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Silicon Photonics 630-Gb/s Complementary Polarization-Diversity Coherent Receiver with 9-Mrad/s Polarization Tracking Speed for Self-Coherent Homodyne Detection

Silicon Photonics 630-Gb/s Complementary Polarization-Divers...

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optical Fiber {1. (OFC) Conference

作者： Honglin Ji Zhen Wang Xingfeng Li Jingchi Li Ranjith Rajasekharan Unnithan Weisheng Hu Yikai Su William Shieh The University of Melbourne VIC Australia Peng Cheng Laboratory Shenzhen China State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

ISBN: (纸本)9781557524669

We demonstrate the first on-chip complementary polarization-diversity coherent receiver (C-PDCR) for rapid polarization tracking of remote LO. Based on electronic MIMO DSP, the polarization tracking speed can reach 9 Mrad/s with negligible performance degradation for a 70-Gbaud dual-polarization (DP) PCS-64QAM signal with 630-Gb/s data rate (net rate 485 Gb/s). © 2022 The Author(s)

关键词： Degradation Receivers Silicon photonics optical fiber {1. System-on-chip Electromagnetics MIMO communication

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Wavelength-Division-Multiplexed Transmission and Dispersion Compensation Enabled by Soliton Microcombs and Cascaded Microrings

Wavelength-Division-Multiplexed Transmission and Dispersion ...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Yuanbin Liu Hongyi Zhang Jiacheng Liu Liangjun Lu Jiangbing Du Yu Li Zuyuan He Jianping Chen Linjie Zhou Andrew W. Poon Department of Electronic Engineering State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Shanghai Jiao Tong University Shanghai China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu China Department of Electronic and Computer Engineering Photonic Device Laboratory The Hong Kong University of Science and Technology Clear Water Bay Hong Kong

We demonstrate wavelength-division-multiplexed data transmission and dispersion compensation of 25 Gb/s $\times 9$ on-off-keying signals over a 20-km singlemode fiber using an integrated single-soliton microcomb and... 详细信息

ISBN: (纸本)9798350369311

关键词： Solitons Lasers and electrooptics Wavelength division multiplexing Data communication Quantum cascade lasers Electro-optical waveguides optical fiber dispersion Fiber lasers

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Quantum neural compressive sensing for ghost imaging

arXiv

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arXiv 2025年

作者： Zhai, Xinliang Xiao, Tailong Huang, Jingzheng Fan, Jianping Zeng, Guihua State Key Laboratory of Advanced Optical Communication Systems and Networks Institute for Quantum Sensing and Information Processing Shanghai Jiao Tong University Shanghai200240 China Hefei National Laboratory Hefei230088 China Shanghai Research Center for Quantum Sciences Shanghai201315 China AI Lab Lenovo Research Beijing100094 China

Demonstrating the utility of quantum algorithms is a long-standing challenge, where quantum machine learning becomes one of the most promising candidate that can be resorted to. In this study, we investigate a quantum neural compressive sensing algorithm for ghost imaging to showcase its utility. The algorithm utilizes the variational quantum circuits to reparameterize the inverse problem of ghost imaging and uses the inductive bias of the physical forward model to perform optimization. To validate the algorithm’s effectiveness, we conduct optical ghost imaging experiments, capturing signals from objects at different physical sampling rates and detection signal-to-noise ratios. The experimental results show that our proposed algorithm surpasses conventional methods in both visual appearance and quantitative metrics, achieving {1.-of-the-art performance. Importantly, we observe that the quantum neural network, guided by prior knowledge of physics, effectively overcomes the challenge of barren plateau in the optimization process. The proposed algorithm demonstrates robustness against various quantum noise levels, making it suitable for near-term quantum devices. Our study leverages physical inductive bias guided variational quantum algorithm, underscoring the potential of quantum computation in tackling a broad range of optimization and inverse problems. Copyright © 2025, The Authors. All rights reserved.

关键词： Inverse problems

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Towards Heisenberg limit without critical slowing down via quantum reinforcement learning

arXiv

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arXiv 2025年

作者： Xu, Hang Xiao, Tailong Huang, Jingzheng He, Ming Fan, Jianping Zeng, Guihua State Key Laboratory of Advanced Optical Communication Systems and Networks Institute for Quantum Sensing and Information Processing Shanghai Jiao Tong University Shanghai200240 China Hefei National Laboratory Hefei230088 China Shanghai Research Center for Quantum Sciences Shanghai201315 China AI Lab Lenovo Research Beijing100094 China

Critical ground states of quantum many-body {1. have emerged as vital resources for quantum-enhanced sensing. Traditional methods to prepare these states often rely on adiabatic evolution, which may diminish the quantum sensing advantage. In this work, we propose a quantum reinforcement learning (QRL)-enhanced critical sensing protocol for quantum many-body {1. with exotic phase diagrams. Starting from product states and utilizing QRL-discovered gate sequences, we explore sensing accuracy in the presence of unknown external magnetic fields, covering both local and global regimes. Our results demonstrate that QRL-learned sequences reach the finite quantum speed limit and generalize effectively across {1. of arbitrary size, ensuring accuracy regardless of preparation time. This method can robustly achieve Heisenberg and super-Heisenberg limits, even in noisy environments with practical Pauli measurements. Our study highlights the efficacy of QRL in enabling precise quantum state preparation, thereby advancing scalable, high-accuracy quantum critical sensing. Copyright © 2025, The Authors. All rights reserved.

关键词： Reinforcement learning

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Ultra-Compact Silicon Mode Converter Based on a Zigzag-type Metasurface Structure

Ultra-Compact Silicon Mode Converter Based on a Zigzag-type ...

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optical Fiber {1. (OFC) Conference

作者： Hongwei Wang Yu He Lu Sun Yong Zhang Yikai Su State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

An ultra-compact silicon waveguide mode converter is proposed and experimentally demonstrated using an all-dielectric metasurface structure with zigzag-type periodic perturbations.

ISBN: (纸本)9781943580866

An ultra-compact silicon waveguide mode converter is proposed and experimentally demonstrated using an all-dielectric metasurface structure with zigzag-type periodic perturbations.

关键词： Perturbation methods Metasurfaces Silicon optical fiber {1. optical waveguides Periodic structures

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Broadband Power Coupling and Splitting in Photonic Thouless Pump systems

Broadband Power Coupling and Splitting in Photonic Thouless ...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Lu Sun Hongwei Wang Yong Zhang Yikai Su State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

By utilizing the topological transport property of Thouless pump, we experimentally demonstrate the broadband optical power coupling and splitting on the silicon photonic platform in the telecom band.

ISBN: (纸本)9781943580910

关键词： Couplings optical losses Laser theory Silicon photonics optical crosstalk optical pumping optical coupling

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Generation of Multiple Sharp Fano Resonances based on a Silicon Nanobeam-Microring Resonator

Generation of Multiple Sharp Fano Resonances based on a Sili...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Ruihuan Zhang Yu He Yong Zhang Yikai Su State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

A silicon nanobeam-microring resonator is experimentally demonstrated to generate periodic multiple sharp Fano resonances with an FSR of 8.44 nm. The extinction ratios of the Fano resonances are higher than 1. dB.

ISBN: (纸本)9781943580910

关键词： Extinction ratio Silicon Erbium Electrooptic effects

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Fano Resonance with Sharp Transmittance Slope Based on High-Q Factor Multi-Mode Micro-Ring Resonator

Fano Resonance with Sharp Transmittance Slope Based on High-...

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Asia communications and Photonics Conference and Exhibition (ACP)

作者： Yuan Yuan Ruihuan Zhang Yu He Yong Zhang Yikai Su State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

We propose a Fano resonance generator based on a multi-mode racetrack micro-ring resonator. A high slope rate of 321. dB/nm is obtained. The extinction ratio is ~ 1..6 dB.

ISBN: (纸本)9781665410953

We propose a Fano resonance generator based on a multi-mode racetrack micro-ring resonator. A high slope rate of 321. dB/nm is obtained. The extinction ratio is ~ 1..6 dB.

关键词： Q-factor Asia Extinction ratio Generators Sensors Photonics

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Fully Integrated Solid-state LiDAR Transmitter on a Multi-Layer Silicon-Nitride-on-Silicon Photonic Platform

Fully Integrated Solid-State LiDAR Transmitter on a Multi-La...

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optical Fiber {1. (OFC) Conference

作者： Weihan Xu Yuyao Guo Xinhang Li Chuxin Liu Liangjun Lu Jianping Chen Linjie Zhou State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Shanghai Jiao Tong University Shanghai China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu China

We demonstrated a LiDAR transmitter incorporating both a hybrid-integrated tunable external cavity laser and a high-resolution 2-D optical phased array beam-steerer on a tri-layer silicon-nitride-on-silicon photonic p... 详细信息

ISBN: (纸本)9781557524669

关键词： optical fibers Integrated optics Laser radar Solid lasers Adaptive optics System-on-chip optical transmitters

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Compact Silicon Mode Converter Using Fast Adiabatic-Evolution-Based Y-Junction with Wide Bandwidth

Compact Silicon Mode Converter Using Fast Adiabatic-Evolutio...

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Asia communications and Photonics Conference and Exhibition (ACP)

作者： Yichen Xu Yu He Zhen Wang Yong Zhang Weiqiang Xie Yikai Su State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

A broadband mode converter based on an asymmetric Y-junction is proposed and experimentally demonstrated. The device has a compact evolution length (<1. μm) and a wide bandwidth.

ISBN: (纸本)9781957171005

A broadband mode converter based on an asymmetric Y-junction is proposed and experimentally demonstrated. The device has a compact evolution length (<1. μm) and a wide bandwidth.

关键词： optical losses Wavelength measurement Measurement by laser beam Bandwidth Laser modes Loss measurement Silicon

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