Article
Physics, Multidisciplinary
Wen Zhen-Nan, Yi You-Gen, Xu Xiao-Wen, Guo Ying
Summary: This paper proposes an approach to improve the performance of continuous variable quantum teleportation (CVQT) system by using an embedded noiseless linear amplifier (NLA) to compensate for the degradation of entanglement caused by noise and loss in the actual environment. The simulation results show that the proposed scheme can improve the fidelity and transmission distance of the system, providing a feasible and effective method for practical applications of long-distance CVQT.
ACTA PHYSICA SINICA
(2022)
Article
Multidisciplinary Sciences
Hao Wu, Xu Liu, Hang Zhang, Xinchao Ruan, Ying Guo
Summary: This paper studies the attenuation effect of seawater on light using a model based on seawater chlorophyll concentration, and proposes a scheme to enhance the performance of CVQT under seawater channel using a noiseless linear amplifier. Simulation results show that the proposed scheme improves fidelity and maximum transmission distance compared to the original scheme.
Article
Optics
Shaoping Shi, Yajun Wang, Long Tian, Wei Li, Yimiao Wu, Qingwei Wang, Yaohui Zheng, Kunchi Peng
Summary: This article presents a fully connected continuous-variable quantum teleportation network architecture, where a squeezed state of light distributes entangled sideband modes to each communication link, offering potential for various tasks of quantum information processing.
LASER & PHOTONICS REVIEWS
(2023)
Article
Multidisciplinary Sciences
Mingjian He, Robert Malaney
Summary: In this study, a new CV-based teleportation protocol is explored to improve the transfer of hybrid entangled states. The modified protocol shows significant improvement over traditional CV teleportation for both DV qubits and CV qubits. Additionally, the use of non-Gaussian operations with quantum scissors provides the most improvement in loss tolerance.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Wei Zhao, Fu-qiang Wang, Yi-yu Mao, Hai Zhong, Chao Ding, Xin-chao Ruan
Summary: In this paper, a continuous-variable quantum digital signature protocol based on quantum teleportation is proposed and analyzed. Squeezed states are used to carry key and secret information of the teleported states transmitted through classical and entangled channels. The mean and modulation variance of the teleported quantum state are used to distinguish and order multibit information signatures. The fidelity and security analysis demonstrate the effectiveness and security of the proposed protocol.
RESULTS IN PHYSICS
(2023)
Article
Optics
Hui Guo, Na Liu, Hengxin Sun, Kui Liu, Jiangrui Gao
Summary: Optical spin-orbit coupling is investigated in the optical parametric downconversion process, and entangled vector vortex modes are experimentally generated. The spin-orbit quantum states are characterized on the quantum higher-order Poincare sphere, and the relationship of spin-orbit total angular momentum Stokes entanglement is demonstrated. These states have potential applications in high-dimensional quantum communication and multiparameter measurement.
Article
Optics
Ayan Patra, Rivu Gupta, Saptarshi Roy, Aditi Sen(De)
Summary: In this study, the concept of fidelity deviation is introduced in continuous-variable quantum teleportation, allowing better characterization of CV states by considering both fidelity and fidelity deviation. The performance of the teleportation protocol is also explored in different input scenarios, and the effects of noise on average fidelity and fidelity deviation are investigated.
Article
Chemistry, Multidisciplinary
Shengjie Xu, Yin Li, Yijun Wang, Yun Mao, Zhiyue Zuo, Xinchao Ruan, Ying Guo
Summary: Researchers proposed a novel noiseless attenuation scheme involving zero-photon catalysis operation to improve the performance of satellite-based quantum key distribution systems in the uplink. Numerical analysis showed that attenuation-optimized continuous-variable QKD outperformed traditional methods in extending the zenith angle allowance and improving communication time. Additionally, using attenuation optimization characteristics, the proposed scheme enhanced security bounds by reducing information available to eavesdroppers.
APPLIED SCIENCES-BASEL
(2021)
Article
Quantum Science & Technology
Zhennan Wen, Yougen Yi, Xiaowen Xu, Ying Guo
Summary: In this paper, a non-Gaussian approach using photon catalysis is proposed to improve the performance of continuous-variable quantum teleportation (CVQT). Numerical simulations show that this approach enhances the fidelity and maximal transmission distance of CVQT.
QUANTUM INFORMATION PROCESSING
(2022)
Article
Optics
Hemant K. Mishra, Samad Khabbazi Oskouei, Mark M. Wilde
Summary: In this paper, an analytical approach for determining optimal input states for continuous-variable (CV) unidirectional and bidirectional teleportation is detailed. The metric used to quantify performance is the energy-constrained channel fidelity between ideal and experimental teleportation. The paper proves that, under certain energy constraints, the optimal input state is a finite entangled superposition of twin-Fock states, and it is unique.
Article
Mathematics
Xinchao Ruan, Hang Zhang, Wenqi Peng, Hui Xian, Yiwu Zhu, Wei Zhao, Sha Xiong
Summary: This study proposes a scheme for achieving high-capacity quantum communication in atmospheric environments, using orbital angular momentum multiplexed continuous variable entangled states for free-space quantum teleportation. The entangled states are prepared through spontaneous four-wave mixing, and the mode selection for Bell-state measurement is achieved using balanced homodyne detection. The study demonstrates the advantage of enhancing system channel capacity through OAM multiplexing.
Article
Quantum Science & Technology
Jian Zhou, Leixin Wu, Yanyan Feng, Hui Li, Jinjing Shi, Ronghua Shi
Summary: In this paper, a modified four-state continuous variable quantum key distribution protocol is proposed by adding a hybrid linear amplifier to Bob's output. The hybrid linear amplifier can overcome the degradation of signal-to-noise ratio caused by deterministic linear amplifier during the amplification of quantum light states, and allows flexible control of the amplification coefficient and a finite heralding probability trade-off.
QUANTUM INFORMATION PROCESSING
(2023)
Article
Optics
Federico Centrone, Frederic Grosshans, Valentina Parigi
Summary: We studied continuous-variable graph states with regular and complex network shapes, and analyzed the relationship between the cost, the number of squeezed modes, and the topology. We provided an analytical formula to compute the experimental resources needed, and showed that increasing homodyne measurements can boost entanglement and enhance the efficiency of entanglement routing protocol.
Article
Quantum Science & Technology
Deepak, Arpita Chatterjee
Summary: We investigate continuous-variable quantum teleportation protocols using entangled displaced Fock states. It is found that displaced Fock states do not have an advantage in teleporting squeezed and coherent states. We also discuss the effects of decoherence on teleportation.
QUANTUM INFORMATION PROCESSING
(2022)
Article
Quantum Science & Technology
Bo-Han Wu, Zheshen Zhang, Quntao Zhuang
Summary: This paper introduces a CV quantum-repeater architecture based on CV quantum teleportation, which is assisted by the Gottesman-Kitaev-Preskill code to suppress physical noise. The designed CV quantum-repeater architecture significantly improves the performance of entanglement-assisted communication, target detection based on quantum illumination, and CV quantum key distribution.
QUANTUM SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Medicinal
Jingzhou Zhao, Xiaowen Xu, Maonan Wang, Liang Wang
DISSOLUTION TECHNOLOGIES
(2018)
Article
Materials Science, Multidisciplinary
Hengyue Li, Hui Guo, Keqing Huang, Biao Liu, Chujun Zhang, Xiaohua Chen, Xiaowen Xu, Junliang Yang
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2018)
Article
Materials Science, Multidisciplinary
Zhen Wang, Xiao-Wen Xu, Bing Zhang
Article
Chemistry, Analytical
Xiaowen Xu, Ying Liang, Pei He, Junliang Yang
Article
Physics, Applied
Xiaowen Xu, Zhuofang Liu, Pei He, Junliang Yang
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2019)
Article
Physics, Applied
Xiaowen Xu, Guanghui Han, Haoran Yu, Xiao Jin, Junliang Yang, Jian Lin, Changqi Ma
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2020)
Article
Physics, Applied
Xiaowen Xu, Meng Luo, Pei He, Junliang Yang
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2020)
Article
Engineering, Electrical & Electronic
Jiaye Xu, Yun Mao, Yuxin Chen, Xiaowen Xu, Ying Guo
Summary: This paper proposes a machine learning-assisted prediction method for continuous-variable quantum teleportation over satellite-ground channel. By applying the k-nearest neighbor algorithm and decision tree algorithm, the predicted parameters can reflect the actual results within an allowable range of error. Experimental results show that the ML-assisted prediction is consistent with the actual data when considering specific factors, demonstrating high identifying accuracy without increasing system complexity.
IEEE PHOTONICS JOURNAL
(2022)
