outperform classical systems even when entanglement breaks down due to environmental influences. The study shows that correlations between entangled beams remain strong enough to improve signal-to-noise ratio, leading to increased sensitivity.
Yale University scientists create a new system that combines photons and phonons to conduct sophisticated signal processing tasks, allowing for faster and more efficient information control. The technology has the potential to be less expensive and adaptable to various complex designs.
The team constructed tiny mirrors to trap light around impurity atoms in diamond crystals, increasing the efficiency of photon transmission. They demonstrated a spin-coherence time of over 200 microseconds, essential for quantum computing systems and long-range cryptographic networks.
Researchers have developed a microscopic component that generates continuous entangled photons, enabling faster computing and secure communication. The new design is based on silicon technology and is incredibly small and efficient.
Physicists at the University of Innsbruck have improved an interface for a quantum internet by harnessing superradiant states, which enhance the creation of single photons. This breakthrough enables faster information transfer and more robust storage, paving the way for future quantum computing applications.
Researchers have built an array of light detectors sensitive enough to register individual photons and mounted them on a silicon optical chip. The approach increases detector density and sensitivity, yielding results up to 20 percent, which is a significant step toward practical quantum computing.
Physicists at Griffith University demonstrate the potential for quantum steering to be used to enhance data security over long distances. This technique allows for perfectly secure communication between two parties without requiring absolute trust in devices, making it suitable for scenarios where standard methods fail.
Four pulses of laser light on nanoparticle photocells reveal how captured sunlight can be converted into electricity. The study, published in Nature Communications, uses a novel approach to understand multiple exciton generation in nanomaterials.
Scientists at Eindhoven University of Technology have successfully controlled the shape of light particles, a crucial step towards establishing a 'quantum internet'. This breakthrough enables faster and more efficient quantum communication, paving the way for the development of powerful quantum computers.
Researchers have developed a new method for authenticating physical keys using quantum mechanics, making it impossible to spoof or copy. This 'Quantum-Secure Authentication' uses the unique properties of light to create a secure question-and-answer exchange.
A team of researchers at the University of California, San Diego, has developed a silicon chip that can emit and control quantum light at room temperature. The device uses Spontaneous Optical Nonlinear Mixing to generate entangled photon pairs, which can be tuned over a wide range of Schmidt numbers for specific quantum optic properties.
A breakthrough in atomic memory technology allows for reliable quantum information storage and transmission over long distances. The device can store light with multiple spatial modes, enabling higher capacity and paving the way for widespread adoption of quantum communications.
Researchers discovered a plant protein, KEA3, crucial for adjusting photosynthetic efficiency in fluctuating light conditions. This mechanism enables plants to quickly respond to changes in light intensity and maintain high energy capture.
The ICESat-2 satellite will measure the elevation of Earth from space to track changes in ice-covered poles, forests and ocean surfaces. The Advanced Topographic Laser Altimeter System (ATLAS) instrument will time how long light travels from the satellite's lasers to Earth's surface.
Scientists at Vienna University of Technology have successfully created a strong interaction between two single photons using an ultra-thin glass fiber. This technique enables the creation of maximally entangled photon states required in quantum teleportation and light-transistors for quantum computing.
The POLARBEAR experiment uses microwave detectors to measure B-mode polarization, allowing researchers to map the large-scale structure of the universe. The team also aims to determine neutrino masses and study dark matter and dark energy.
A study published in Practical Radiation Oncology evaluated the use of image-guided radiation therapy (IGRT) in treating pediatric cancers. The results show that IGRT is commonly used to improve localization and precision in radiation delivery, particularly for tumors near sensitive structures or organs.
Duke University researchers have developed a way to increase the photon emission rate of fluorescent molecules, reaching record levels. This breakthrough has significant implications for ultrafast LEDs and quantum cryptography, enabling secure communication that could not be hacked.
Scientists at the Joint Quantum Institute use thermal light and cheap detectors to achieve sub-wavelength imaging, overcoming classical optical limitations. They observe an interference pattern with fringes as narrow as 30 nm, pushing the boundaries of extreme quantum coherence.
Researchers at the University of Granada have developed a new imaging system using Transverse Field Detectors (TFD) that can extract full color information from each pixel without filters. This technology has numerous potential applications in various fields, including medical imaging, remote sensing, and assisted driving.
Researchers develop new approach to generate mixed-up photon pairs on a chip, exploiting micro-ring resonator technology. The device can directly generate orthogonal polarized photons at very low power, suitable for quantum protocols.
Researchers develop new single-photon detection strategies with high accuracy enhancements, enabling precise timing resolution and fast reset times. New technologies improve space missions and quantum optics, advancing the field of single-photon devices.
University of Minnesota researchers have created a nanoscale device capable of capturing and transporting fundamental particles of light called photons. The discovery could lead to the development of faster and more energy-efficient optical devices.
Researchers at Université de Genève have successfully teleported the quantum state of a photon to a crystal over 25 kilometers of optical fibre, surpassing their previous record of 6 kilometers. This experiment demonstrates that quantum state can exist independently of material composition.
Researchers at NIST and the University of Waterloo directly entangled three photons, a breakthrough in quantum information systems. The use of superfast single-photon detectors enabled stable and high-quality results, paving the way for applications in quantum computing and quantum communications.
Physicists successfully transmit a flash of light in a sensitive quantum state through the atmosphere, enabling secure quantum communication. The technology has potential advantages over current methods, including ability to transmit in sunlight and higher transmission rates.
The researchers create a structure containing 100 billion atoms that act as a single artificial atom, linking it to a superconducting wire with photons. This leads to strong interactions among the photons, mimicking phases of matter studied in condensed matter physics.
Researchers at UC San Diego built the first 500 GHz photon switch, enabling ultrafast optical control and opening a new class of sensitive receivers. The team developed a measurement technique to resolve sub-nanometer fluctuations in the fiber core, critical for fast switching and processing.
Researchers at the University of Copenhagen's Niels Bohr Institute have successfully created a steady stream of photons emitted one at a time, enabling control over their direction. The breakthrough has significant implications for future quantum technologies, including encryption and complex calculations.
Researchers develop new quantum imaging technique that captures images without detecting light used to illuminate the object, using entangled photon pairs. This breakthrough enables imaging in low-light conditions and has potential applications in biological and medical imaging.