Current Photons News and Events

Current Photons News and Events, Photons News Articles.
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Controlling fully integrated nanodiamonds
Physicists at Münster University have succeeded in fully integrating nanodiamonds into nanophotonic circuits and at the same time addressing several of these nanodiamonds optically. The study creates the basis for future applications in the field of quantum sensing schemes or quantum information processors. The results have been published in the journal Nano Letters. (2020-11-23)

Analysis paves way for more sensitive quantum sensors
Theoretical researchers at Pritzker Molecular Engineering have found a way to make quantum sensors exponentially more sensitive by harnessing a unique physics phenomenon. (2020-11-16)

History of temperature changes in the Universe revealed
How hot is the Universe today? How hot was it before? A new study by an international team of researchers, including members of the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), suggests that the mean temperature of gas in large structures of the Universe has increased about 3 times in the last 8 billion years, to reach about two million Kelvin today. (2020-11-13)

Research produces intense light beams with quantum correlations
Potential applications of research conducted at the University of São Paulo include high-precision metrology and information encoding. (2020-11-12)

Cascade amplified upconversion luminescence facilitating narrow band NIR photodetection
Facing the fact that selective detection of multiple narrow spectral bands in the near-infrared (NIR) region still poses a fundamental challenge. Towards this goal, Hongwei Song's group and Liu developed selectively multispectral narrow-band near-infrared photodetection using photon upconversion nanocrystals (UCNCs) through a cascade optical field modulation strategy. They demonstrated for the first time that the response to the excitation modulation frequency of a PD can be employed to discriminate the incident light wavelength. (2020-11-11)

Invisible organic light-emitting diodes reach new world record
You can't see it with the naked eye, but a new fluorescent organic light-emitting diode (OLED) could shed light on the development of innovative applications in devices such as smartphone and television displays using near-infrared light. Created through the combined work of engineers from Polytechnique Montréal and chemists from Université de Montréal, this fluorescent OLED is 300% more efficient than existing OLEDs in its category. The research team published today details in the journal Advanced Functional Materials. (2020-11-11)

New technology allows cameras to capture colors invisible to the human eye
New research from Tel Aviv University will allow cameras to recognize colors that the human eye and even ordinary cameras are unable to perceive. The technology makes it possible to image gases and substances such as hydrogen, carbon and sodium, each of which has a unique color in the infrared spectrum, as well as biological compounds that are found in nature but are 'invisible' to the naked eye or ordinary cameras. (2020-11-05)

Building a quantum network one node at a time
University of Rochester and Cornell University researchers create 'optically active spin arrays' within a device that could serve as a node for exchanging photons with distant locations. (2020-11-04)

Devil in the defect detail of quantum emissions unravelled
Emerging quantum technologies require a means to transmit quantum information effectively requiring new ways to reliably encode, transmit and detect quantum properties on individual particles of light, or photons. An international collaboration, led by the University of Technology Sydney, investigating the chemical structure of crystal imperfections, or defects, in the nanomaterial hexagonal boron nitride (hBN) have definitively linked the defect structure to carbon impurities introduced into the hBN lattice. The discovery enables a better understanding of the properties of these quantum light sources. (2020-11-02)

Infrared light antenna powers molecular motor
Light-controlled molecular motors can be used to create functional materials, to provide autonomous motion or in systems that can respond on command, for example, to open drug-containing vesicles. For biological applications, this requires the motors to be driven by low-energy, low-intensity light that penetrates tissue. Chemists at the University of Groningen designed a rotary motor that is efficiently powered by near-infrared light, through adding an antenna to the motor molecule. (2020-10-28)

Not all cats are grey in the dark!
Using two mode-locked femtosecond lasers and a single photon counting detector, scientists have recorded broad spectra with close to one hundred thousand colors in almost complete darkness. (2020-10-23)

When Fock meets Landau: Topology in atom-photon interactions
Topological photonics concerns the classical wave simulation of electronic band topology. Does the quantum nature of light embed new topological states? By exploiting the similarity between the Jaynes-Cummings model and graphene, topological states of quantized light were found with a wealth of physics involving the valley Hall effect, the Haldane model and the Lifshitz topological transition. This research built a bridge between quantum electrodynamics and topological phases in condensed matter physics. (2020-10-14)

Penn engineers create helical topological exciton-polaritons
Researchers at the University of Pennsylvania's School of Engineering and Applied Science are the first to create an even more exotic form of the exciton-polariton, one which has a defined quantum spin that is locked to its direction of motion. Depending on the direction of their spin, these helical topological exciton-polaritons move in opposite directions along the surface of an equally specialized type of topological insulator. (2020-10-12)

INRS researchers design the world's fastest UV camera
The team of Professor Jinyang Liang, a specialist in ultrafast imaging at the Institut national de la recherche scientifique (INRS), in collaboration with an international team of researchers, has developed the fastest camera in the world capable of recording photons in the ultraviolet (UV) range in real time. This original research is featured on the front cover of the 10th issue of the journal Laser & Photonics Reviews. (2020-10-08)

An electrical trigger fires single, identical photons
Researchers at Berkeley Lab have found a way to generate single, identical photons on demand. The precisely controlled photon source, made from an atomically thin semiconducting material, could aid the development of advanced quantum communication. (2020-10-08)

Ultrasensitive microwave detector developed
A joint international research team from POSTECH of South Korea, Raytheon BBN Technologies, Harvard University, and Massachusetts Institute of Technology in the U.S., Barcelona Institute of Science and Technology in Spain, and the National Institute for Materials Science in Japan have together developed ultrasensitive sensors that can detect microwaves with the highest theoretically possible sensitivity. (2020-10-01)

The most sensitive and fastest graphene microwave bolometer
Scientists from Harvard, ICFO, MIT, Raytheon BBN Technologies and NIMS construct the fastest and most sensitive graphene-based microwave bolometer achieved so far. (2020-09-30)

Cancer's hidden vulnerabilities
To fight cancer more effectively, a Caltech researcher probes its inner workings for metabolic weaknesses. (2020-09-28)

The return of the spin echo
The spin of particles can be manipulated by a magnetic field. This principle is the basic idea behind magnetic resonance imaging as used in hospitals. A surprising effect has now been discovered in the spins of phosphorus atoms coupled to microwaves: If the atoms are excited, they can emit a series of echoes. This opens up new ways of information processing in quantum systems. (2020-09-24)

New system detects faint communications signals using the principles of quantum physics
Researchers at the National Institute of Standards and Technology (NIST) have devised and demonstrated a system that could dramatically increase the performance of communications networks while enabling record-low error rates in detecting even the faintest of signals. (2020-09-24)

Atom-Billiards with X-Rays: a new Approach to look inside of Molecules
Since these early days of quantum mechanics, it is known that photons also possess momentum. The photon's ability to transfer momentum was used in a novel approach by scientists of the Max Born Institute, Uppsala University, and the European X-Ray Free-Electron Laser Facility to observe a fundamental process in the interaction of x-rays with atoms. The detailed experimental and theoretical results are reported in the journal Science. (2020-09-24)

SwRI instruments aboard Rosetta help detect unexpected ultraviolet aurora at a comet
Data from Southwest Research Institute-led instruments aboard ESA's Rosetta spacecraft have helped reveal auroral emissions in the far ultraviolet around a comet for the first time. (2020-09-21)

Comet Chury's ultraviolet aurora
On Earth, auroras, also called northern lights, have always fascinated people. An international consortium involving the University of Bern has now discovered such auroras in the ultraviolet wavelength range at comet 67P/Churyumov-Gerasimenko, Chury for short. This phenomenon was detected thanks to the analysis of data from the European Space Agency ESA's Rosetta mission. (2020-09-21)

Mirror-like photovoltaics get more electricity out of heat
New heat-harnessing 'solar' cells that reflect 99% of the energy they can't convert to electricity could help bring down the price of storing renewable energy as heat, as well as harvesting waste heat from exhaust pipes and chimneys. (2020-09-21)

Skoltech research puts exciton-polaritons in their place with new artificial laser-built lattices
Researchers at the Hybrid Photonics Laboratories in Skoltech and Southampton (UK), in collaboration with Lancaster University (UK), have demonstrated a new optical method to synthesize artificial solid-state crystal structures for cavity-polaritons using only laser light. The results could lead to realization of field-programmable polariton circuitry and new strategies to create guided light and robust confinement of coherent light sources. (2020-09-16)

Physicists make electrical nanolasers even smaller
Researchers cleared the obstacle that had prevented the creation of electrically driven nanolasers for integrated circuits. The approach enables coherent light source design on the scale not only hundreds of times smaller than the thickness of a human hair but even smaller than the wavelength of light emitted by the laser. This lays the foundation for ultrafast optical data transfer in the manycore microprocessors expected to emerge in the near future. (2020-09-16)

Single photons from a silicon chip
Quantum technology holds great promise: Quantum computers are expected to revolutionize database searches, AI systems, and computational simulations. Today already, quantum cryptography can guarantee secure data transfer, albeit with limitations. The greatest possible compatibility with current silicon-based electronics will be a key advantage. And that is precisely where physicists at HZDR and TU Dresden have made progress: The team has designed a silicon-based light source to generate single photons that propagate well in glass fibers. (2020-09-15)

Physicists "trick" photons into behaving like electrons using a "synthetic" magnetic field
Scientists have discovered an elegant way of manipulating light using a ''synthetic'' Lorentz force -- which in nature is responsible for many fascinating phenomena including the Aurora Borealis. (2020-09-14)

A phonon laser - coherent vibrations from a self-breathing resonator
Lasing - the emission of a collimated light beam of light with a well-defined wavelength (color) and phase - results from a self-organization process, in which a collection of emission centers synchronizes itself to produce identical light particles (photons). A similar self-organized synchronization phenomenon can also lead to the generation of coherent vibrations - a phonon laser, where phonon denotes, in analogy to photons, the quantum particles of sound. (2020-09-11)

Seeing objects through clouds and fog
Using a new algorithm, Stanford researchers have reconstructed the movements of individual particles of light to see through clouds, fog and other obstructions. (2020-09-09)

Paving the way for tunable graphene plasmonic THz amplifiers
Tohoku University Professor Taiichi Otsuji has led a team of international researchers in successfully demonstrating a room-temperature coherent amplification of terahertz (THz) radiation in graphene, electrically driven by a dry cell battery. (2020-09-07)

Photonics researchers report breakthrough in miniaturizing light-based chips
Electrical engineers at the University of Rochester have created the smallest electro-optical modulator yet, using a thin film of lithium niobate bonded on a silicon dioxide layer. This key component of a photonics-based chip controls how light moves through its circuits and has broad applications in data communication, microwave photonics, and quantum photonics. (2020-08-27)

Army scientists take new spin on quantum research
Army researchers discovered a way to further enhance quantum systems to provide Soldiers with more reliable and secure capabilities on the battlefield. (2020-08-26)

Trapping and controlling light at the interface of atomically thin nanomaterials
In a recent study, scientists at Cornell University propose a novel method by which nanoscale light can be manipulated and transported. (2020-08-20)

Stanford scientists slow and steer light with resonant nanoantennas
Researchers have fashioned ultrathin silicon nanoantennas that trap and redirect light, for applications in quantum computing, LIDAR and even the detection of viruses. (2020-08-20)

Quest for quantum Internet gets a boost with new technique for making entanglement
Traditional ways of producing entanglements, necessary for the development of any 'quantum internet' linking quantum computers, are not very well suited for fiber optic telecoms networks used by today's non-quantum internet. However, researchers have come up with a new way to produce such particles that is much more compatible. (2020-08-19)

Low-dose real-time X-ray imaging with nontoxic double perovskite scintillators
X-ray imaging is widely used in probing the inside information non-destructively. Towards this goal, Scientist in China realized high-resolution X-ray image with the lowest X-ray dose to date, and demonstrated the first real-time X-ray imaging based on nontoxic Cs2Ag0.6Na0.4In0.85Bi0.15Cl6 double perovskite scintillator. This research unfolds huge potentials to explore scintillators beyond lead halide perovskites and lay the foundation for the development of low-dose, high-quality, high-stability X-ray imaging technology. (2020-08-18)

Scientists use photons as threads to weave novel forms of matter
New research from the University of Southampton has successful discovered a way to bind two negatively charged electron-like particles which could create opportunities to form novel materials for use in new technological developments. (2020-08-17)

Quantum chip fabrication paves way for scalable processors
An Army-funded project marks a turning point in the field of scalable quantum processors, producing the largest quantum chip of its type using diamond-based qubits and quantum photonics. (2020-07-30)

'Giant atoms' enable quantum processing and communication in one
MIT researchers have introduced a quantum computing architecture that can perform low-error quantum computations while also rapidly sharing quantum information between processors. The work represents a key advance toward a complete quantum computing platform. (2020-07-29)

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