Article
Engineering, Electrical & Electronic
Qiang Wu, Lei Gao, Shuai Qiu, Stefan Wabnitz, Ai Liu, Yulong Cao, Zhenghu Chang, Yuanjie Yu, Yu Long, Tao Zhu
Summary: In this paper, an all-optical polarization scrambler configuration based on a polarization beam splitting delayed fiber loop is proposed. The polarization scrambler operates in a chaotic regime by deteriorating the coherence of one beam and controlling the intensity ratio of two orthogonal beams. The effect of loop structure on polarization scrambling is tested using a narrow-linewidth laser and a commercial distributed feedback laser, and the dependence of scrambling speed and average degree of polarization on delay fiber length and wavelengths within the C-band is characterized. The performance of the proposed scrambler for scrambling modulated signals at 40 MHz and 6 GHz is also tested.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Computer Science, Information Systems
Enjian Bai, Xue-qin Jiang, Yun Wu
Summary: In this paper, a high-speed privacy amplification algorithm is proposed, which saves hardware memory and improves key randomness performance by optimizing the Toeplitz matrix structure and using a block-iterative structure hash function for secure key generation. The algorithm adopts multiple small Toeplitz matrices to compress the negotiated key, dividing it into small blocks for modular addition operations, demonstrating memory-saving and fast running advantages. Evaluation through NIST randomness test and avalanche effect test shows the algorithm's favorable performance.
Article
Optics
Jiabing Lu, Zesheng Lv, Xinjia Qiu, Shiquan Lai, Hao Jiang
Summary: A simply structured n-AlGaN/AlN phototransistor with a self-depleted full channel is reported, showing high gain, fast response, and high detection capability, making it promising for various UV detection applications.
PHOTONICS RESEARCH
(2022)
Article
Quantum Science & Technology
Shenshen Yang, Zhilei Yan, Qing Lu, Hongzhao Yang, Zhenguo Lu, Xiangyang Miao, Yongmin Li
Summary: In this paper, a complete hardware acceleration scheme for the multidimensional reconciliation sender module in CV-QKD systems was designed and implemented using FPGA. The efficiency, frame error rate, and throughput of the system were significantly improved, paving the way for miniaturization and integration of CV-QKD systems.
QUANTUM INFORMATION PROCESSING
(2023)
Article
Quantum Science & Technology
Zhonghui Li, Kaiping Xue, Qidong Jia, Jian Li, David S. L. Wei, Jianqing Liu, Nenghai Yu
Summary: This paper proposes a cluster-based quantum key distribution network structure to address the problems of key distribution distance extension and concurrent key agreements between multiple QKD nodes. By organizing QKD nodes into clusters and connecting them through a backbone network, the design enables long-range QKD through entanglement swapping in the backbone network, while the master-slave structure of the clusters enhances the performance of the cluster-based QKD network.
QUANTUM INFORMATION PROCESSING
(2022)
Article
Engineering, Mechanical
Yigong Yang, Pei Zhou, Penghua Mu, Nianqiang Li
Summary: This paper presents the first numerical implementation of photonic reservoir computing based on a spin VCSEL. The proposed system demonstrates fast response and has the potential to achieve high-speed information processing and lower power consumption.
NONLINEAR DYNAMICS
(2022)
Article
Optics
H. Y. Wang, S. C. Wang, B. C. Wang, X. K. Zhan, Y. S. Bao, Z. Y. Li
Summary: A novel scheme based on OLPC is proposed to retrieve and preserve arbitrary polarization states at uniform high speed, breaking through the limitations of traditional CLPC. Experimental results demonstrate the effectiveness of the scheme in achieving arbitrary SOPs.
Article
Computer Science, Information Systems
Yekai Lu, Enjian Bai, Xue-qin Jiang, Yun Wu
Summary: In this paper, a Cellular Automata-based privacy amplification algorithm is proposed to improve the speed of key distribution. The algorithm generates secure keys of arbitrary length through block iteration and utilizes the property of Cellular Automata to carry out bit operations for multiple negotiation keys simultaneously, resulting in quick key compression. The algorithm demonstrates fast key generation speed, high real-time performance, and good randomness.
Article
Optics
Xiaoqian Wang, Kean Zhu, Kaihua Zhu, Boyuan Li, Dong Shen, Zhi-gang Zheng
Summary: A simple and compact polarimeter using two electrically controlled liquid-crystal variable retarders (LCVRs) and a linear polarizer is demonstrated. It analyzes the intensity variation of the modulated output light based on a computational algorithm. A proof-of-concept prototype is presented, mounted onto a power meter or a CMOS camera for data collection. The polarimetric measurement for the spatial variant polarization states of light is verified, suggesting the possibility of a resolution-lossless polarimeter. Therefore, this proposed method provides a cost-effective way to realize a compact polarimeter in polarization optics.
Article
Physics, Multidisciplinary
Tianyi Wu, Qing Pan, Chushan Lin, Lei Shi, Shanghong Zhao, Yijun Zhang, Xingyu Wang, Chen Dong
Summary: This study investigates the polarization effects in free-space QKD and proposes a method to estimate transmittance and misalignment error using the Huygens-Fresnel principle and cross-spectral density matrix. Numerical simulations demonstrate that maintaining good beam coherence properties can effectively mitigate the polarization effect caused by turbulence.
Article
Engineering, Electrical & Electronic
Wei Liu, Jiawen Liao, Hongjun Cai, Yu Yu, Xinliang Zhang
Summary: This paper presents a novel integrated polarization stabilizer with a small footprint and fast response time. The stabilizer can track light with arbitrary polarization states in one-time manipulation and convert most of the light to horizontal linear polarization.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Mathematics, Applied
Ramesh Kolluru, N. V. Raghavendra, S. V. Raghurama Rao, G. N. Sekhar
Summary: The study aims to develop simple algorithms to address the numerical simulation issues related to the hyperbolic nonlinear convection terms in compressible fluid flows. By utilizing central schemes with smart diffusion mechanisms and satisfying Rankine-Hugoniot conditions and generalized Riemann invariants, two algorithms have been successfully developed to avoid numerical shock instabilities. Both algorithms are robust in avoiding shock instabilities, accurately capture contact discontinuities, do not require wave speed corrections, and are independent of the eigenstructure of the underlying hyperbolic parts of the systems.
APPLIED MATHEMATICS AND COMPUTATION
(2022)
Article
Engineering, Electrical & Electronic
Gaolu Zhang, Zhizun Zhao, Jincheng Dai, Shanglin Yang, Xin Fu, Lin Yang
Summary: Private and secure communication is crucial for government and individual activities. Traditional public-key cryptography is at risk due to the development of quantum computing, while quantum key distribution provides an absolutely secure solution. This study proposes a simplified and reconfigurable silicon photonics encoder and experimentally demonstrates its performance in high-speed quantum key distribution.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Quantum Science & Technology
Alessia Scriminich, Giulio Foletto, Francesco Picciariello, Andrea Stanco, Giuseppe Vallone, Paolo Villoresi, Francesco Vedovato
Summary: This study presents a comprehensive model for evaluating the performance of a free-space ground-to-ground quantum key distribution system based on the efficient-BB84 protocol. The model takes into account various factors such as atmospheric channel, telescope design, quantum source and detector parameters, and provides a set of requirements and optimal design choices for a QKD system under specific channel conditions. The study highlights the importance of considering channel fluctuation statistics in correctly estimating the saturation rate of single-photon detectors.
QUANTUM SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Zesheng Lv, Zhongkun Liao, Hao Jiang
Summary: Visible-light heterojunction phototransistors were fabricated with high responsivity, speed, and bias-controlled spectral response, showing bias-controlled wavelength selectivity without the need for an optical filter.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Physics, Applied
Alberto Boaron, Boris Korzh, Raphael Houlmann, Gianluca Boso, Charles Ci Wen Lim, Anthony Martin, Hugo Zbinden
JOURNAL OF APPLIED PHYSICS
(2016)
Article
Physics, Multidisciplinary
M. O. Renou, D. Rosset, A. Martin, N. Gisin
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2017)
Article
Physics, Multidisciplinary
Anthony Martin, Thiago Guerreiro, Alexey Tiranov, Sebastien Designolle, Florian Frowis, Nicolas Brunner, Marcus Huber, Nicolas Gisin
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Applied
Jonatan Bohr Brask, Anthony Martin, William Esposito, Raphael Houlmann, Joseph Bowles, Hugo Zbinden, Nicolas Brunner
PHYSICAL REVIEW APPLIED
(2017)
Article
Physics, Applied
Davide Rusca, Alberto Boaron, Fadri Grunenfelder, Anthony Martin, Hugo Zbinden
APPLIED PHYSICS LETTERS
(2018)
Article
Physics, Applied
Alberto Boaron, Boris Korzh, Raphael Houlmann, Gianluca Boso, Davide Rusca, Stuart Gray, Ming-Jun Li, Daniel Nolan, Anthony Martin, Hugo Zbinden
APPLIED PHYSICS LETTERS
(2018)
Article
Physics, Multidisciplinary
Alberto Boaron, Gianluca Boso, Davide Rusca, Cedric Vulliez, Claire Autebert, Misael Caloz, Matthieu Perrenoud, Gaetan Gras, Felix Bussieres, Ming-Jun Li, Daniel Nolan, Anthony Martin, Hugo Zbinden
PHYSICAL REVIEW LETTERS
(2018)
Article
Optics
Peter C. Strassmann, Anthony Martin, Nicolas Gisin, Mikael Afzelius
Article
Optics
Farid Samara, Anthony Martin, Claire Autebert, Maxim Karpov, Tobias J. Kippenberg, Hugo Zbinden, Rob Thew
Article
Optics
Florian Kaiser, Panagiotis Vergyris, Anthony Martin, Djeylan Aktas, Marc P. De Micheli, Olivier Alibart, Sebastien Tanzilli
Article
Optics
Davide Rusca, Alberto Boaron, Marcos Curty, Anthony Martin, Hugo Zbinden
Article
Quantum Science & Technology
F. Monteiro, E. Verbanis, V. Caprara Vivoli, A. Martin, N. Gisin, H. Zbinden, R. T. Thew
QUANTUM SCIENCE AND TECHNOLOGY
(2017)
Article
Optics
Bruno Sanguinetti, Giulia Traverso, Jonathan Lavoie, Anthony Martin, Hugo Zbinden
Article
Optics
Denis Rosset, Anthony Martin, Ephanielle Verbanis, Charles Ci Wen Lim, Rob Thew
