Behavior of structure light is investigated by monitoring probe absorption using a microwave-driven Y-type atomic media *** system under consideration is driven by one of the control vortex beams as well as an extra n...
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Behavior of structure light is investigated by monitoring probe absorption using a microwave-driven Y-type atomic media *** system under consideration is driven by one of the control vortex beams as well as an extra non-vortex control beam to ensure electromagnetically induced *** significant aspect in the generation of structured light is the azimuthal phase-dependent modification for probe *** intensity distribution for absorption spectra is examined for simultaneously evaluating both the control vortex *** also go through the radial distribution of intensity for various orbital angular momentum *** modes of structural beams may be distinguished using the suggested *** research gives us a way for rapidly transferring vortex wavefronts from control field to probe absorption *** could be useful in quantum information processing.
In recent years, continuous-variable quantum key distribution(CV-QKD) has been proposed as a promising alternative to the most commonly implemented discrete-variable QKD [1]. A typical CV-QKD system includes mainly tw...
In recent years, continuous-variable quantum key distribution(CV-QKD) has been proposed as a promising alternative to the most commonly implemented discrete-variable QKD [1]. A typical CV-QKD system includes mainly two phases: quantum transmission and post-processing.
Modulation mode recognition of radio signal is a committed step between signal detection and signal demodulation. At present, quite a lot studies have fully proved that deep learning algorithms can effectively identif...
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作者:
Liu, YuanDai, PanXu, KaichuanWang, JiachengWang, YuTang, KaifeiDong, JunweiSun, ZhenxingWang, FengChen, XiangfeiNanjing University
Key Laboratory of Intelligent Optical Sensing and Manipulation of the Ministry of Education Engineering Research Center of Precision Photonics Integration and System Application of the Ministry of Education College of Engineering and Applied Sciences Institute of Optical Communication Engineering Nanjing University-Tongding Joint Lab for large-scale photonic integrated circuits National Laboratory of Solid State Microstructures Jiangsu Nanjing210093 China
We develop a novel broadband comb light source for sensing multiple fiber Bragg gratings (FBGs). This broadband light source is realized through a Fabry-Pérot laser with intracavity saturable absorbers (FP-SA), w...
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We demonstrate a quasi-distributed acoustic sensing system with low coherence optical frequency domain reflectometry and weak reflectors array. With broadband light source and simple structure, strain resolution of 0....
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Integrated Kerr quantum frequency combs (QFCs), with the potential to generate multiple and scalable quantum states, have emerged as a compact, stable, and fundamental resource for broadband entanglement. Here, we bui...
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Integrated Kerr quantum frequency combs (QFCs), with the potential to generate multiple and scalable quantum states, have emerged as a compact, stable, and fundamental resource for broadband entanglement. Here, we build a platform for designing bipartite entangled QFCs via an on-chip silicon nitride microring resonator. By establishing the system quantum dynamics of Kerr nonlinear microresonators, our platform can support up to 12 continuous-variable quantum modes, in the form of six simultaneously two-mode squeezed pairs under the influence of hysteresis. The entanglement degree of frequency-mode pairs is dependent on the resonator structure and ambient temperature. By adjusting the cavity temperature, we can optimize the performance of entanglement under certain injected pump power and pump detuning. Our comprehensive QFC designing process and entanglement distribution control may ameliorate the generation and optimization of entanglement.
A constellation independent look-up table (LUT) method for transceiver nonlinearity predistortion in digital-analog radio-over-fiber system is proposed and experimentally demonstrated, achieving a SNR gain of 1.04dB. ...
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The prediction of Remaining Useful Life (RUL) serves as a key indicator in the prognostics and health management of industrial equipment, holding significant implications for enhancing the availability of industrial e...
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We demonstrate 1.0-Pb/s CPRI-equivalent rate fronthaul with 1024-QAM by using digital-analog radio-over-fiber and coherent detection based on modulator bias-induced residual carrier for phase tracking. The reach is ex...
We demonstrate 1.0-Pb/s CPRI-equivalent rate fronthaul with 1024-QAM by using digital-analog radio-over-fiber and coherent detection based on modulator bias-induced residual carrier for phase tracking. The reach is extended to 20-km SSMF with 4096-QAM and 80-km with 256-QAM, and laser linewidth can be relaxed to 3MHz.
Recently, the rapid development of metasurface facilitates the growth of extremely large-scale antenna arrays, making the ultra-massive MIMO possible. In this paper, we study the codebook design and beam training for ...
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