Articles tagged with Photons
Researchers observed a dramatic reduction in the time taken to emit the first x-ray as the number of x-rays increased, in good agreement with Dicke's prediction. This behavior is consistent with the concept of superradiance, where a group of atoms emit light at a faster rate than a single atom.
Researchers at University of Warsaw develop high-capacity quantum memory, storing up to 665 quantum states of light, using spatial multiplexing and magneto-optical trap. The system is resilient to decoherence, enabling complex manipulations of atomic states.
Engineers at Duke University have successfully counted the presence of at least four photons at a time using a widely used method of detecting single photons, providing easier paths to developing quantum-based technologies. The discovery will unlock new capabilities in physics labs working in quantum information science around the world.
Researchers from the University of Würzburg have developed a new set of rules for creating optical antennas that can precisely control photon creation and emission direction. This breakthrough has the potential to enable tiny, multifunctional light pixels and reliable single-photon sources for quantum computers and optical microscopes.
Researchers developed a QKD system that achieves high secret key rates using time-bin encoding, resolving major challenges for practical applications. This breakthrough enables ultra-high rate quantum secure communication, paving the way for image and video encryption and large encrypted databases.
A Northwestern University team creates quantum entanglement from a biological system using green fluorescent proteins. This finding advances scientists' understanding of biology and opens doors to exploit quantum mechanics for new applications.
Scientists developed a novel material platform for TTA photon upconversion using cheaper, less toxic, and thermally stable DESs. This achievement boosts the conversion of low-energy photons into high-energy photons, increasing solar energy utilization efficiency.
By forcing light to go through a smaller gap, researchers have increased its intensity and allowed photons to interact more strongly over a short distance. This technology brings optical processing closer to electrical transistors, potentially solving the problem of nonlinear optics and enabling faster, more efficient computers.
A team of researchers has successfully recreated Hofstadter's butterfly using quantum simulators, enabling the simulation of exotic electronic conduction properties. This breakthrough could lead to the development of new materials with unique properties.
A team of researchers has demonstrated a simple approach for coupling solution-synthesized cesium lead tribromide (CsPbBr3) perovskite nanocrystals to silicon nitride photonic cavities, enhancing room temperature light emission by an order of magnitude.
Researchers have developed a high-speed quantum encryption system that can transmit encryption codes five to 10 times faster than existing methods, potentially securing the future of the internet. The system uses photons of light and advanced detectors to encode and decode keys, making it secure from common attacks even with imperfect ...
Researchers at MIT have invented a new technique to cool atoms into condensates using laser cooling, conserving 70% of the original cloud. The method enables faster investigations into magnetism and superconductivity.
ICFO researchers have successfully connected two distinct quantum nodes using a single photon, demonstrating the feasibility of hybrid quantum networks. This breakthrough enables secure data transmission and advanced computing capabilities.
Researchers at Lomonosov Moscow State University have developed a new time-resolved spectroscopy method that analyzes quantized light transmitted through samples without femtosecond lasers. This design allows for cheaper analysis and preserves the sample, enabling studies of interactions and processes in substances.
Researchers at IST Austria have developed micrometer-scale, nonmagnetic devices that route microwave photons and shield qubits from harmful noise. The compact devices are a significant improvement over traditional predecessors and could revolutionize the development of quantum computers.
Researchers mixed electromagnetic waves on a superconducting qubit, enabling the detection of quantum wave mixing. The study could aid in developing new quantum electronics.
Researchers develop a NbN-SNSPD with system detection efficiency over 90% at 2.1 K, enabling practical applications in quantum information technologies and optical quantum computing/simulation. The device exhibits timing jitters down to 79 ps, promising advantages in high-precision applications.
The latest analysis of BaBar experiment's data limits hiding places for dark photon, ruling out its explanation for muon spin discrepancy and supporting the existence of dark matter. Researchers refine search for dark photons using decade-old particle collider data.
Researchers at the National University of Singapore have developed a super-resolution imaging technique that doubles the odds of successful photon interaction with atoms. This innovation has significant implications for quantum computing and metrology, as it enables stronger interactions between photons and atoms.
Researchers from National University of Singapore invented a novel converter that can harness the speed and small size of plasmons for high frequency data processing and transmission. The converter has an efficiency of over 10% and can potentially make microprocessor chips work 1,000 times faster.
Researchers produced high-energy photon beams using a new method, exceeding known limits and paving the way for deeper understanding of atomic nuclei. The discovery has potential applications in future large-scale laser facilities and could lead to new sources of energy.
Researchers at UNIGE have successfully demonstrated the entanglement of 16 million atoms in a crystal crossed by a single photon, confirming the theory behind future quantum networks. This breakthrough confirms that a vast number of atoms can be entangled and intertwined by a strong quantum relationship.
Researchers found that super-powerful quantum computers must be even more powerful than previously thought to outperform ordinary PCs. The team simulated boson sampling for 20-50 photons on laptops and servers, pushing the boundary of what is possible.
Xi-Cheng Zhang and his team have successfully generated terahertz waves from liquid water, a fundamental breakthrough with significant applications in imaging and spectroscopy. The discovery paves the way for non-destructive inspection of objects and potential uses in security screening, medical imaging, and more.
The Cherenkov Telescope Array's (CTA) updated science case outlines the observatory's major science themes and potential discoveries in astrophysics and fundamental physics. CTA will explore extreme environments, probe cosmic voids, and search for dark matter, with the potential for unexpected breakthroughs.
Researchers demonstrate a nanoscale technique that uses semiconductor quantum dots to bend photons to the wavelengths used by today's popular C-band standards. This breakthrough enables entangled photons to impact cryptography and secure satellite communications.
A new experiment demonstrates that photons' nature is pre-existing, as described by wavefunctions. This finding clarifies the role of wavefunctions in quantum entities' evolution, confirming physical reality and nonlocality of wavefunctions.
Scientists have successfully teleported patterns of light over a virtual link using entanglement swapping, paving the way for high-bit-rate secure long-distance quantum communication. This breakthrough uses orbital angular momentum to transmit information without physical photon travel.
Researchers have developed a measurement-device-independent QKD system using readily available hardware, enabling provably secure communication. The system can generate secret keys at high rates and spans distances of over 100km.
A US-based research team has demonstrated optical and electrical bistability for switching in a single transistor, offering potential solutions to the bandwidth limitations of electronic computers. The study showcases the control of transistor laser electrical and optical bistabilities by base current and collector voltage.
Researchers at MIPT and the University of Siegen have developed high-speed single-photon sources using diamond diodes, enabling efficient quantum communication and computing devices. The new design mechanism allows for precise photon emission times, crucial for applications such as quantum cryptography and quantum computing.
Chinese researchers have successfully sent encrypted messages using quantum-entangled photons over a distance of over 700 miles, breaking the previous record. The achievement is significant as it paves the way for practical quantum communication systems.
A team of Caltech engineers has developed the world's smallest optical quantum memory chip, capable of storing information in individual photons. The device stores data more efficiently and securely than traditional computer memory, with 97% accuracy rate.
Researchers at University of Basel successfully used mirrors to boost NV centers' photon yield by 50% and emission rate by 100%. This breakthrough paves the way for future applications in quantum information technology.
Physicists from University of Basel create a simple and fast quantum memory that stores photons, enabling ultra-fast data transfer and potentially leading to unconditionally secure communication and super-fast quantum computers. The technology has low noise levels and can be implemented in compact setups.
Researchers recreated complex cosmic simulations to investigate a possible transformation process where photons become axions and retransform into photons upon interacting with magnetic fields. This phenomenon may explain the observed brightness of distant celestial bodies.
Researchers have uncovered a reason why semiconductors lose their ability to carry electricity as they become more densely doped. They found that transient bonding of dopant ions with the semiconductor base material impeds conduction, but now know how to design smarter systems to minimize this effect.
Scientists demonstrated 4D quantum encryption over a free-space optical network, encoding two bits of information per photon and tolerating more signal-obscuring noise. The breakthrough paves the way for practical quantum encryption over free-space networks, enabling secure communication between ground-based networks and satellites.
A team of UChicago scientists have detected X-ray photons from a type Ia supernova for the first time, indicating dense circumstellar material. The finding challenges current understanding of these explosions and raises questions about their formation.
Priyashree Roy has been awarded the 2016 Jefferson Science Associates Thesis Prize for her experimental research on proton excited states. Her thesis work produced new information useful to researchers, including 10 previously measured polarization observables.
Physicists from FAU and DESY have developed a method to improve X-ray image quality, enabling the visualization of individual atoms in molecules at higher resolutions. The new technique uses incoherent radiation and time-resolved snapshots to overcome limitations of conventional coherent imaging methods.
A team of researchers has observed nonreciprocal magnons in a noncentrosymmetric antiferromagnet for the first time, showcasing a new regime of magnetic materials. This phenomenon has significant implications for magnon-based electronics, such as spin-wave field-effect transistors.
Researchers have produced single-photon emitters at room temperature using carbon nanotubes, enabling optically-based quantum information processing. The emitters can be tuned to telecommunications wavelengths, making them suitable for ultrasensitive sensing, metrology, and imaging applications.
Researchers at Oak Ridge National Laboratory have developed a method to produce controlled, deterministic photons that can be used in novel cryptographic technologies. This innovation aims to improve the speed and security of quantum key encryption when sharing information over machine-to-machine networks.
Researchers at IMS have shown theoretically and experimentally that high-energy electrons in circular/spiral motion radiate vortex photons across a broad wavelength range. This discovery indicates that vortex photons are ubiquitous in the universe, paving the way for a new research field.
A Rice University professor has developed a method to upconvert light, making solar cells more efficient and disease-targeting nanoparticles more effective. The technique uses plasmonic metals and semiconducting quantum wells to boost the frequency of light, changing its color.
Researchers at FAU have developed a detailed model of the singlet fission process, which could lead to a 50% increase in solar cell performance. By analyzing intermediate phases, they identified key steps in the process and provided new insights into molecule design.
Aalto University researchers demonstrate that each photon is accompanied by an atomic mass density wave, transferring 92% of the total momentum of light in silicon. This resolves the long-standing momentum paradox of light, which had two different values due to neglecting atomic motion with the light pulse.
Researchers at INRS have created a breakthrough photonic system that takes advantage of the frequency domain properties of photons. The system uses on-chip devices and off-the-shelf telecommunications components to generate color-entangled quDits, which can be used for high-dimensional quantum manipulation and transmission.
Physicists have observed changes in a vision-enabling interaction between light and matter by focusing laser light to unprecedented brightness. The team discovered unique X-ray pulses with potential for medical, engineering, scientific, and security applications.
The NAWI Graz researchers have developed a method to measure plasmon fields in three dimensions, enabling the focus of light at the nanoscale. This breakthrough could lead to new applications in sensor technology, photovoltaics, and computer storage.
Researchers at Stanford University have developed a way to retrofit OCT machines with off-the-shelf components, increasing resolution by several-fold. This improvement enables physicians to perform virtual biopsies and detect retinal and corneal damage, incipient tumors, and more with enhanced accuracy.
Researchers at Washington University in St. Louis have discovered that quasimeasurements, a new type of measurement interaction, cause the quantum Zeno effect and anti-Zeno effect. The disturbance from these measurements shifts the energy levels of the atom, leading to faster or slower decay rates.
Researchers achieved orders of magnitude higher link efficiency compared to traditional methods using telecommunication fibers. Distributed entangled photons enable secure quantum key distribution and variant quantum teleportation protocols.
Researchers used a satellite-based system to transmit entangled photons across vast distances, overcoming previous transmission limitations of 100 km. The successful transmission holds implications for quantum teleportation and communication networks.
Scientists demonstrate novel protocol using crystals to emit and store quantum light for extended distances, paving the way for a future quantum repeater. This breakthrough enables secure communication over longer ranges by harnessing the properties of quantum superposition.
Scientists have observed a surprising order in the surface of water droplets at the nanoscale, with molecules behaving like those in ice. This discovery could lead to a better understanding of atmospheric, biological, and geological processes, as researchers explore how additives like salt affect the water network.
The CAST project has set strict limits on the probability that axions turn into photons, with no evidence of solar axions detected. This result has direct consequences for understanding astrophysical anomalies such as high energetic gamma rays and stellar heat dissipation.
Scientists have successfully created large-scale arrays of quantum light emitters in transition metal dichalcogenides (TMDs), a breakthrough that could enable the integration of ultra-thin single photons in electronic devices. This new method allows for deterministic and robust generation of quantum sources, opening up opportunities fo...
Researchers from the National University of Singapore have discovered novel properties of strontium niobate, a material that displays both metallic type conduction and photocatalytic activity. The material exhibits an intrinsic plasmonic absorption, allowing it to absorb visible photons, which is exceptional among metals.