Articles tagged with Photons
Researchers at Tohoku University successfully generated unpolarized single photons from diamond with intrinsic randomness. This breakthrough is expected to revolutionize quantum information technology, including quantum computing and cryptography.
Researchers developed a laser phosphor display that can absorb ambient light, generating power while displaying high-resolution images. The system achieves up to 71% energy harvesting, but face challenges with ghost images and design optimization.
IBS scientists developed a theoretical model for valv polarization in microcavities, which predicts that valleys with opposite polarization can be distinguished and tuned. This could lead to applications in valleytronics by selectively exciting different valleys with polarized laser light.
A team from Japan successfully generated indistinguishable photons using a novel single-photon source, nitrogen impurity centers in III-V compound semiconductors. The photons' high degree of indistinguishability is essential for quantum information technology such as quantum teleportation and linear optical quantum computation.
Researchers at UC Davis and W&WSens Devices, Inc. developed a new type of photodetector that uses tapered holes to divert photons sideways, preserving the speed of thin-layer silicon and efficiency of thicker layers. The device can convert data from optical to electronics at 20 gigabytes per second, outperforming existing technology.
Researchers at the University of East Anglia discovered a new mechanism for creating paired light particles, which could have significant implications for quantum physics. The findings suggest that photon pairs can be emitted from spatially separated points, introducing positional uncertainty of fundamental quantum origin.
Physicists use a new measurement technique to observe Alice winning and losing a quantum race simultaneously, verifying superposition. This breakthrough opens up new areas for study in quantum mechanics, including the role of causal relations.
Scientists at IBS have proposed a hypothetical portal connecting two possible dark sector particles: dark photons and axions. This discovery could lead to reinterpretation of previous data and potentially breakthroughs in axion and dark photon searches.
Ryan Scott, BS '16, has won the AAPT-ALPhA Award for his work on a new quantum mechanics experiment. The experiment demonstrates superposition and entanglement, fundamental effects in quantum computing research.
A seven-year experiment has confirmed that two photons are indeed exchanged during electron-proton interactions, contradicting theoretical predictions. The OLYMPUS study, led by MIT researchers, used polarized electron beams to measure the intensity of scattered electrons at different angles.
A team of physicists at the University of Warsaw has created a multidimensional entangled state of a single photon and a trillion rubidium atoms. By storing the photons in the laboratory for several microseconds, they have demonstrated the joint entanglement, resolving the long-standing paradox of Einstein-Podolsky-Rosen.
Physicists at Lomonosov Moscow State University have created a new technique for generating entangled photon states, exhibiting correlated pairs that can be used in quantum cryptography. The technique uses spatial entanglement creation and has shown improved efficiency compared to previous methods.
Physicists from the University of Warsaw develop a new device that generates large groups of single photons on demand, overcoming a fundamental obstacle towards quantum computing. The device uses a spatially multimode memory and can store and process hundreds of photons in microseconds.
Physicists have demonstrated quantum entanglement using ancient photons from stars, closing the freedom-of-choice loophole and supporting the concept of 'spooky action at a distance'. The experiment uses highly entangled pairs of photons produced on the roof of a laboratory in Vienna, shot towards detectors several city blocks away.
The Quark Matter 2017 conference showcases new results on ultrarelativistic heavy-ion collisions, revealing the behavior of quarks and gluons in a primordial soup. Scientists explore the structure of nuclear matter, detecting correlations in particle characteristics to understand the dynamic behavior of quarks and gluons.
Researchers at the University of Ottawa have developed a high-dimensional quantum cloning machine that can intercept secure quantum messages. By analyzing the results, they discovered clues to protect quantum computing networks from potential hacking threats.
Researchers at IST Austria have observed a quantum phase transition in a dissipative quantum system for the first time. The study verifies theoretical predictions and demonstrates potential applications in memory storage elements and quantum simulation processors.
Scientists have successfully created a photonic chip that can emit directional photons, paving the way for complex quantum networks. This breakthrough enables full control over photons and has significant implications for quantum communication and information processing.
Scientists have found that toroidal magnets can be used to detect axions, one of the dark matter particle candidates. The CAPPuccino submarine, a type of toroidal magnet, has been designed to amplify the energy of photons generated from the axion-photon interaction.
Scientists at the University of the Witwatersrand have made a groundbreaking discovery that allows for real-time error correction in quantum communications. By utilizing classical entangled light, they can establish secure quantum links over long distances, paving the way for major advances in data transfer and encryption.
Physicists at NIST have cooled a mechanical object to a temperature lower than previously thought possible, below the so-called
Astronomers have discovered giant halos of scattered photons around early Milky Way type galaxies, indicating that only a small percentage of light emitted by distant stars can escape these galaxies. The study uses the Isaac Newton Telescope to survey almost 1000 distant galaxies and measures the amount and location of Lyman-alpha phot...
Researchers at Singapore University of Technology and Design have developed a compact optical amplifier that can amplify light by 17,000 times, strengthening the integrity of transmitted data. The device's efficiency enables new opportunities in low-cost broadband spectroscopy, precision manufacturing, and hyperspectral imaging.
The Journal of the Optical Society of America B published a special feature on nonlinear optics near the fundamental limit, covering second-order and third-order nonlinear interactions. Researchers studied molecular conjugation length for optimal performance in donor-acceptor molecules.
Scientists have successfully built a device that allows a single electron to communicate with a photon, paving the way for more efficient quantum computing. This breakthrough enables quantum information to be transferred between electrons and photons, reducing noise and increasing performance.
A new type of light-enhancing optical cavity has been developed, representing a step toward brighter single-photon sources. This breakthrough could help propel quantum-based encryption and secure networks.
Cryptophyte algae have been found to harness light energy at an unprecedented rate, thanks to the ability of molecular vibrations to enhance photon absorption. This discovery has potential applications in developing more efficient light-harvesting technologies, such as sensors and communication systems.
A team at Tohoku University found that when a cluster of neon atoms is exposed to intense extreme ultraviolet light, it initiates a cascading process that produces many low-energy electrons. This mechanism could have implications for future radiation therapy.
Scientists mapped the probability of Rubidium atoms absorbing photons with rising and decaying shapes. The results show a significant increase in excitation at moments when the photon arrives dimly and ends brightly, indicating that photon shape plays a crucial role in light-matter interactions.
Physicists have created a technique to improve the production of single photons, which can be used for quantum computing and secure communication. The new method uses fibre-optics and optical switches to control photon properties.
A Polish-British team has developed a compact and efficient converter that modifies individual photons' properties, enabling the construction of complex quantum computers. The device achieves high conversion efficiency and preserves quantum superposition.
Researchers at the University of Vienna have made significant breakthroughs in transmitting twisted light over long distances, exceeding 100 kilometers. They also demonstrated record-breaking quantum entanglement with 5-digit quantum numbers using a novel technique developed in Australia.
Scientists at TU Wien develop new approach to controlling electron emission using two laser pulses fired at a metal tip. They demonstrate the ability to switch electron emission on and off on extremely short time scales. This breakthrough opens up possibilities for controlled x-ray generation.
Researchers have developed novel light sources using 2-D materials, which can be used to transfer information securely. The light sources emit photons in pairs, making them ideal for quantum communication. Additionally, the novel lasers exhibit self-sustaining properties, opening up new possibilities for studying quantum effects.
Researchers used a novel quantum Monte Carlo technique to study the Rabi model's accuracy at the quantum scale. They found dramatic consequences for strongly coupled light-atom systems, emphasizing the need to account for non-conserved excitations.
Scientists at MIPT have found that treating photodetectors with UV light can turn them into high-bandwidth devices, making them suitable for a wide range of applications. The process is quick, cheap, and efficient, and the acquired properties remain unchanged after manufacturing.
Researchers at Hong Kong University of Science and Technology have developed a method to produce subnatural-linewidth biphotons from a Doppler-broadened hot atomic vapor cell. This breakthrough simplifies the production process and enables the creation of narrowband biphotons for practical quantum applications.
Researchers at Brookhaven National Laboratory have found that static charge stripes coexist with superconductivity in a cuprate material. This discovery suggests that the electrons forming the static stripes may separate from the free-moving electron pairs required for superconductivity.
Researchers at University of Waterloo's IQC recorded interaction 10 times larger than previously seen between photons and qubit, enabling investigation of light-matter interactions in a new domain. The ultrastrong coupling may lead to exploration of new physics related to biological processes, exotic materials, and relativistic physics.
Researchers have successfully cooled rubidium atoms to nearly absolute zero using a multicolored laser, paving the way for studying chemical reactions in medicine and biology. The technique involves using pairs of photons to mimic high-energy ultraviolet light, overcoming previous difficulties in generating such photons.
Scientists at OIST Graduate University have developed a technique to visualize electrons in a material, allowing them to study the dynamic of electron movement and its effects on semiconductor devices. By creating a video of electron motion, researchers can now describe the phenomenon without interpreting data.
Scientists have discovered a qualitatively new state of a superconducting artificial atom dressed with virtual photons, resolving a forty-year-old problem in atomic physics. The discovery provides a platform to investigate light-matter interaction at a fundamental level and may contribute to the development of quantum technologies.
A team of researchers found a way for neutron stars to avoid the 'traffic jam' that limits their brightness, enabling them to become hundreds of times brighter than expected. This discovery challenges current understanding and provides new insights into the nature of these mysterious objects.
The researchers created a device called a quantum enigma machine that can transmit an unbreakable encrypted message using a key significantly shorter than the message, advancing the field of quantum data locking. The team successfully demonstrated six bits of classical information being securely locked in with only one bit of encryptio...
Scientists have discovered that even in the complete absence of light, there are fluctuations in quantum vacuum that can be converted into photons with different frequencies. This breakthrough could lead to new ways of performing logical gate operations for quantum computing.
Researchers at Boston College have developed a nanoscale wireless communication system that operates at visible wavelengths using surface plasmons with unprecedented control. The device achieves in-plane configuration and enables high-speed communication, potentially speeding up transmission by up to 60%.
UCI researchers found evidence that supports a light particle as the key to understanding dark matter in the universe. The study suggests the existence of a protophobic X boson, a force-carrying particle with extremely limited range.
Karlsruhe researchers created a new piggyback structure for metal-organic frameworks that enables photon upconversion, transforming low-energy photons into high-energy photons. This process has potential applications in solar cells and LEDs, increasing efficiency and reducing limitations.
The NSF has awarded $12 million to develop systems that use photons in pre-determined quantum states for encrypting data. Researchers will engineer a quantum communication system on a chip, which could operate at room temperature with low energy.
Researchers have created highly efficient electrically-driven single-photon sources in diamond, promising breakthroughs in quantum computers and secure communication lines. The discovery enables operation at room temperature, increasing energy efficiency by over a thousand times and laying the foundations for novel quantum devices.
A NASA team is testing a photon sieve optic for improved UV resolution, which could help answer a 50-year-old question about the sun's corona. The new technology has already achieved success in its initial testing phase.
A new platform called spectroscopic photon localization microscopy (SPLM) increases the resolution of molecular imaging by fourfold, making it faster and simpler. This breakthrough can be applied to various fields like materials science and life sciences to study nanoscale environments.
Researchers successfully applied concepts of classical holography to the world of quantum phenomena, registering the first ever hologram of a single light particle. The technique enables registration of quantum interference in which wave functions of photons interact.
Researchers have successfully created a controlled beam of ultra-energized photons, or gamma rays, from a laser using simulations on the Lonestar and Stampede supercomputers. The breakthrough has potential applications in fields such as cancer treatment, cargo screening, and fundamental science studies.
Researchers achieved a 14-fold increase in energy resolution of thermal photodetection, opening doors for ultrasensitive cameras and quantum computing applications. The detector works at extremely low temperatures, detecting single zeptojoule energy packets.
Researchers from Lomonosov Moscow State University demonstrated the effect of all-optical switching between streams of photons using non-linear metamaterials, which can manipulate photons in a new way. This breakthrough could lead to faster data transfer and high-speed communication technologies.
Scientists at Washington University in St. Louis have developed a method to control the direction of light emission in microlasers using an exceptional point. By exploiting this physical phenomenon, they can create consistently directed photons, which is crucial for reliable photonic signals and applications.
Researchers at NIST measured the energy spectrum of photons released during neutron beta decay, providing a precise check on the Standard Model and shedding light on QED's predictions. The results are being used to further develop the theory and potentially uncover new physics beyond the Standard Model.
Swiss researchers improve an interferometry technique to directly exploit fringe interference, acquiring high-resolution images without the need for a G2 grating or small pixel detectors. The new setup increases flux efficiency by a factor of two and reduces overall production costs.
Researchers from Singapore and UK test a compact device in space that creates and measures pairs of light particles, a precursor to entangled photons. The technology aims to connect powerful quantum computers globally, enabling secure keys for secret messaging.