Articles tagged with Photons
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.
Researchers successfully demonstrated the transport of an entangled state between an atom and a photon via an optic fiber over a distance of up to 20 km. This achievement sets a new record for quantum communication and confirms that quantum information can be distributed on a large scale with little loss.
Researchers from ORNL and Purdue University successfully design a quantum frequency beam splitter using standard lightwave communications technology, enabling controlled photon interactions. The team also demonstrates a coincidence-basis controlled-NOT gate and completes the first demonstration of a frequency tritter.
Scientists have developed a new method to record extremely fast processes using X-ray lasers. By harnessing the random nature of these pulses, they can now create images with precisely controlled parameters. This breakthrough enables the study of non-linear effects and chemical reactions.
Researchers at Princeton University have successfully established a long-distance relationship between two silicon quantum bits, paving the way for more complex calculations and potentially cheaper quantum computers. The breakthrough uses light-based communication to transmit messages between qubits on a computer chip.
The NIST study suggests a new definition for the optical watt based on radiation force and speed, offering a more precise, less expensive and more portable method for measuring light power. The proposed approach also simplifies calculations of mass and force, making it simpler as a primary standard.
Researchers at NIST have developed methods to measure the efficiency of five single-photon detectors, which are used in various applications such as optical communications and astrophysics. The study provides a tool for verifying future detection standards and aims to improve accuracy and reliability in these devices.
Physicists at NIST have achieved a major new feat by creating a bizarre quantum interference between two photons of markedly different colors, originating from different buildings. This experiment is an important step towards future quantum communications and computing.
Scientists at ICFO have created a new microscopy technique that allows them to study the dynamics of individual quantum dots without degrading the samples or relying on fluorescent labels. By using laser pulses to promote QDs into excited states, they can image and track the evolution of charged particles within the nanoscale.
Researchers improved a computer program to simulate photon behavior in intergalactic space. They found that particles flying to Earth are deflected by magnetic fields or interact with hydrogen plasma, preventing them from reaching their destination.
Scientists have found a way to pair silicon with organic molecules to transfer energy between them, improving efficiency in converting light into electricity. This breakthrough has implications for information storage, solar energy conversion and medical imaging applications.
Researchers at the Institute for Basic Science discovered a carrier multiplication process in 2D semiconductors that could improve the efficiency of solar cells. The phenomenon is more efficient in 2D materials than in bulk semiconductors and has the potential to increase the maximum power conversion efficiency up to 46%
Researchers created a compact device to interface with electronic architecture of traditional computers using light-encoded information. The device uses surface plasmon polariton to confine light into nanoscopic dimensions, overcoming the incompatibility between electrical and optical computing.
Researchers have developed ternary organic solar cells with non-fullerene electron acceptors or polymer donors, improving spectral response and photon-harvesting capabilities. The addition of these third components enhances energy and charge transfer, leading to increased efficiency and potentially semi-transparent solar cells.
The MAGIC telescopes detected the first-ever TeV photons from a gamma-ray burst, providing critical new insights into the physical processes at work in these cosmic events. The discovery sheds light on the mysteries surrounding gamma-ray bursts and their energetic emissions.
An international team of researchers has identified a previously unseen component of gamma-ray bursts, emitting trillions of times more energetic photons than visible light. The discovery supports the possibility that inverse Compton emission is commonly produced in gamma-ray bursts.
Researchers at NIST have created a high-resolution camera with over 1,000 sensors to detect chemical signs of life on other planets and dark matter. The camera's success is crucial for future space-based telescopes and NASA's Origins Space Telescope project.
Scientists have found a way to harness excess energy from photons that are too energetic for materials to absorb, potentially increasing the efficiency of solar panels. By combining a perovskite with an acceptor material, hot electrons can be readily absorbed, even without slowing down their loss of energy.
Researchers have successfully created a new one-way street for light by cooling photons to a Bose-Einstein condensate. This process causes the light to collect in optical valleys from which it can no longer return, effectively irreversibly dividing the light beam. The findings could be of interest for future quantum communication.
Researchers create two-dimensional system to trap photons, which behave like massive quasiparticles with a magnetic moment. This discovery could lead to new optoelectronic devices and unique quantum states of matter.
Using patterns of light, scientists aim to build a faster and more secure quantum network. The research could lead to higher information capacity and stronger security in quantum protocols.
Researchers use structured light to create a larger encoding alphabet, stronger security and better resistance to noise. The use of patterns of light enables higher information capacity and improved robustness against noise.
A UC Riverside-led research team has discovered a new quantum process in valleytronics that can speed up the development of this emerging technology. The breakthrough, which uses local energy minima in semiconductors, enables the creation of information processing schemes superior to current charge-based technologies.
Scientists have created a new method to isolate quantum images from classical illumination, enabling ultra-sensitive microscopy and potential applications in quantum communications. By leveraging image distillation, they can retrieve 'quantum illuminated' images even with high classical illumination.
Researchers have successfully created an efficient quantum-mechanical light-matter interface using a microscopic cavity, enabling interactions between individual photons and artificial atoms. The experiment demonstrates the potential for new quantum technological applications in photonics and quantum information processing.
Researchers have developed a method to synthesize and trap trions that remain stable at room temperature, enabling manipulation and study of their fundamental properties. The work has implications for technologies such as bioimaging, chemical sensing, energy harvesting, solid-state computing and quantum computing.
Scientists at UNIGE have entangled three pairs of photons to create a highly-correlated triangle, exhibiting strong quantum correlations. This discovery could lead to the development of new ultra-secure encryption keys and revive fundamental quantum physics research.
Scientists at TU Wien discover that atomic defects and mechanical strain interact to produce single photons, enabling experiments in quantum information and cryptography. This phenomenon was previously unknown and has opened up new possibilities for materials science.
Researchers at Argonne National Laboratory have discovered a key property of donut-like nanoparticles called semiconductor quantum rings, which may find application in quantum information storage, communication, and computing. The team achieved coherent directional control over light emission by breaking the symmetry of the ring shape.
The researchers developed a microfluidic platform to study an artificial light-harvesting complex inspired by photosynthetic bacteria. They found that at low light intensities, the system absorbs photons efficiently, while high intensities trigger the release of excess energy as a safety valve.
Researchers create and observe a single phonon in diamond at room temperature, bringing quantum behavior closer to everyday life. This breakthrough technique can now be used to probe other materials for quantum vibrations, potentially leading to advancements in solar cells and quantum computing.
University of Illinois researchers Kwiat and Kaneda have built a single-photon source that produces 30 photons at unprecedented efficiencies. By using time multiplexing, they reduced the loss rate to 1.2 percent per cycle, guaranteeing at least one photon pair production per run.
Researchers at Goethe University use new super COLTRIMS apparatus to measure minuscule effect on photon momentum. They find electrons receive unexpected additional momentum from magnetic fields, altering tunneling in strong-field ionization.
Researchers at TU Wien have developed a new measurement protocol that enables direct measurement of the quantum phase of electrons. This breakthrough could lead to better understanding of important phenomena in photosensors and photovoltaics.
A team of LSU researchers has successfully demonstrated a method to generate groups of photons with manipulable quantum properties, known as multiphoton states. By subtracting out some photons, they can reshape the form of the wavepacket and artificially increase the number of photons in it.
A new NASA visualization reveals how a black hole distorts space, creating a warped view of its surroundings like a carnival mirror. The extreme gravity bends light from the accretion disk, producing a misshapen appearance.
A research group converts absorbed photons into twice as many excitons with an organic monolayer on a gold nanocluster surface, achieving high-efficiency energy conversion. The researchers also found that the newly formed excitons have a significantly longer lifetime compared to conventional surfaces.
Researchers at the University of Illinois created a unique quantum-mechanical state, a three-photon color-entangled W state, which retains entanglement even with one photon lost. This state enables novel quantum applications and tests fundamental physics.
Researchers at Stevens Institute of Technology have developed a nano-scale chip that facilitates photon interactions with much higher efficiency than any previous system. The breakthrough could enable the creation of powerful quantum computing components such as photonics logic gates and entanglement sources.
Scientists are developing a highly sensitive detector capable of sensing single photons, which could be crucial for finding Earth-like planets around other stars. The detector leverages Quanta Image Sensor technology and has several advantages, including the ability to operate at room temperature and resistance to radiation.
Researchers from the University of Pennsylvania have developed a reconfigurable topological insulator that can route photons around defects, increasing efficiency and speed. This breakthrough has potential applications in high-capacity data routing for future communication networks.
Argonne scientists develop a new approach to couple magnetization to superconductivity, paving the way for quantum information systems. This breakthrough enables precise manipulation of quantum information through the creation of an 'echo chamber' for energy and quantum information.
Researchers have directly observed the non-Abelian Aharonov-Bohm Effect, a predicted exotic phenomenon involving optical waves and synthetic magnetic fields. The finding may offer a step toward fault-tolerant quantum computers.
Researchers at the University of Innsbruck have successfully transferred quantum entanglement between matter and light over 50 kilometers using fiber optic cables. This achievement paves the way for building inter-city quantum networks, which could enable secure communication and distributed sensor networks.
Quantum dots have been successfully modified to produce interference-free photons, paving the way for quantum communication. Researchers eliminated interferences by adding an aluminium arsenide layer grown above the quantum dots in the wetting layer.
Researchers have demonstrated a loophole-free Bell test with the measurement settings determined by remote cosmic photons, verifying the completeness of quantum mechanics with high-confidence probability. The experiment closed loopholes that had long confounded tests of quantum mechanics, providing new evidence of quantum interactions.
The HADES experiment simulates electromagnetic radiation from colliding neutron stars, revealing temperatures of 800 billion degrees Celsius. The research provides insight into the cosmic kitchen for heavy nuclei fusion.
Researchers at Purdue University have successfully created a quantum spin wave for light that only flows in one direction. This breakthrough has significant implications for future nanotechnologies, enabling information to be transmitted securely and efficiently.
Researchers at Columbia University have developed a new design rule for generating excitons in organic molecules. This innovation enables the creation of more efficient solar cells and opens up new avenues for applications in fields such as photocatalysis, sensors, and imaging.
Researchers successfully recorded sequences of up to 1,000 sharp images of live mitochondria at 1.5 frames per second using STED microscopy. By exploiting the probabilistic nature of photobleaching, scientists can distinguish between different regions of the cell and achieve unprecedented resolution.