Dielectric metalenses have made significant progress in compact imaging systems, offering aberration-correction and dispersion-engineering capabilities. However, challenges such as phase discretization, diffraction constraints, and crosstalk among sub-units need to be addressed for practical development.
Researchers have developed a fibre-optic transmission system that integrates SDM, PDM, and DWDM over a 34-km long fibre, achieving a raw capacity of 1.223 Pb/s with a spectral efficiency of 156.8 bit/s/Hz. The system utilizes OAM modes to reduce MIMO complexity, enabling low power consumption and scalability.
A new study demonstrates bound vortex light on optical chips by simulating gauge fields of cosmic strings. The research team created a deformed photonic graphene inspired by cosmic strings, which can generate and transport optical vortices and control photon orbital angular momentum.
Researchers developed a technique for controlling ENZ media by introducing multiple dielectric rods, called photonic dopants. This allows for independent control of responses at specific frequencies, enabling applications such as optical tagging and digitally reconfigurable filters.
Researchers experimentally verified the generalized eigenstate thermalization hypothesis (GETH) using a quantum-walk platform. They demonstrated that any superposition state within a small energy-momentum window relaxes to the same reduced state, independent of the initial state.
Researchers develop new scheme to measure tunneling time without theoretical calculation, finding ionization times decrease with increasing electron energy. The technique provides insight into fundamental dynamics of laser-matter interaction and potential retrieval of geometrical information.
Researchers developed a novel approach to generate high-speed random numbers using self-chaotic microcavity lasers. The study achieved physical random numbers at 10 Gb/s, paving the way for small and robust random signal sources.
A team of scientists developed RASTMIN, a method that achieves equivalent resolution to MINFLUX but can be implemented in standard confocal microscopes. RASTMIN enables nanometre resolution and can be used with existing laser-scanning microscopes.
Researchers have developed a novel neural network architecture that achieves unprecedented generalization to unseen sample types, outperforming classical algorithms and state-of-the-art models. The Fourier Imager Network (FIN) demonstrates superior computational speed in phase retrieval and holographic image reconstruction tasks.
Researchers develop pulsed laser-assisted synthetic route to create metal nanoparticles with high purity, eliminating toxic by-products and requiring less energy and time. This technique enables the production of non-toxic, highly functional nanomaterials for various energy and environmental applications.
A new AI-designed camera can only record objects of interest, erasing others through light diffraction, maximizing privacy protection. The camera is data- and energy-efficient, making it suitable for power-limited imaging applications.
A new approach to studying cell binding has been developed, allowing for precise measurement of adhesion forces in various conditions. This technique, scRAFA, enables label-free and sub-cellular-resolution quantification of adhesion, with applications in fields such as cell biology, immunotherapy, and urinary tract infection.
A new AI-rendering system leverages layered depth image representation to create high-quality phase-only 3D holograms in real-time on consumer desktops and cellphones. The system corrects vision aberrations and produces realistic depth boundaries, making holographic displays more accessible.
Researchers have developed a new technology named SPIM-WGs, which efficiently fabricates optical waveguides with continuously variable 3D cross-sections. This allows for superior performance and new features, paving the way for future photonic and quantum chips.
Scientists have developed a novel method to probe the longitudinal distribution of light-matter interaction in gap-mode plasmonic nanocavities. By embedding monolayer MoS2 as an emitter in the nanogap, they achieve spatial resolution of ~1 nm and observe significant photoluminescence enhancement factors up to 2800 times.
Researchers developed an optical fiber sensor to measure local temperatures on metal surfaces during photo-electrocatalytic reactions. The sensor achieved a thermal resolution of 0.1°C and temporal resolution of 0.1 seconds, revealing correlations between light-induced heating and catalytic activities.
Researchers have developed a method to generate and control mid-infrared hyperbolic polariton vortices at the nanoscale, enabling new opportunities for super-resolution sensing, imaging, and communication systems. The study uses hexagonal boron nitride as a host material and achieves broad reconfigurability of topological charges.
A team of scientists has developed a reconfigurable intelligent surface (RIS) called 'Intelligent Walls' for controlling electromagnetic waves to monitor human activities remotely. The technology harnesses ambient signals and can track activities like walking, sitting, and standing with high resolution.
Photoinduced large polaron transport and dynamics in organic-inorganic hybrid lead halide perovskite have been studied using terahertz probes. The researchers found that the formation of large polarons protects charge carriers from scattering with grain boundaries or defects, explaining the long lifetime of photoconductivity.
Researchers have developed an experimental platform to demonstrate the quantum fault-tolerant threshold, a crucial concept in quantum computing. The team observed the error rate threshold using two entangled photons and confirmed its existence through single-qubit and two-qubit operations.
Researchers review current progress on DUV NLO crystals, discussing key performance criteria, material development, and design strategies to surpass existing KBBF crystals. They propose rational tuning of interlayer cations as an effective strategy to improve DUV NLO performance.
A team of scientists has proposed a new concept of 'superabsorption' to solve the difficulty of realizing single-mode lasers in microscale cavities. They designed an n-PtNPs@ZnO:Ga MW/Pt/MgO/p-GaN heterojunction with excellent lasing performance and single-mode operation.
Researchers have developed a new algorithm to reconstruct incident light field from far-field speckles, enabling three-dimensional quantitative phase imaging with nanoscale axial sensitivity and lateral resolution. This technology paves the way for in vivo label-free characterization of cells and tissue with minimal invasiveness.
Researchers demonstrate a fibre-optic transmission system using OAM modes, achieving a raw capacity of 1.223 Pb/s and spectral efficiency of 156.8 bit/s/Hz. The system uses a 34-km long 7-core ring core fibre with low MIMO complexity.
Researchers have created a tunable liquid crystal grating based holographic 3D display system that achieves a wide viewing angle of 57.4°, seven times greater than conventional systems. The system can also enlarge the size of holographic images by up to 4.2 times and is simple to operate.
A joint team of scientists developed a terahertz spatial light modulator based on metasurface absorber and dual-frequency liquid crystal, enabling dual-color THz CS imaging. The auto-calibrated CS algorithm improves image fidelity, while frequency-switching enables Hadamard masks with negative element values.
Researchers develop BPAWR-SACM process to generate designable spatially coherent wide-band radiation without resonant cavity. The technique amplifies centered non-absorption band with gain up to 26.02 dB, enabling frequency modulation in visible light range.
Researchers present a broad overview of modern computer-generated holography (CGH) algorithms, acceleration techniques, and dedicated hardware solutions. They classify CGH algorithms based on discretization methods and discuss visual quality assessment to optimize perceptual quality.
The Holography and Metamaterials Lab uses a Mach-Zehnder interferometer to record holograms containing intensity and phase information. These are reconstructed and combined to create true 3D virtual reality and high-resolution topograms of fingerprints, revealing level-3 details.
Researchers have discovered a new application of holographic interferometry, enabling the measurement of real-time vibrations on reflective surfaces. This technique has significant implications for industries such as aviation, where it can help prevent engine failure and improve overall efficiency.
Researchers have realized giant enhancement of two-dimensional excitonic upconversion using doubly resonant plasmonic nanocavity. The system boosts upconversion intensity by over 1000-fold and reduces saturation threshold power by 2-3 orders. This achievement lays a solid foundation for net optical refrigeration.
Scientists have created a new label-free 3D microscopy technique called transport of intensity diffraction tomography with non-interferometric synthetic aperture (TIDT-NSA). This allows for high-quality imaging without the need for fluorescent dyes or proteins, and can be performed under arbitrary illumination conditions.
Scientists successfully realize one-dimensional nodal ring and ridge states, enabling novel functional photonic devices such as sharp bend waveguides and microcavity lasing. The discovery also introduces intrinsic relationship between optical Tamm state and nodal ring, paving the way for deterministic design of optical phenomena.
Scientists have demonstrated nonlinear generation and topological tuned confinement of THz waves in an engineered lithium niobate chip. Topological control of THz waves may bring about new possibilities in the realization of THz integrated circuits, reducing scattering loss and decay.
Researchers have made a breakthrough in controlling metamaterials with brainwaves, enabling real-time, remote, and wireless applications. The team developed a framework for remotely mind-controlled metasurfaces using Bluetooth technology.
Researchers create an electromagnetic brain-computer-metasurface (EBCM) that can decode operator's intentions and send commands wirelessly. The system uses EEG signals to translate brain messages into various EM commands, enabling text communication between operators.
Researchers investigate the formation process and fluorescence mechanism of o-phenylenediamine-based red emission CDs. The study reveals a systematic approach to analyzing emission mechanisms, providing insights into the structure-property relationship of carbon dots.
Recent research reviews progresses in miniaturized spectrometers, focusing on integrated spectrometers with CMOS-compatible integration platforms. The authors establish performance benchmarks and discuss technological advancements in wavelength de-multiplexing and multiplexing-based spectrometers.
Scientists develop a universal design framework for arbitrary on-chip spatial mode control using metamaterial building blocks, enabling record-high order mode up to the 20th. The method supports high-efficiency integrated photonic communication systems and boosts development of various information processing fields.
Researchers successfully developed neutron-transmutation doping for 2D layered Indium Selenide (InSe) phototransistors, narrowing the bandgap and increasing electron mobility. The technique improved responsivity by about fifty times, opening up new opportunities in materials-based technologies.
Scientists develop a method to suppress the crosstalk effect in top-emitting micro-LED-based displays by filling the space between each chip with a light-blocking matrix. The resulting full-color display prototype achieves a color gamut of up to 122% NTSC, surpassing conventional displays.
Researchers have developed advanced liquid crystal devices for augmented reality (AR) and virtual reality (VR) displays, improving image quality and formfactor. The devices address challenges such as light efficiency, resolution density, and ambient contrast ratio, providing valuable guidelines for future LC device development.
Researchers developed highly efficient pure green-emitting InP-based QLEDs with an external quantum efficiency of 15.2%. The performance can be optimized by regulating the components of the inner alloyed ZnSe shell, reducing surface defects and increasing photoluminescence quantum yield.
A new optical architecture enables high-speed, low-power computation of multiple linear transformations using light diffraction. The design allows for scalable parallel processing and can perform complex tasks such as image classification and encryption with enhanced multifunctionality.
Scientists introduce a new type of structured light as high-dimensional information carriers for free-space optical communication, supporting thousands of independently spatial channels. The novel modal set has a highly consistent propagation behavior, enabling a divergence degeneracy as high as 20.
Scientists have developed a built-in push-pull acousto-optic modulator with high energy overlap, achieving comparable efficiency to suspended counterparts. The device overcomes issues with low modulation efficiency and exhibits excellent characteristics for on-chip microwave-to-optical conversion devices.
The study explores the synergy between Floquet matter and metamaterials, enabling nonreciprocal propagation, time-reversal, and novel optical gain. Periodic temporal modulation can produce a synthetic effective magnetic field in topological insulators, opening new avenues for wave control.
A team of scientists has created a new manufacturing routine and application of binary amplitude-only holograms for direct drug printing. The diffraction pattern reflects the amount of cargo remaining in the hologram, enabling tracking of substance release over time.
Researchers develop an all-optical approach using photoluminescence to analyze radiative and nonradiative recombination processes in semiconductors. By combining Raman spectroscopy with PL data, they can extract quantitative information on carrier recombination dynamics, including defect density and capture cross-sections.
Researchers develop innovative scheme to manipulate light with orthogonal circular polarization and conjugated PB phase in a single layer. They successfully generate reflective optical vortex and vector beams with enhanced efficiency and compact configuration.