Articles tagged with Photonics
Researchers at USTC successfully generated cryogenic integrated quantum entangled light sources using spontaneous four-wave mixing effect, enabling scalable quantum information applications. The study also explored noise mitigation and frequency-multiplexed energy-time entangled states.
Researchers have developed a custom OCT setup that incorporates a vertical cavity surface emitting laser (VCSEL) diode, which could increase access to OCT imaging and help catch eye problems early. The system performed well in imaging the eye of a healthy volunteer and showed potential for use in biometric eye scanner systems.
Researchers at the University of Tsukuba created a liquid droplet-based laser that remains stable under ambient conditions and can be tuned using gas convection. The development enables the creation of flexible optical communication devices with potential applications in airflow detectors and fiber-optics communications.
Researchers have developed a new method for designing metasurfaces using photonic Dirac waveguides, enabling the creation of binary spin-like structures of light. This advances the field of meta-optics and opens opportunities for integrated quantum photonics and data storage systems.
A new technique developed by researchers at the University of Warsaw's Faculty of Physics allows for up to a 200-fold change in pulse duration with an efficiency of 25 percent. This enables quantum Internet links to operate up to 50 times faster, contributing to the development of superfast quantum connections.
Researchers at the University of Washington have developed a multifunctional interface between photonic integrated circuits and free space, allowing for simultaneous manipulation of multiple light beams. The device operates with high accuracy and reliability, enabling applications in quantum computing, sensing, imaging, energy, and more.
A new source-device-independent quantum random number generator (QRNG) protocol has been developed, operating securely and independently of source devices. This allows for practical applications in secure quantum information tasks, with a reported generation rate of 4 megabits per second.
A sustainable, insoluble, and chiral photonic cellulose nanocrystal patch enables calcium ion (Ca2+) sensing in sweat. The researchers developed a simple method to fabricate CNC-based hydrogels, which exhibit freeze resistance, strong adhesion, good biocompatibility, and high sensitivity to Ca2+.
Researchers have developed a quantum lidar system that uses single-photon detection to acquire high-resolution 3D images underwater. The technology has the potential to inspect underwater installations, monitor submerged archaeology sites, and enhance security applications.
A new technique called image-free single-pixel object detection (SPOD) can detect the location, size, and category of multiple objects without acquiring images. SPOD uses a small optimized structured light pattern to quickly scan the scene and extract features, achieving an accuracy of over 80%.
Researchers have developed photonic neural networks that can achieve precision comparable to conventional neural networks but with considerable energy savings. The devices use a programmable grid of silicon interferometers to perform calculations in under 0.1 nanoseconds, paving the way for faster and more efficient AI applications.
Researchers at the University of Pennsylvania School of Engineering and Applied Science have created a photonic device that provides programmable on-chip information processing without lithography. This breakthrough enables superior accuracy and flexibility for AI applications, overcoming limitations of traditional electronic systems.
Researchers demonstrate probabilistic computing's capabilities by simulating networks of stochastic nanodevices to solve specific NP problems. The simulations agree with theoretical solutions, indicating the potential for scaling up this approach.
A team from Nanjing University and Sun Yat-Sen University developed a two-facing Janus OPO scheme for generating high-efficiency, high-purity broadband LG modes with tunable topological charge. The output LG mode has a tunable wavelength between 1.5 μm and 1.6 μm, with a conversion efficiency above 15 percent.
Researchers from HKUST and CityU developed a metasurface to generate time-varying OAM beams with a time-dependent phase profile. This allows for a higher-order twist in the envelope wavefront structure, increasing capacity for applications such as dynamic particle trapping and information encryption.
Researchers developed a new thermoelectric generator that can generate electricity using heat from the sun and radiative element, providing reliable power source for outdoor sensors and wearable electronics. The device works continuously during day or night and in cloudy conditions, addressing constraints of traditional power sources.
A team of scientists has proposed a new structure based on silicon photonic grating arrays to generate Bessel Gaussian beams with long propagation distances, measured up to 10.24m. The compact device enables widespread applications in optical communication and micro-manipulation.
Researchers at Leibniz University Hannover have developed an entangled quantum light source fully integrated on a chip, overcoming challenges of size, stability and reproducibility. The new development enables scalability for real-world applications like quantum processors.
Researchers at Max Planck Institute discover that exciting electrons with strong light leads to exotic quantum effects, enabling new functions on demand. The team made an unforeseen discovery: Floquet bands form after a single optical cycle, paving the way for ultrafast electronics and tailored quantum functions.
Researchers at DTU found that conventional materials like silicon cannot prevent backscattering in photonic systems, despite attempts to create topological waveguides. The study suggests that new materials breaking time-reversal symmetry are needed to achieve protection against backscattering.
Scientists have developed BiBurst mode, which groups femtosecond laser pulses in MHz envelopes to increase ablation speed and improve throughput. The technique achieves 23 times faster ablation of silicon without compromising quality.
Researchers have developed a new way to create dynamic ultrahigh-density 3D holographic projections, overcoming two long-existing bottlenecks in current digital holographic techniques. The new method enables realistic representations of the world around us for use in virtual reality and other applications.
Researchers have developed a new way to produce and shape large, high-quality mirrors that can be rolled up during launch and then precisely reshaped after deployment. The resulting mirrors are flexible enough to be used in space telescopes, enabling larger and more sensitive telescopes to be placed in orbit.
A research team created bioplastic diffraction gratings from chitosan extracted from crab shells, enabling the production of portable and disposable spectrometers. The biodegradable gratings could improve sustainability in optical manufacturing and reduce seafood waste.
Researchers developed a novel design for the chip using a crossbar layout, outperforming state-of-the-art photonic counterparts in terms of scalability and technical versatility. The synergy of powerful photonics with the novel crossbar architecture enables next generation neuromorphic computing engines.
The new technology enables compact, low-power, fast, and energy-efficient devices for fibre-optical communications, sensors, and future quantum computers. This breakthrough could lead to advancements in applications such as 3D imaging for autonomous vehicles and photonic-assisted computing.
Researchers at the University of Sydney and the University of Basel have demonstrated the ability to manipulate and identify small numbers of interacting photons with high correlation. This achievement represents a significant step towards advancing medical imaging and quantum computing technologies.
A research team at City University of Hong Kong invented a tunable terahertz meta-device that can control the radiation direction and coverage area of THz beams. The device allows for signal delivery to specific users or detectors and has flexibility to adjust the propagating direction, as needed.
Researchers developed a self-driven lab, AlphaFlow, that uses AI to optimize complex chemical reactions and discover new materials. The system significantly reduces the time needed to develop new chemistries from months to hours.
Researchers developed a novel 3D printed nano optical security label with 33 possible combinations, utilizing higher dimensional structured light and incoherent white light illumination. This technology has the potential to revolutionize anti-counterfeiting methods and provide a powerful platform for advanced information security.
Researchers developed temporal compressive super-resolution microscopy (TCSRM) to overcome optical diffraction's spatial resolution restriction. TCSRM achieves high-speed imaging at 1200 frames per second with a spatial resolution of 100 nanometers, enabling observation of fast dynamics in fine structures.
The SF State team has created a broadband nanoscale photodetector using bismuth-MoS2 materials, showing improved sensitivity in the UV range and responsiveness over a wide wavelength range. The device is also fast, working at around 10 kilohertz and potentially scalable to megahertz or gigahertz speeds.
Researchers at the Universities of Jena and Central Florida have created a photon gas that exhibits behavior similar to a conventional gas, with particles moving at different speeds but maintaining a mean velocity defined by temperature. This phenomenon, known as negative temperature, can be cooled or heated, allowing for the creation ...
Scientists studied F1-ATPase function in bacteria to clarify the angle of rotation during ATP hydrolysis. The study revealed three sets of short and long dwells associated with different intervals per revolution, resolving a long-term debate over the ATP-cleavage shaft angle.
Researchers at Korea Advanced Institute of Science and Technology used optical traps to throw chilled rubidium atoms over a distance of 4.2 micrometers, achieving 94% success rate. The technology could enable dynamic quantum computing and study single-atom collisions.
Researchers at the University of Southampton have demonstrated that a beam of light can be confined to an area 50 times smaller than its own wavelength and even move it at the point of confinement. This breakthrough could lead to advanced manipulation techniques for nanoparticles, biological particles, and microscopic sensors.
Researchers from City University of Hong Kong developed a unified colour system based on prime numbers, called C<sub>235</sub>, which can represent various colours more efficiently than existing systems like RGB and CMYK. The new colour system has potential applications in designing energy-saving LCD systems and colourizing DNA codons.
Researchers at USTC created high-quality perovskite single crystals using a new method, achieving luminance of 86,000 cd m−2 and stability of up to 12,500 hours.
Researchers at HZDR demonstrate the creation of controlled single-photon emitters in silicon, enabling mass production of photonic qubits for quantum computing. The breakthrough paves the way for industrial-scale photonic quantum processor production.
Researchers developed a wireless communication system that enables quantum computers to send and receive data using high-speed terahertz waves, reducing power consumption and error-causing heat. The system uses a transceiver chip and tiny mirrors to transmit data wirelessly, making it suitable for large-scale quantum systems.
Scientists develop two-beam ultrafast laser scribing technology to fabricate ultrafine graphene patterns with sub-diffraction feature size. The technique overcomes the diffraction limit barrier, allowing for precise control over patterned structures.
Researchers from Nanjing University have proposed the first scheme to practically generate N-photon states deterministically using a lithium-niobate-on-insulator platform. The scheme involves deterministic parametric down-conversion and demonstrates feasibility for generating multiphoton qubit states.
Researchers at Aston University have discovered a new approach to process LDF light signals, allowing for more precise measurement of blood flow in specific areas of the vascular bed. This innovation has shown significant improvement in diagnostic accuracy for detecting microvascular changes in patients with type 2 diabetes and age-spe...
Researchers developed high-throughput Raman microscope for rapid large-area imaging hundreds of times faster than traditional approach. The new technique enables label-free molecular analysis and multiplex chemical imaging, holding promise for efficient medical diagnoses and drug development.
A team of researchers developed a model-free approach using deep reinforcement learning to optimize estimation of multiple parameters in quantum sensors. The protocol achieved significantly better estimations compared to nonadaptive strategies, demonstrating enhanced performance in resource-limited regimes.
Scientists develop eigenmodes of structured light that remain undistorted even in turbulent channels, enabling robust transmission through noisy media. This breakthrough paves the way for future work in quantum light communication and imaging through complex systems.
A team of researchers developed an efficient strategy to recycle lead from discarded car batteries, creating a new market for recycled lead in high-tech equipment. The resulting photodetectors show excellent stability and fast response speeds, with potential applications in optical communication, chemical analysis, and imaging.
Researchers have developed a compact silicon photonic compute engine capable of computing tiled matrix multiplications at a record-high 50 GHz clock frequency. This achievement promises to contribute significantly to data center cybersecurity and enables real-time threat detection for malicious packets.
The new optical resonator developed by Capasso's team provides precise control over the mode of light and enables multi-mode coupled light to exist within the resonator. This breakthrough could influence how resonators are understood and open doors for new capabilities, including fundamental physics experiments and manipulation of mate...
Researchers have developed a new detector that can precisely measure single photons at very high rates, enabling practical high-speed quantum communication. The PEACOQ detector is made of superconducting nanowires and operates at extremely cold temperatures, allowing for precise measurement of photon arrival times.
University of Central Florida researchers observed de Broglie-Mackinnon wave packets, a long-standing theoretical concept, by exploiting a loophole in 1980's-era laser physics theorem. The team's use of space-time wave packets, which resist stretching in dispersive media, verifies predicted properties and opens the path to studying top...
Researchers have developed a mechanically flexible silver mesh that shields electromagnetic interference in the X band while allowing high-quality infrared wireless optical communication. The mesh, made of transparent polyethylene substrate with a grid structure, enables efficient shielding and visible transparency.
Lithium niobate (LN) is being developed to harness its exceptional properties for diverse future applications. LN photonic chips can transform industries beyond optical fibre communications by detecting signals in the infrared part of the spectrum.
A team of global experts has developed a new navigation system for lunar rovers using lithium niobate chips, which can detect tiny changes in laser light to measure movement without external signals. This technology also has potential applications on Earth, such as remotely detecting the ripeness of fruit.
Scientists at Rice University, Stanford University, and UT Austin have developed a mechanism to generate solvated electrons through plasmon resonance, making it easier to turn light into these clean, zero-byproduct chemicals. This breakthrough could lead to new ways of driving chemical reactions and reducing greenhouse gas emissions.
Researchers at TU Wien have created a new, simpler method for producing intense, high-energy X-ray pulses using ytterbium lasers and a gas medium. This technique increases the efficiency of X-ray radiation production, allowing for better monitoring of chemical reactions in real-time and more efficient nanostructure production.
A European consortium has successfully guided lightning using a high-power laser installed at the top of Mount Säntis in Switzerland, increasing the radius of protection from 120m to 180m. The Laser Lightning Rod (LLR) works even in poor weather conditions, such as fog.
Researchers at EPFL have developed a new thin-film circuit that produces finely tailorable terahertz-frequency waves, enabling precise control over frequency, wavelength, amplitude, and phase. This breakthrough has significant implications for future electronics, telecommunications, spectroscopy, and quantum applications.
A new optical coating system combines antifogging and antireflective properties, enhancing the performance of lidar systems and cameras. The technology, developed by Fraunhofer Institute for Applied Optics and Precision Engineering, has been tested in laboratory tests and has shown promising results.
A new ultrafast camera developed by INRS scientists can stream real-time video at 100 frames per second (fps) and up to 12,000 fps offline. The device has broad applications in photonics, biophotonics, combustion analysis, and detection of hazardous gases.