Results 131 to 140 of about 1,349 (239)

Adaptively programmable metasurface for intelligent wireless communications in complex environments

Nature Communications
The programmable metasurface or reconfigurable intelligent surface is one of the emerging technologies for next-generation wireless communications, but the existing programmable metasurfaces still rely on human control to reshape the electromagnetic (EM)
Han Qing Yang, Jun Yan Dai, Hui Dong Li, Lijie Wu, Zi Hang Shen, Qun Yan Zhou, Meng Zhen Zhang, Si Ran Wang, Zheng Xing Wang, Jun Wei Wu, Shi Jin, Wankai Tang, Qiang Cheng, Tie Jun Cui   +13 more
doaj   +1 more source

A visible‐to‐infrared miniaturized indium selenide spectrometer enabled by a gate‐tunable spectral response matrix

InfoScience, EarlyView.
Traditional light‐analyzing tools, known as spectrometers, are typically too bulky and expensive to fit into portable electronics like smartphones or wearables. In this study, we developed a microscopic, high‐performance spectrometer using a material called Indium Selenide combined with smart algorithms to accurately analyze light from the visible to ...
Jing Chen, Zhen‐Hua Wang, Zheng Zhang, Hengji Li, Xiao‐Ming Wu, Tian‐Ling Ren, Hong Liu, Min Jin, Lin Han   +8 more
wiley   +1 more source

Reprogrammable reflection-transmission integrated coding metasurface for real-time terahertz wavefront manipulations in full-space

Scientific Reports
In recent years, there has been notable advancement in programmable metasurfaces, primarily attributed to their cost-effectiveness and capacity to manipulate electromagnetic (EM) waves.
Parsa Farzin, Amir Saman Nooramin, Mohammad Soleimani   +2 more
doaj   +1 more source

Thin‐film lithium niobate photonics: Frontiers in millimeter‐wave and terahertz generation and integrated applications

InfoScience, EarlyView.
With the advancement of 6G communications, high‐precision radar, and advanced imaging technologies, there is a growing demand for compact, high‐performance light sources capable of generating high‐frequency radio waves (millimeter‐wave and terahertz waves). This article systematically introduces how to efficiently generate these high‐frequency waves on
Jianfeng Xiong, Zhenyu Wang, Xu Li, Guo Tang, Sizhe Wang, Jiyuan Huang, Guochao Wang, Shuhua Yan, Wenzhao Sun   +8 more
wiley   +1 more source

Nonlinear, Active, and Time-Varying Metasurfaces for Wireless Communications:A perspective and opportunities [PDF]

The requirements of next-generation wireless communications have been growing exponentially in recent years, not only in terms of data rates, but also of reliability, latency, and massiveness.
Popovski, Petar; id_orcid, Alu, Andrea, Radi, Younes, Nefedkin, Nikita   +3 more
core   +1 more source

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

Laser &Photonics Reviews, EarlyView.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil, Rajshree Swarnkar, Jonas L. Moos, Sebastian Töpfer, Sergio Tovar‐Pérez, Jorge Fuenzalida, Markus Gräfe   +6 more
wiley   +1 more source

Pancharatnam–Berry Phase Driven by Electrical Restructuring of Liquid Crystal Polarization Grating Period

Laser &Photonics Reviews, EarlyView.
Electrically controlled liquid‐crystal twist diffraction element based on the Pancharatnam–Berry phase enables switchable structural periodicity and simultaneous generation of orthogonal circularly polarized coherent waves for multifunctional planar photonic devices.
Elena Melnikova, Katsiaryna Pantsialeyeva, Alexei Tolstik, Veranika Stanevich, Daminika Dashkevich, Anatoli Murauski, Alexander Muravsky, Alina Karabchevsky   +7 more
wiley   +1 more source

Multiport Network Theory for Modeling and Optimizing Reconfigurable Metasurfaces [PDF]

International audienceMultiport network theory (MNT) is a powerful analytical tool for modeling and optimizing complex systems based on circuit models.
Di Renzo, Marco, del Hougne, Philipp
core   +1 more source

Near‐Infrared Polarimetric Imaging With Nonlinear Flat‐Optics

Laser &Photonics Reviews, EarlyView.
ABSTRACT A compact and broadband polarimetric imaging platform is presented, based on second‐harmonic generation (SHG) in nonlinear flat‐optics. The system employs periodic all‐dielectric AlGaAs gratings to induce polarization‐dependent SH emission, enabling pixel by pixel direct retrieval of the full Stokes vector from an input intensity distribution ...
Evgenii Menshikov, Marco A. López Sánchez, Paolo Franceschini, Andrea Tognazzi, Domenico de Ceglia, Kristina Frizyuk, Costantino De Angelis   +6 more
wiley   +1 more source

Physics-informed Inverse Design of Multi-bit Programmable Metasurfaces [PDF]

Emerging reconfigurable metasurfaces offer various possibilities in programmatically manipulating electromagnetic waves across spatial, spectral, and temporal domains, showcasing great potential for enhancing terahertz applications.
Xu, Yucheng, Jin, Biaobing, Zhan, De-Chuan, Zhang, Caihong, Fan, Kebin, Padilla, Willie J., Chen, Jian, Wu, Jingbo, Wu, Peiheng, Yang, Jia-Qi, Wang, Sheng   +10 more
core   +1 more source