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Thin-film lithium niobate (TFLN) is a widely used platform for nonlinear frequency conversion, as its strong nonlinear susceptibility and enhanced modal confinement intensify nonlinear interactions. Frequency doubling from NIR to visible…

光学 · 物理学 2025-04-15 Sagar P. Doshi , Gavin N. West , Dodd Gray , Rajeev J. Ram

We propose a new scheme in which perfect transmission of 1-qubit information is achieved with high success using purposefully delayed sharing of non-maximally entangled 2-qubit resource and repeated generalized Bell-state measurements…

量子物理 · 物理学 2021-01-01 Shamiya Javed , Ranjana Prakash , Hari Prakash

We experimentally demonstrate a record net capacity per wavelength of 1.23~Tb/s over a single silicon-on-insulator (SOI) multimode waveguide for optical interconnects employing on-chip mode-division multiplexing and 11$\times$11…

信号处理 · 电气工程与系统科学 2021-04-01 Hanzi Huang , Yetian Huang , Yu He , Haoshuo Chen , Yong Zhang , Qianwu Zhang , Nicolas K. Fontaine , Roland Ryf , Yingxiong Song , Yikai Su

Magnetic-field and microwave-frequency modulated DNP experiments have been shown to yield improved enhancements over conventional DNP techniques, and even to shorten polarization build-up times. The resulting increase in signal-to-noise…

仪器与探测器 · 物理学 2015-12-23 Mallory L. Guy , Lihuang Zhu , Chandrasekhar Ramanathan

Bandwidth measurements are conducted on a 1.4 m long spiral polymer multimode waveguide for a SMF and 50/125 um MMF launch and for different input offsets. The waveguide exhibits a bandwidth of at least 30 GHz for all input types, yielding…

仪器与探测器 · 物理学 2017-02-02 Jian Chen , Nikos Bamiedakis , Richard V. Penty , Ian H. White , Petter Westbergh , Anders Larsson

In this paper, we analyze the performance of a two- way subcarrier intensity-modulated (SIM) amplify-and-forward (AF) relaying system over free-space optics (FSO) communication channels. The analysis takes into consideration attenuations…

信息论 · 计算机科学 2017-08-18 Jaedon Park , Chan-Byoung Chae , Giwan Yoon

Federated edge learning (FEEL) is a framework for training models in a distributed fashion using edge devices and a server that coordinates the learning process. In FEEL, edge devices periodically transmit model parameters to the server,…

信号处理 · 电气工程与系统科学 2024-05-28 Marc Martinez-Gost , Ana Pérez-Neira , Miguel Ángel Lagunas

We employ externally shunted Nb-AlO$_x$-Nb Josephson junctions for demonstrating a circuit that is suitable for an optically driven Josephson Arbitrary Waveform Synthesizer (JAWS). This technology enables overdamped junctions with…

We demonstrate high-rate CV-QKD supporting a secure-key rate of 22Mb/s through spectral tailoring and optimal use of quantum receiver bandwidth. Co-existence with 11 adjacent carrier-grade C-band channels spaced by only 20nm is accomplished…

量子物理 · 物理学 2020-07-06 D. Milovančev , N. Vokić , F. Laudenbach , C. Pacher , H. Hübel , B. Schrenk

A 60 GHz wireless Gigabit Ethernet (G.E.) communication system capable of near gigabit data rate has been developed at IETR. The realized system covers 2 GHz available bandwidth. This paper describes the design and realization of the…

网络与互联网体系结构 · 计算机科学 2010-11-30 Lahatra Rakotondrainibe , Yvan Kokar , Gheorghe Zaharia , Guy Grunfelder , Ghaïs El Zein

Diffusion models have achieved cutting-edge performance in image generation. However, their lengthy denoising process and computationally intensive score estimation network impede their scalability in low-latency and resource-constrained…

计算机视觉与模式识别 · 计算机科学 2025-03-05 Qian Zeng , Jie Song , Han Zheng , Hao Jiang , Mingli Song

We show a beyond 200Gb/s VCSEL transmission experiment. Results are based on 35GHz VCSEL and advanced DSP. We show an AIR of 245Gb/s PAM-6 back-to-back, and 200Gb/s PAM-4 over 60m OM4 fiber assuming KP4-FEC.

信号处理 · 电气工程与系统科学 2024-03-27 Tom Wettlin , Youxi Lin , Nebojsa Stojanovic , Stefano Calabrò , Ruoxu Wang , Lewei Zhang , Maxim Kuschnerov

The computational efficiency of a state of the art ab initio quantum transport (QT) solver, capable of revealing the coupled electro-thermal properties of atomically-resolved nano-transistors, has been improved by up to two orders of…

计算工程、金融与科学 · 计算机科学 2019-12-23 Alexandros Nikolaos Ziogas , Tal Ben-Nun , Guillermo Indalecio Fernández , Timo Schneider , Mathieu Luisier , Torsten Hoefler

We introduce neural probabilistic amplitude shaping, a joint-distribution learning framework for coherent fiber systems. The proposed scheme provides a 0.5 dB signal-to-noise ratio gain over sequence selection for dual-polarized 64-QAM…

机器学习 · 计算机科学 2026-02-04 Mohammad Taha Askari , Lutz Lampe , Amirhossein Ghazisaeidi

To significantly improve the frequency references used in radio-astronomy and precision measurements in atomic physics, we provide frequency dissemination through a 642 km coherent optical fiber link, that will be also part of a forthcoming…

In this paper, the performance of high speed optical fiber based network is analysed by using dispersion compensating module (DCM). The optimal operating condition of the DCM is obtained by considering dispersion management configurations…

网络与互联网体系结构 · 计算机科学 2015-03-12 Ojuswini Arora , Dr. Amit kumar Garg , Savita Punia

In wireless communication systems, dual-polarized (DP) instead of single-polarized (SP) multiple-input multiple-output (MIMO) transmission is used to improve the spectral efficiency under certain conditions on the channel and the…

信息论 · 计算机科学 2013-09-13 Adrian Ispas , Xitao Gong , Christian Schneider , Gerd Ascheid , Reiner Thomä

Broadcasting systems have to deal with channel variability in order to offer the best spectral efficiency to the receivers. However, the transmission parameters that maximise the spectral efficiency generally leads to a large link…

信息论 · 计算机科学 2014-01-17 Hugo Meric , Jose Miguel Piquer

We propose a convolutional-recurrent channel equalizer and experimentally demonstrate 1dB Q-factor improvement both in single-channel and 96 x WDM, DP-16QAM transmission over 450km of TWC fiber. The new equalizer outperforms previous…

Coarse quantization at the base station (BS) of a massive multi-user (MU) multiple-input multiple-output (MIMO) wireless system promises significant power and cost savings. Coarse quantization also enables significant reductions of the raw…

信息论 · 计算机科学 2016-04-21 Christoph Studer , Giuseppe Durisi
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