The spectral degeneracies emerging as a consequence of parity-time (PT) symmetry exhibit a profound divergence from their conventional counterparts. They possess non-Hermitian nature and are designated as exceptional points (EPs), marking instances where the real and corresponding imaginary portions of specific eigenvalues align perfectly, alongside a coalescence of their associated eigenvectors.
Posted on 12 September 2024 | 6:21 pm
A research group from the Hefei Institutes of Physical Science (HFIPS) of the Chinese Academy of Sciences recently developed a neural network-based absorbance recovery method to improve the accuracy of single path tunable diode laser absorption spectroscopy (TDLAS) measurement.
Posted on 12 September 2024 | 5:44 pm
Two researchers at the University of Warsaw developed a quantum-inspired super-resolving spectrometer for short pulses of light. The device designed in the Quantum Optical Devices Lab at the Centre for Quantum Optical Technologies, Centre of New Technologies and Faculty of Physics UW offers over a two-fold improvement in resolution compared to standard approaches. In the future, it can be miniaturized on a photonic chip and applied in optical and quantum networks as well as in spectroscopic studies of matter.
Posted on 12 September 2024 | 4:39 pm
A new software package developed by researchers at Macquarie University can accurately model the way waves—sound, water or light—are scattered when they meet complex configurations of particles.
Posted on 12 September 2024 | 2:30 pm
The pharmaceutical manufacturing industry has long struggled with the issue of monitoring the characteristics of a drying mixture, a critical step in the production of medication and chemical compounds.
Posted on 12 September 2024 | 2:30 pm
Researchers at the Max Planck Institute for Nuclear Physics in Heidelberg have succeeded in selectively manipulating the motion of the electron pair in the hydrogen molecule.
Posted on 12 September 2024 | 1:52 pm
Researchers have developed a new smartphone-based digital holographic microscope that enables precision 3D measurements. The highly portable and inexpensive microscope could help bring 3D measurement capabilities to a broader range of applications, including educational uses and point-of-care diagnostics in resource-limited settings.
Posted on 11 September 2024 | 9:19 pm
When properly planned, large retail projects can benefit from the improved illumination, energy savings, low maintenance, reduced downtime, and lower costs of LED lighting retrofits.
Posted on 11 September 2024 | 4:54 pm
Photonic applications harness the power of light-matter interactions to generate various intriguing phenomena. This has enabled major advances in communications, medicine, and spectroscopy, among others, and is also used in laser and quantum technologies.
Posted on 11 September 2024 | 3:57 pm
A research team led by Professor Sheng Zhigao at the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has, for the first time, observed the strong nonlinear magnetic second harmonic generation (MSHG) induced by the ferromagnetic order in monolayer CrPS4, with the help of the Steady High Magnetic Field Facility.
Posted on 10 September 2024 | 4:40 pm
In a new Physical Review Letters study, scientists have demonstrated the first experimental observation of non-Hermitian edge burst in quantum dynamics using a carefully designed photonic quantum walk setup.
Posted on 10 September 2024 | 1:40 pm
Today's computers reach their physical limits when it comes to speed. Semiconductor components usually operate at a maximum usable frequency of a few gigahertz—which corresponds to several billion computing operations per second.
Posted on 9 September 2024 | 3:52 pm
Physicists at the University of Southampton have tested and proven a 50-year-old theory for the first time using electro-magnetic waves. They have shown that the energy of waves can be increased by bouncing "twisted waves"—those with angular momentum—off of an object which is rotating in a specific way.
Posted on 9 September 2024 | 3:40 pm
Researchers have demonstrated a new multi-functional device that could help advance the scalability of solid-state color centers, enabling them to be used in larger and more complex quantum computers and networks. As efficient photon-spin interfaces, solid-state color centers are promising candidates for qubit nodes—essential units for storing and processing quantum information.
Posted on 9 September 2024 | 1:33 pm
Solving the problem of error is essential for the practical application of quantum computing technologies that surpass the performance of digital computers. Information input into a qubit, the smallest unit of quantum computation, is quickly lost and error-prone.
Posted on 9 September 2024 | 1:23 pm
Researchers have achieved data rates as high as 424Gbit/s across a 53-km turbulent free-space optical link using plasmonic modulators—devices that use special light waves called surface plasmon polaritons to control and change optical signals. The new research lays the groundwork for high-speed optical communication links that transmit data over open air or space.
Posted on 6 September 2024 | 5:43 pm
Scientists have made a significant leap in developing lasers that use sound waves instead of light. These phonon lasers hold promise for advancements in medical imaging, deep-sea exploration, and other areas.
Posted on 6 September 2024 | 5:27 pm
Researchers have developed a new way to see organs within a body by rendering overlying tissues transparent to visible light. The counterintuitive process—a topical application of food-safe dye—was reversible in tests with animal subjects, and may ultimately apply to a wide range of medical diagnostics, from locating injuries to monitoring digestive disorders to identifying cancers.
Posted on 5 September 2024 | 6:00 pm
As the global energy crisis intensifies and climate change accelerates, finding sustainable solutions for energy management is increasingly urgent. One promising approach is passive radiative cooling, a technology that allows objects to cool by emitting heat directly into space, requiring no additional energy.
Posted on 5 September 2024 | 8:03 am
The invention of optical frequency combs revolutionized frequency metrology and time-keeping. Miniaturization of such combs onto photonic chips, primarily leveraging the microresonator Kerr soliton frequency comb, expands on these functionalities by providing portable solutions to ultrafast spectroscopy, laser frequency synchronization, as well as stable optical, millimeter wave, and microwave frequency generation.
Posted on 4 September 2024 | 8:24 pm
As the "eyes of industry," 3D measurement technology provides comprehensive, accurate, and reliable 3D information for high-end precision manufacturing. Optical measurement methods, such as structured light projection, have been widely adopted in various fields, including industrial inspection, intelligent assembly, advanced manufacturing, and material sorting.
Posted on 4 September 2024 | 8:23 pm
Topological physics, which focuses on physical quantities that remain invariant under deformations, has garnered widespread interest in different areas of physics—photonics, quantum computing, solid-state physics, acoustics, and electronic circuits—due to its potential for noise-immune computation and signal processing.
Posted on 4 September 2024 | 8:22 pm
Diamond is in many ways the ultimate material. Besides its enduring aesthetic value, diamond is also a highly versatile industrial material. While its claim as the hardest substance known to science has been usurped by ultra-rare minerals and newly developed synthetic materials, it still sits on the top of many rankings of material properties.
Posted on 4 September 2024 | 6:53 pm
Researchers at the Paris Institute of Nanoscience at Sorbonne University have developed a new method to encode images into the quantum correlations of photon pairs, making it invisible to conventional imaging techniques. The study is published in the journal Physical Review Letters.
Posted on 4 September 2024 | 5:41 pm
The fine and efficient control of the properties of light at ultrafast speed down to the picosecond timescale is a challenging task, crucial for many scientific applications and technologies. For instance, in free-space optical links, manipulating on demand the attributes of light can be exploited to encode and transfer digital information robustly, over long distances and without optical fibers.
Posted on 3 September 2024 | 8:45 pm
Candle flames and airplane engines produce tiny soot particles from polycyclic aromatic hydrocarbons (PAHs) as their precursors, both of which are harmful to humans and the environment. These carbon-based particles are also common in space, making up 10–12% of interstellar matter, and are becoming valuable for use in electronic devices and sustainable energy. However, the fingerprint signals of soot and PAHs have very short lifespans in flames—lasting only a few billionths to millionths of a second. This brief existence requires very fast cameras to capture their behavior in both space and time.
Posted on 3 September 2024 | 8:00 pm
Researchers from Skoltech, Universitat Politècnica de València, Institute of Spectroscopy of RAS, University of Warsaw, and University of Iceland have demonstrated the spontaneous formation and synchronization of multiple quantum vortices in optically excited semiconductor microcavities.
Posted on 3 September 2024 | 2:14 pm
Terahertz (THz) waves and THz technologies have gradually opened a new style for communications, cloud-based storage/computing, information contest, and medical tools. With the advancement of THz technologies, studies on THz nonlinear optics have emerged, achieving considerable breakthroughs in both physics and technology.
Posted on 2 September 2024 | 6:51 pm
In both the natural world and human society, there commonly exist complex systems, such as climate systems, ecological systems, and network systems. Due to the involvement of numerous interacting elements, complex systems can stay in multiple different states, and their overall behavior generally exhibits randomness and high disorder.
Posted on 2 September 2024 | 6:18 pm
Near infrared (NIR) hyperspectral imaging is a highly promising detection technology capable of capturing detailed 3D spectral-spatial information, facilitating the identification and characterization of materials and targets based on their spectral signatures.
Posted on 2 September 2024 | 3:09 pm
Healthy lighting technology is receiving increasingly widespread attention. Traditional solid-state lighting sources utilize photoluminescence down conversion technology to realize ideal white emission. Specifically, yellow phosphors are excited by blue LEDs, or three-primary-color phosphors are excited by ultraviolet LEDs.
Posted on 2 September 2024 | 3:01 pm
PNNL researchers compare the effectiveness and energy use of GUV to other methods for meeting CDC and ASHRAE guidelines on indoor air quality.
Posted on 28 August 2024 | 4:59 pm
DLC’s LUNA guidance gets a nod from the GSA, as the consortium shares study findings that elaborate on energy/cost benefits of qualified outdoor lighting.
Posted on 15 August 2024 | 10:31 pm
Technology startup founder SARAH MORGAN opens a series about circadian lighting opportunities with a call for readers to vote on covered project findings.
Posted on 7 August 2024 | 6:17 pm
LED developers continue to push performance in compact emitters, digging in to refine thermal management and optical designs for a range of use cases.
Posted on 5 August 2024 | 8:03 pm
ZHAGA CONSORTIUM members summarize how replaceable components prolong the useful life of luminaires and contribute to a circular economy.
Posted on 25 July 2024 | 1:34 pm
Any sustainability initiative must include protection of night skies, says the nonprofit, as it joins forces with LUCI.
Posted on 23 July 2024 | 4:56 pm
A name change is coming at owner SGH to reflect the computing emphasis. SK Telecom invests $200 million for AI development, soon after SGH boss says LED industry will likely consolidate. Is Cree in or out?
Posted on 18 July 2024 | 9:17 pm
DLC program director LIESEL WHITNEY-SCHULTE condenses the core industry initiatives in which the DLC participates to inform standards development and product assessment criteria.
Posted on 17 July 2024 | 12:56 pm
High-bay lighting from Luminis contributes to a unique restaurant aesthetic in Earl Giles Distillery production space.
Posted on 16 July 2024 | 7:53 pm
RAC secured a commitment from the Conservative Party. With Labour now in power, there’s no guarantee the research will continue.
Posted on 15 July 2024 | 6:11 pm
Will owner SGH sell the venerable chip maker? Or is it looking to buy?
Posted on 11 July 2024 | 5:36 pm
Cree LED president JOE CLARK credits manufacturing outsourcing, application-specific advances, and a collaborative R&D facility with bolstering the LED developer through challenges.
Posted on 10 July 2024 | 12:00 pm
The Montreal company partners with Pittsburgh’s Leaficient to enhance the SUN as a Service offering.
Posted on 9 July 2024 | 8:06 pm
So say the authors of a new paper that is bound to stir controversy.
Posted on 5 July 2024 | 4:23 pm
Recycled aluminum, reusability, and night sky protection all factor into a rugged new wall-mounted line.
Posted on 3 July 2024 | 3:49 pm
Not all recycling is created equal. A pilot project involving a sprawling Oslo office park yields promising results.
Posted on 28 June 2024 | 12:00 pm
The LIA and consultancy 42 Partners Limited reveal some “dirty secrets” regarding photometric data and explain how results can be cleaned up to improve software tools and, in turn, design outcomes.
Posted on 27 June 2024 | 2:24 pm
The world’s largest lighting provider will be insisting on eco practices when it negotiates with its vendors.
Posted on 26 June 2024 | 3:23 pm
LEDs Magazine editor-in-chief CARRIE MEADOWS shares with great sadness that former editor Maury Wright has passed, and celebrates his memory.
Posted on 25 June 2024 | 6:13 pm
Posted on 18 June 2024 | 3:05 pm
The LED lighting vendor’s plans for greenhouse gas reduction by 2030 and 2045 are solid, say London’s Science Based Targets Initiative.
Posted on 17 June 2024 | 7:21 pm
Leonardo UK taps Signify for a decade of “LaaS” including end-of-life provisions. Contracts like this might help Signify spin out of the indoor lighting doldrums, especially in Europe.
Posted on 14 June 2024 | 4:14 pm
LEDs Magazine editor CARRIE MEADOWS shares details on a new podcast launching in June 2024.
Posted on 12 June 2024 | 5:43 pm
CRAIG DILOUIE makes sense of custom rebates for commercial lighting projects — when to pursue, what to prepare, and how to capitalize on them.
Posted on 12 June 2024 | 4:05 pm