Reconfigurable intelligent surfaces (RISs) are considered as an efficient solution for the implementation of extremely large-scale MIMO (XL-MIMO). To mitigate the complexity of channel information acquisition, beam tr...
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Dear editor, Video inpainting is a new technology of recovering the lost motion vectors or image blocks during the video sequence transmission. It aims to speculate the correct value of missing voxels from a given vid...
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Dear editor, Video inpainting is a new technology of recovering the lost motion vectors or image blocks during the video sequence transmission. It aims to speculate the correct value of missing voxels from a given video to achieve the automatic inpainting and make the inpainted video frames present a natural visual effect. However, video inpainting remains challenging owing to the difficulties coming from computational complexity, complex scenarios and the high requirement on spatial and temporal consistency.
In free space channel,continuous-variable quantum key distribution(CV-QKD)using polarized coherent-states can not only make the signal state more stable and less susceptible to interference based on the polarization n...
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In free space channel,continuous-variable quantum key distribution(CV-QKD)using polarized coherent-states can not only make the signal state more stable and less susceptible to interference based on the polarization non-sensitive of the free-space channel,but also reduce the noise introduced by phase ***,arbitrary continuous modulation can not be carried out in the past polarization coding,resulting in that the signal state can not obtain arbitrary continuous value in Poincare space,and the security analysis of CV-QKD using polarized coherent-states in free space is not *** we propose a new modulation method to extend the modulation range of signal states with an optical-fiber-based polarization *** particular,in terms of the main influence factors in the free-space channel,we utilize the beam extinction and elliptical model when considering the transmittance and adopt the formulation of secret key *** addition,the performance of the proposed scheme under foggy weather is also taken into consideration to reveal the influence of severe *** simulation shows that the proposed scheme is seriously affected by attenuation under foggy *** protocol fails when visibility is less than 1 *** the same time,the wavelength can affect the performance of the proposed ***,under foggy weather,the longer the wavelength,the smaller the attenuation coefficient,and the better the transmission *** proposed scheme can expand the modulation range of signal state,and supplement the security research of the scheme in the free-space channel,thus can provide theoretical support for subsequent experiments.
Seismology, as a crucial field of Earth science, is dedicated to understanding the internal structure of the Earth and crustal movements. In recent decades, rotational seismometers become increasingly mature, and rota...
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QRNGs, which leverage quantum mechanical principles to generate random numbers, are widely utilized in information security and cryptography. This paper reviews various QRNG systems and their evolution, with a particu...
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We propose an integrated spatial photonic Ising sampler using a high-uniformity multi-mode interferometer. It minimizes discrete and continuous spin Hamiltonians, achieves programmable spin couplings and external magn...
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Addressing the wavelength locking application scenario for massive-scale micro-ring modulator arrays, this paper proposes a high-speed signal modulation voltage swing adaptive wavelength locking technique for microrin...
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The reliable operation of the distribution network is intricately linked to the overall stability of the power system. However, existing methodologies often fall short in precisely identifying the fault location withi...
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We propose multi-task learning based NN equalization for nonlinearity compensation in coherent optical system. Compared with conventional NN equalization, 30% complexity reduction is achieved in an 800-Gb/s PDM-16QAM ...
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