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UrduElectronics and Telecommunications Research Institute (ETRI) announced that they have developed a system capable of controlling eight photons using a photonic integrated-circuit chip. With this system, they can explore various quantum phenomena, such as multipartite entanglement resulting from the interaction of the photons.
Tag: Photons
Ultracompact polarization-entangled photon sources for miniaturized quantum devices
Scientists created a new ultra-thin source of entangled photons, a key component for future quantum technologies. This new source uses a special material called rhombohedral tungsten disulfide, which offers high quality and efficiency. It could pave the way for miniaturized devices in quantum information processing.
Breakthrough in quantum light source heralds ultra-secure communication
Scientists developed a new light source that creates super-bright entangled photons. These photons are crucial for ultra-secure communication in quantum networks. The source combines two technologies to achieve high brightness and entanglement, overcoming the limitations of previous methods. This paves the way for more efficient and secure quantum communication.
New method cracked for high-capacity, secure quantum communication
Scientists are developing a method for transmitting quantum information over long distances using particles of light called qudits. These special qudits encode information in a way that makes them resistant to errors and allows for faster data transfer. The technique uses two properties of light – spatial mode and polarization – to create four-dimensional qudits that can be manipulated with high precision. This paves the way for a robust and powerful quantum internet.
Optimized agrivoltaic tracking for nearly-full commodity crop and energy production
Abstract As the global population accelerates toward a full earth scenario, food, energy, and water demands will increase dramatically. The first order constraints that face resource generation technologies, such as static land availability, compound into second order challenges such as…
New discoveries about the nature of light could improve methods for heating fusion plasma
Scientists have made discoveries about light particles known as photons that could aid the quest for fusion energy.
Unveiling a New Quantum Frontier: Frequency-Domain Entanglement
Entanglement has paved the way for enriching our understanding of physics and implementing quantum information technology. Scientists at POSTECH introduce a new type of entanglement: Frequency-domain photon number-path entanglement. Utilizing a frequency beam splitter converting single-photon frequency with a 50% probability, they observe a two-fold enhanced resolution of interference pattern compared to the single-photon counterpart, with unprecedented stability.
Compact quantum light processing
An international collaboration of researchers, led by Philip Walther at University of Vienna, have achieved a significant breakthrough in quantum technology, with the successful demonstration of quantum interference among several single photons using a novel resource-efficient platform.
MRL MVPs: Chris Anderson
Chris Anderson is the newest addition to the Materials Research Laboratory (MRL) faculty, and he is ready to make a quantum leap into the world of materials science.
Dark SRF experiment at Fermilab demonstrates ultra-sensitivity for dark photon searches
Scientists working on the Dark SRF experiment at the U.S. Department of Energy’s Fermi National Accelerator Laboratory have demonstrated unprecedented sensitivity in an experimental setup used to search for theorized particles called dark photons.
New Type of Entanglement Lets Scientists ‘See’ Inside Nuclei
Nuclear physicists have found a new way to see inside nuclei by tracking interactions between particles of light and gluons. The method relies on harnessing a new type of quantum interference between two dissimilar particles. Tracking how these entangled particles emerge from the interactions lets scientists map out the arrangement of gluons. This approach is unusual for making use of entanglement between dissimilar particles—something rare in quantum studies.
Displays with more brilliant colors through a fundamental physical concept
A research team from the University of Cologne (Germany) and the University of St Andrews (Scotland) has shown in a new study how a fundamental physical concept can be used to boost the colour brilliance of smartphone, computer or TV screens without cutbacks in energy efficiency.
Hitting Nuclei with Light May Create Fluid Primordial Matter
A new analysis supports the idea that photons colliding with heavy ions create a fluid of “strongly interacting” particles. The results indicate that photon-heavy ion collisions can create a strongly interacting fluid that responds to the initial collision geometry and that these collisions can form a quark-gluon plasma. These findings will help guide future experiments at the planned Electron-Ion Collider.
When the light is neither “on” nor “off” in the nanoworld
Whether the light in our living spaces is on or off can be regulated in everyday life simply by reaching for the light switch. However, when the space for the light is shrunk to a few nanometers, quantum mechanical effects dominate, and it is unclear whether there is light in it or not.
Researchers reveal microscopic quantum correlations of ultracold molecules
Physicists are increasingly using ultracold molecules to study quantum states of matter.
LiDAR technology could improve safety features in vehicles
As of 2022, 17 car manufacturers have announced plans to use or are currently using LiDAR sensors across 21 different models.
Entangled photons to take pictures in the dark
During photosynthesis, a chemical reaction jumpstarted by sunlight breaks down chemicals into the food plants need to repair themselves and to grow. But as researchers attempt to better understand photosynthesis, they have hit a roadblock when it comes to being able to see the fundamental structures and processes in a plant.
New measurements quantifying qudits provide glimpse of quantum future
Using existing experimental and computational resources, a multi-institutional team has developed an effective method for measuring high-dimensional qudits encoded in quantum frequency combs, which are a type of photon source, on a single optical chip.
Through the quantum looking glass
An ultrathin invention could make future computing, sensing and encryption technologies remarkably smaller and more powerful by helping scientists control a strange but useful phenomenon of quantum mechanics, according to new research recently published in the journal Science.
‘Beam Me Up:’ Nation’s First Quantum Drone Provides Unrivaled Security
Researchers are developing the nation’s first drone-based, mobile quantum network for unhackable wireless communication. The network includes drones, a ground station, lasers and fiber optics. In war, these drones would provide one-time crypto-keys to exchange critical information, which spies and enemies would not be able to intercept. Quantum protects information using the laws of nature and not just by a clever manmade code.
New class of versatile, high-performance quantum dots primed for medical imaging, quantum computing
A new class of quantum dots deliver a stable stream of single, spectrally tunable infrared photons under ambient conditions and at room temperature, unlike other single photon emitters.
Columbia Engineers First to Observe Avalanches in Nanoparticles
Columbia Engineering researchers report the first nanomaterial that demonstrates “photon avalanching,” a process that is unrivaled in its combination of extreme nonlinear optical behavior and efficiency. The realization of photon avalanching in nanoparticle form opens up a host of sought-after applications, from real-time super-resolution optical microscopy, precise temperature and environmental sensing, and infrared light detection, to optical analog-to-digital conversion and quantum sensing.
Shine On: Avalanching Nanoparticles Break Barriers to Imaging Cells in Real Time
A team of researchers co-led by Berkeley Lab and Columbia University has developed a new material called avalanching nanoparticles that, when used as a microscopic probe, offers a simpler approach to taking high-resolution, real-time snapshots of a cell’s inner workings at the nanoscale.
Berkeley Team Plays Key Role in Analysis of Particle Interactions That Produce Matter From Light
Researchers at Berkeley Lab played a key role in an analysis of data from the world’s largest particle collider that found proof of rare, high-energy particle interactions in which matter was produced from light.
Strainoptronics: A New Way to Control Photons
SUMMARYResearchers discovered a new way to engineer optoelectronic devices by stretching a two-dimensional material on top of a silicon photonic platform. Using this method, coined strainoptronics by a team led by George Washington University professor Volker Sorger, the researchers demonstrated…
‘Molecular Distancing’ Presents Pathway to Remote Chemical Reactions
The study introduces a generic way of engineering artificial forces between photons and molecules to enable new energy transfer pathways between molecules.
Broadband Enhancement Relies on Precise Tilt
If a photon source could be placed on a single chip and made to produce photons at a high rate, this could enable high-speed quantum communication or information processing. In Applied Physics Reviews, a simple on-chip photon source using a hyperbolic metamaterial is proposed, and investigators carried out calculations to show that a prototype arranged in a precise way can overcome problems of low efficiency and allow for high repetition rates for on-chip photon sources.
Quantum experiments explore power of light for communications, computing
A team of quantum researchers from ORNL have conducted a series of experiments to gain a better understanding of quantum mechanics and pursue advances in quantum networking and quantum computing, which could lead to practical applications in cybersecurity and other areas.