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Your search keyword '"Ren, Zhi"' showing total 184 results
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184 results on '"Ren, Zhi"'

1. Three-Photon Polarization Entanglement of Green Light

Author

Lou, Yan-Chao, Ren, Zhi-Cheng, Chen, Chao, Wan, Pei, Zhu, Wen-Zheng, Wang, Jing, Xue, Shu-Tian, Dong, Bo-Wen, Ding, Jianping, Wang, Xi-Lin, and Wang, Hui-Tian

Subjects
Quantum Physics
Abstract

Recently, great progress has been made in the entanglement of multiple photons at various wavelengths and in different degrees of freedom for optical quantum information applied in diverse scenarios. However, multi-photon entanglement in the transmission window of green light under the water has not been reported yet. Here, by combining femtosecond laser based multi-photon entanglement and entanglement-maintaining frequency upconversion techniques, we successfully generate a green two-photon polarization-entangled Bell state and a green three-photon Greenberger-Horne-Zeilinger (GHZ) state, whose state fidelities are 0.893$\mathbf{\pm}$0.002 and 0.595$\mathbf{\pm}$0.023, respectively. Our result provides a scalable method to prepare green multi-photon entanglement, which may have wide applications in underwater quantum information., Comment: 8 pages, 4 figures

Published
2024
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2. Heralded High-Dimensional Photon-Photon Quantum Gate

Author

Liu, Zhi-Feng, Ren, Zhi-Cheng, Wan, Pei, Zhu, Wen-Zheng, Cheng, Zi-Mo, Wang, Jing, Shi, Yu-Peng, Xi, Han-Bing, Huber, Marcus, Friis, Nicolai, Gao, Xiaoqin, Wang, Xi-Lin, and Wang, Hui-Tian

Subjects
Quantum Physics
Abstract

High-dimensional encoding of quantum information holds the potential to greatly increase the computational power of existing devices by enlarging the accessible state space for fixed register size and by reducing the number of required entangling gates. However, qudit-based quantum computation remains far less developed than conventional qubit-based approaches, in particular for photons, which represent natural multi-level information carriers that play a crucial role in the development of quantum networks. A major obstacle for realizing quantum gates between two individual photons is the restriction of direct interaction between photons in linear media. In particular, essential logic components for quantum operations such as native qudit-qudit entangling gates are still missing for optical quantum information processing. Here we address this challenge by presenting a protocol for realizing an entangling gate -- the controlled phase-flip (CPF) gate -- for two photonic qudits in arbitrary dimension. We experimentally demonstrate this protocol by realizing a four-dimensional qudit-qudit CPF gate, whose decomposition would require at least 13 two-qubit entangling gates. Our photonic qudits are encoded in orbital angular momentum (OAM) and we have developed a new active high-precision phase-locking technology to construct a high-dimensional OAM beam splitter that increases the stability of the CPF gate, resulting in a process fidelity within a range of $ [0.64 \pm 0.01, 0.82 \pm 0.01]$. Our experiment represents a significant advance for high-dimensional optical quantum information processing and has the potential for wider applications beyond optical system., Comment: 14 pages, 7 figures

Published
2024

3. Manipulating magnetism and transport properties of EuCd$_2$P$_2$ with a low carrier concentration

Author

Chen, Xiyu, Wang, Ziwen, Zhou, Zhiyu, Yang, Wuzhang, Liu, Yi, Lu, Jia-Yi, Ren, Zhi, Cao, Guang-Han, Tafti, Fazel, Dong, Shuai, and Wang, Zhi-Cheng

Subjects
Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons
Abstract

Materials that exhibit strongly coupled magnetic order and electronic properties are crucial for both fundamental research and technological applications. However, finding a material that not only shows remarkable magnetoresistive responses but also has an easily tunable ground state remains a challenge. Here, we report successful manipulation of the magnetic and transport properties of EuCd$_2$P$_2$, which is transformed from an A-type antiferromagnet ($T_\mathrm{N}$ = 11 K) exhibiting colossal magnetoresistance into a ferromagnet ($T_\mathrm{C}$ = 47 K) with metallic behavior. The dramatic alteration results from a low hole concentration of $10^{19}$ cm$^{-3}$ induced by changing the growth conditions. Electronic structure and total energy calculations confirm the tunability of magnetism with a small carrier concentration for EuCd$_2$P$_2$. It is feasible to switch between the magnetic states by using field-effect to control the carrier density, thereby changing the magneto-electronic response. The controllable magnetism and electrical transport of EuCd$_2$P$_2$ make it a potential candidate for spintronics.

Published
2024
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4. Carrier-induced transition from antiferromagnetic insulator to ferromagnetic metal in the layered phosphide EuZn$_2$P$_2$

Author

Chen, Xiyu, Yang, Wuzhang, Lu, Jia-Yi, Zhou, Zhiyu, Ren, Zhi, Cao, Guang-Han, Dong, Shuai, and Wang, Zhi-Cheng

Subjects
Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons
Abstract

EuZn$_2$P$_2$ was reported to be an insulating antiferromagnet with $T_\mathrm{N}$ of 23.5 K. In this study, single crystals of EuZn$_2$P$_2$ exhibiting metallic behavior and a ferromagnetic order of 72 K ($T_\mathrm{C}$) are successfully synthesized via a salt flux method. The presence of hole carriers induced by the Eu vacancies in the lattice is found to be crucial for the drastic changes in magnetism and electrical transport. The carriers mediate the interlayer ferromagnetic interaction, and the coupling strength is directly related to $T_\mathrm{C}$, as evidenced by the linear dependence of $T_\mathrm{C}$ and the fitted Curie-Weiss temperatures on the Eu-layer distances for ferromagnetic Eu$M_2X_2$ ($M$ = Zn, Cd; $X$ = P, As). The ferromagnetic EuZn$_2$P$_2$ shows conspicuous negative magnetoresistance (MR) near $T_\mathrm{C}$, owing to strong magnetic scattering. The MR behavior is consistent with the Majumdar-Littlewood model, indicating that the MR can be enhanced by decreasing the carrier density. Our findings suggest that Eu$M_2X_2$ has highly tunable magnetism and charge transport, making it a promising material family for potential applications in spintronics.

Published
2024
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15. Study of the response of 10B-doped MCP to wide-energy range neutrons from eV to MeV

Author

Li, Qiang, Wang, Li-Jiao, Qiu, Xiang-Biao, Li, Jing-Wen, Xu, Wei, Li, Tao, Lin, Ze-Bin, Ning, Chang-Jun, Chen, Yong-Hao, Fan, Rui-Rui, Sun, Kang, Tang, Jing-Yu, Zhang, Rong, Jing, Han-Tao, Mei, Bo, An, Qi, Bai, Hao-Fan, Bai, Jiang-Bo, Bao, Jie, Cao, Ping, Chen, Qi-Ping, Chen, Zhen, Cui, Zeng-Qi, Fan, An-Chuan, Feng, Chang-Qing, Feng, Fan-Zhen, Gao, Ke-Qing, Gu, Min-Hao, Han, Chang-Cai, Han, Zi-Jie, He, Guo-Zhu, He, Yong-Cheng, Hong, Yang, Hu, Yi-Wei, Huang, Han-Xiong, Jia, Wei-Hua, Jiang, Hao-Yu, Jiang, Wei, Jiang, Zhi-Jie, Jin, Zheng-Yao, Kang, Ling, Li, Bo, Li, Chao, Li, Gong, Li, Jia-Wen, Li, Xiao, Li, Yang, Liu, Jie, Liu, Rong, Liu, Shu-Bin, Luan, Guang-Yuan, Qi, Bin-Bin, Ren, Jie, Ren, Zhi-Zhou, Ruan, Xi-Chao, Song, Zhao-Hui, Tan, Zhi-Xin, Tang, Sheng-Da, Wang, Peng-Cheng, Wang, Zhao-Hui, Wen, Zhong-Wei, Wu, Xiao-Guang, Wu, Xuan, Xie, Li-Kun, Yang, Yi-Wei, Yi, Han, Yu, Yong-Ji, Zhang, Guo-Hui, Zhang, Lin-Hao, Zhang, Mo-Han, Zhang, Qi-Wei, Zhang, Xian-Peng, Zhang, Yu-Liang, Zhang, Yue, Zhang, Zhi-Yong, Zhao, Mao-Yuan, Zhou, Lu-Ping, Zhou, Zhi-Hao, and Zhu, Ke-Jun

Published
2024
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16. Research on Multi-UAV Path Planning Driven by Multi-dynamic Mission Based on Navigation Vector Field Method

Author

Wang, Mengyang, Zhang, Dong, Ren, Zhi, Fu, Jinbo, Wang, Tinghui, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Tan, Kay Chen, Series Editor, and Fu, Song, editor

Published
2024
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17. Online Trajectory Planning Method for Improving Collaborative Localization Accuracy in UAV Swarm

Author

Fu, Jinbo, Zhang, Dong, Wang, Mengyang, Ren, Zhi, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Tan, Kay Chen, Series Editor, and Fu, Song, editor

Published
2024
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18. Review of UAV Swarm Collaborative Navigation

Author

Wang, Tinghui, Zhang, Dong, Ren, Zhi, Tang, Shuo, Du, Minglei, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Tan, Kay Chen, Series Editor, and Fu, Song, editor

Published
2024
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21. Nondestructive technique for identifying nuclides using neutron resonance transmission analysis at CSNS Back-n

Author

Tang, Sheng-Da, Chen, Yong-Hao, Tang, Jing-Yu, Fan, Rui-Rui, Li, Qiang, Li, Gong, Liu, Dong, Jin, Zheng-Yao, Cui, Xing-Zhu, Chen, Tian-Xiang, Yang, Yi-Wei, Liu, Rong, Yi, Han, Li, Yang, Yang, Zhen, An, Qi, Bai, Hao-Fan, Bai, Jiang-Bo, Bao, Jie, Cao, Ping, Chen, Qi-Ping, Chen, Zhen, Cui, Zeng-Qi, Fan, An-Chuan, Feng, Chang-Qing, Feng, Fan-Zhen, Gao, Ke-Qing, Gu, Min-Hao, Han, Chang-Cai, Han, Zi-Jie, He, Guo-Zhu, He, Yong-Cheng, Hong, Yang, Hu, Yi-Wei, Huang, Han-Xiong, Jia, Wei-Hua, Jiang, Hao-yu, Jiang, Wei, Jiang, Zhi-jie, Kang, Ling, Li, Bo, Li, Chao, Li, Jia-Wen, Li, Xiao, Liu, Jie, Liu, Shu-Bin, Luan, Guang-Yuan, Ning, Chang-Jun, Qi, Bin-Bin, Ren, Jie, Ren, Zhi-Zhou, Ruan, Xi-Chao, Song, Zhao-Hui, Sun, Kang, Tan, Zhi-Xin, Wang, Li-Jiao, Wang, Peng-Cheng, Wang, Zhao-Hui, Wen, Zhong-Wei, Wu, Xiao-Guang, Wu, Xuan, Xie, Li-Kun, Yu, Yong-Ji, Zhang, Guo-Hui, Zhang, Lin-Hao, Zhang, Mo-Han, Zhang, Qi-Wei, Zhang, Xian-Peng, Zhang, Yu-Liang, Zhang, Yue, Zhang, Zhi-Yong, Zhao, Mao-Yuan, Zhou, Lu-Ping, Zhou, Zhi-Hao, and Zhu, Ke-Jun

Published
2024
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49. Superconductivity and Charge-Density-Wave-Like Transition in Th2Cu4As5

Author

Liu, Shaohua, primary, Duan, Qingchen, additional, Li, Baizhuo, additional, Meng, Jiaojiao, additional, Yang, Wuzhang, additional, Liu, Yi, additional, Lin, Yi-Qiang, additional, Wu, Si-Qi, additional, Lu, Jiayi, additional, Bao, Jin-Ke, additional, Xiao, Yusen, additional, Zhao, Xinyu, additional, Mei, Yu-Xue, additional, Sun, Yuping, additional, Tan, Shugang, additional, Jing, Qiang, additional, Yu, Dan, additional, Zhong, Ruidan, additional, Chen, Yongliang, additional, Zhao, Yong, additional, Ren, Zhi, additional, Wang, Cao, additional, and Cao, Guang-Han, additional

Published
2024
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