Results 81 to 90 of about 439,540 (206)

Gradient-Index-Based Frequency-Coded Retroreflective Lenses for mm-Wave Indoor Localization

IEEE Access, 2020
This article introduces retroreflective lenses for millimeter-wave radio-frequency indoor localization. A three-dimensional (3D) gradient-index Luneburg lens is employed to increase radar cross section (RCS) of photonic-crystal high-Q resonators and its ...
Petr Kadera, Alejandro Jimenez-Saez, Tom Burmeister, Jaroslav Lacik, Martin SchusBler, Rolf Jakoby   +5 more
doaj   +1 more source

Metasurface‐Based Multidimensional Light‐Field Manipulation: From Technologies to Applications

Advanced Science, EarlyView.
Multidimensional metasurfaces enable versatile manipulation of multiple optical degrees of freedom, including phase, amplitude, polarization, wavelength, and orbital angular momentum. This review summarizes their fundamental mechanisms, emerging strategies for multidimensional light‐field control, and key applications in optical computing, imaging ...
Heliang Yin, Shuo Sun, Jiahao Zhang, Jianuo Hu, Yubin Qiao, Liang Chen, Jin Li   +6 more
wiley   +1 more source

Perspective: Quantum Computing on Magnetic Racetrack

Advanced Electronic Materials, EarlyView.
Magnetic domain walls emerge as mobile qubits on quantum racetracks, where chirality encodes quantum information and current‐driven motion enables flying‐qubit functionality. This Perspective outlines the physical principles, gate mechanisms, material requirements, and experimental roadmap for realizing scalable quantum computing with magnetic textures,
Ji Zou, Jelena Klinovaja, Daniel Loss
wiley   +1 more source

Photonic computing enabled end-to-end image compression and reconstruction with adjustable ratio and high-fidelity

Nature Communications
The rapid development of remote sensing, satellite radar, and medical equipment has created an imperative demand for ultra-efficient image compression and reconstruction. We demonstrate an end-to-end image compression and reconstruction approach using an
Yuhang Wang, Ang Li, Yihang Shao, Qiang Li, Yang Zhao, Shilong Pan   +5 more
doaj   +1 more source

Ultralow Phase Noise Optoelectronic Oscillator and Its Application to a Frequency Synthesizer

Leida xuebao, 2019
We propose a novel injection-locked OptoElectronic Oscillator (OEO) with ultralow phase noise based on two cascaded phase modulators, which is further applied to construct a frequency synthesizer.
LIU Shifeng, XU Xiaorui, ZHANG Fangzheng, LIU Peng, KANG Xiaochen, YANG Huashan, PAN Shilong   +6 more
doaj   +1 more source

Physical Unclonable Functions From Microwave Metasurface Fingerprints

Advanced Electronic Materials, EarlyView.
Nominally identical metasurfaces fabricated through standard PCB processes inevitably contain microscopic fabrication imperfections. This work demonstrates that these unavoidable electromagnetic deviations can serve as unique physical unclonable fingerprints for wireless authentication.
Guanxiong Shen, Jingyi Liang, Xinyu Li, Kezhan Zhao, Jian Wei You   +4 more
wiley   +1 more source

Optimal Power Allocation Algorithm for Radar Network Systems Based on Low Probability of Intercept Optimization(in English)

Leida xuebao, 2014
A novel optimal power allocation algorithm for radar network systems is proposed for Low Probability of Intercept (LPI) technology in modern electronic warfare. The algorithm is based on the LPI optimization.
Shi Chen-guang, Wang Fei, Zhou Jian-jiang, Chen Jun   +3 more
doaj   +1 more source

Innovative Concepts in Microwave Photonics [PDF]

, 2012
This paper reports the work carried by ITEAM researchers on novel concepts in the field of Microwave Photonics (MWP). It includes activities related to the general modelling of MWP systems, the use of novel multicore fibers and recent advances in the
Sancho Durá, Juan, Mora Almerich, José, Lloret Soler, Juan Antonio, Capmany Francoy, José, Gasulla Mestre, Ivana, Sales Maicas, Salvador   +5 more
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Microwave and Terahertz Generation Based on Photonically Assisted Microwave Frequency Twelvetupling With Large Tunability

IEEE Photonics Journal, 2010
A novel approach to achieving photonically assisted microwave frequency twelvetupling with large frequency tunability is proposed and demonstrated. The frequency twelvetupling is realized through a joint operation of polarization modulation, four-wave ...
Wangzhe Li, Jianping Yao
doaj   +1 more source

The Boston University Photonics Center annual report 2016-2017 [PDF]

, 2017
This repository item contains an annual report that summarizes activities of the Boston University Photonics Center in the 2016-2017 academic year. The report provides quantitative and descriptive information regarding photonics programs in education ...
The Boston University Photonics Center
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