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High-resolution photoelectron momentum distributions of Xe atoms ionized by 800-nm linearly polarized laser fields have been traced at intensities from 1.1*1013 to 3.5*1013W/cm2 using velocity-map imaging techniques. At certain laser…

Atomic Physics · Physics 2015-12-09 Min Li , Peng Zhang , Siqiang Luo , Yueming Zhou , Qingbin Zhang , Pengfei Lan , Peixiang Lu

Joint radar-communications (JRC) benefits from multi-functionality of radar and communication operations using same hardware and radio frequency (RF) spectrum resources. Thus JRC systems possess very high potential to be employed into the…

Signal Processing · Electrical Eng. & Systems 2022-11-17 Aryan Kaushik , Evangelos Vlachos , Muhammad Z. Shakir , Wonjae Shin , Rongke Liu

Diffusion models manifest evident benefits across diverse domains, yet their high sampling cost, requiring dozens of sequential model evaluations, remains a major limitation. Prior efforts mainly accelerate sampling via optimized solvers or…

Machine Learning · Computer Science 2025-09-22 Haoran Zhao , Tong Bai , Lei Huang , Xiaoyu Liang

The throughput achievable in truncated Hybrid ARQ protocol (HARQ) using incremental redundancy (IR) in analyzed when transmitting over a block-fading channel whose state is unknown at the transmitter. We allow the transmission lengths to…

Information Theory · Computer Science 2012-07-03 Leszek Szczecinski , Ciro Correa , Luciano Ahumada

The evolution of programmable metasurfaces (PM) from passive beamforming to active information transmission marks a paradigm shift for next-generation wireless systems. However, this transition is hindered by fundamental limitations in…

Information Theory · Computer Science 2025-11-18 Xuehui Dong , Miyu Feng , Chen Shao , Bokai Lai , Jianan Zhang , Rujing Xiong , Kai Wan , Tiebin Mi , Robert Caiming Qiu

Using a high-frequency field superposed to a linearly polarized bichromatic laser field composed by a wave with frequency $\omega $ and a wave with frequency $2\omega $, we show it is possible to enhance the intensity of a group of high…

Atomic Physics · Physics 2009-11-06 C. Figueira de Morisson Faria , M. L. Du

Magnetic resonance imaging of $^{13}$C-labeled metabolites enhanced by parahydrogen-induced polarization (PHIP) can enable real-time monitoring of processes within the body. We introduce a robust, easily implementable technique for…

We demonstrate a novel technique for producing high-order harmonics with designer spectral combs in the extreme ultraviolet-soft X-ray range for resonance applications using spectrally controlled visible lasers. Our approach enables…

Rydberg atomic receivers offer a quantum-native alternative to conventional RF front-ends by directly detecting electromagnetic fields via highly excited atomic states. While their quantum-limited sensitivity and hardware simplicity make…

Information Theory · Computer Science 2025-05-06 Jiuyu Liu , Yi Ma , Rahim Tafazolli

In this work, we employ multiple energy harvesting relays to assist information transmission from a multi-antenna hybrid access point (HAP) to a receiver. All the relays are wirelessly powered by the HAP in the power-splitting (PS)…

Information Theory · Computer Science 2020-01-29 Shimin Gong , Yuze Zou , Dinh Thai Hoang , Jing Xu , Wenqing Cheng , Dusit Niyato

A method to achieve High-Brightness Self-Amplified Spontaneous Emission (HB-SASE) in the Free Electron Laser (FEL) is described. The method uses repeated non-equal electron beam delays to de-localise the collective FEL interaction and break…

Accelerator Physics · Physics 2015-06-12 B. W. J. McNeil , N. R. Thompson , D. J. Dunning

In this paper, we propose a movable antenna (MA) empowered scheme for symbiotic radio (SR) communication systems. Specifically, multiple antennas at the primary transmitter (PT) can be flexibly moved to favorable locations to boost the…

Information Theory · Computer Science 2024-03-25 Bin Lyu , Hao Liu , Wenqing Hong , Shimin Gong , Feng Tian

The signal-to-noise ratio (SNR) in magnetic resonance imaging (MRI) governs the quality of signal detection and directly impacts the clarity and reliability of the acquired images. Recent advances in metamaterials have enabled lightweight…

Medical Physics · Physics 2026-01-27 Yuhan Liu , Xia Zhu , Ke Wu , Stephan W. Anderson , Xin Zhang

Propagation of a weak probe pulse through a $\Lambda$ system in a resonant gain configuration is investigated. We employ the control field intensity that permits the amplification of probe pulse during propagation, without instability at…

Optics · Physics 2022-02-03 Nilamoni Daloi , Tarak Nath Dey

Spacecraft data reveals a nonuniform ambipolar electric field transverse to the magnetic field in a thin magnetotail current sheet that leads to intense ExB velocity shear and non-gyrotropic particle distributions. The ExB drift far exceeds…

An overview of several dynamic properties of SQUID metamaterials is given in the presence of both constant and alternating magnetic field. The total current as a function of the driving frequency exhibits hysteretic effects which are…

Mesoscale and Nanoscale Physics · Physics 2014-11-25 G. P. Tsironis , N. Lazarides

This study explores the world of across-layer sliding ferroelectricity in multilayer hexagonal boron nitride (hBN) and gallium nitride (hGaN), aiming to control out-of-plane polarization. By investigating the effects of sliding single or…

Materials Science · Physics 2025-04-08 Sanber Vizcaya , Felipe Perez Riffo , Juan M. Florez , Eric Súarez Morell

Smart Repeaters (SR) can potentially enhance the coverage in Millimeter-wave (mmWave) wireless communications. However, the angular coverage of the existing two-panel SR is too limited to make the SR a truly cost-effective mmWave range…

Signal Processing · Electrical Eng. & Systems 2022-10-11 Kai Dong , Silvia Mura , Marouan Mizmizi , Dario Tagliaferri , Umberto Spagnolini

We exploit multi-path fading propagation to improve both the signal-to-interference-plus-noise-ratio and the stability of wireless communications within electromagnetic environments that support rich multipath propagation. Quasi-passive…

Signal Processing · Electrical Eng. & Systems 2022-06-17 Jean Baptiste Gros , Geoffroy Lerosey , Fabrice Lemoult , Mir Lodro , Steve Greedy , Gabriele Gradoni

We consider transmission band edge resonance in periodic layered structures involving birefringent layers. Previously we have shown that the presence of birefringent layers with misaligned in-plane anisotropy can dramatically enhance the…

Optics · Physics 2009-11-13 Alex Figotin , Ilya Vitebskiy