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1,237 results on '"Qiu, Cheng"'

5. Single-cavity loss-enabled nanometrology

Author

Xu, Jipeng, Mao, Yuanhao, Li, Zhipeng, Zuo, Yunlan, Zhang, Jianfa, Yang, Biao, Xu, Wei, Liu, Ning, Deng, Zhi Jiao, Chen, Wei, Xia, Keyu, Qiu, Cheng-Wei, Zhu, Zhihong, Jing, Hui, and Liu, Ken

Published
2024
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29. Wearable and interactive multicolored photochromic fiber display

Author

Li, Pan, Wang, Yuwei, He, Xiaoxian, Cui, Yuyang, Ouyang, Jingyu, Ouyang, Ju, He, Zicheng, Hu, Jiayu, Liu, Xiaojuan, Wei, Hang, Wang, Yu, Lu, Xiaoling, Ji, Qian, Cai, Xinyuan, Liu, Li, Hou, Chong, Zhou, Ning, Pan, Shaowu, Wang, Xiangru, Zhou, Huamin, Qiu, Cheng-Wei, Lu, Yan-Qing, and Tao, Guangming

Published
2024
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33. Scalable multiparty steering based on a single pair of entangled qubits

Author

Pepper, Alex, Baker, Travis. J., Wang, Yuanlong, Song, Qiu-Cheng, Shalm, Lynden. K., Varma, Varun. B., Nam, Sae Woo, Tischler, Nora, Slussarenko, Sergei, Wiseman, Howard. M., and Pryde, Geoff. J.

Subjects
Quantum Physics, Physics - Optics
Abstract

The distribution and verification of quantum nonlocality across a network of users is essential for future quantum information science and technology applications. However, beyond simple point-to-point protocols, existing methods struggle with increasingly complex state preparation for a growing number of parties. Here, we show that, surprisingly, multiparty loophole-free quantum steering, where one party simultaneously steers arbitrarily many spatially separate parties, is achievable by constructing a quantum network from a set of qubits of which only one pair is entangled. Using these insights, we experimentally demonstrate this type of steering between three parties with the detection loophole closed. With its modest and fixed entanglement requirements, this work introduces a scalable approach to rigorously verify quantum nonlocality across multiple parties, thus providing a practical tool towards developing the future quantum internet.

Published
2023
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39. Simultaneously sorting vector vortex beams of 120 modes

Author

Jia, Qi, Zhang, Yanxia, Shi, Bojian, Li, Hang, Li, Xiaoxin, Feng, Rui, Sun, Fangkui, Cao, Yongyin, Wang, Jian, Qiu, Cheng-Wei, and Ding, Weiqiang

Subjects
Physics - Optics
Abstract

Polarization (P), angular index (l), and radius index (p) are three independent degrees of freedom (DoFs) of vector vortex beams, which have been widely used in optical communications, quantum optics, information processing, etc. Although the sorting of one DoF can be achieved efficiently, it is still a great challenge to sort all these DoFs simultaneously in a compact and efficient way. Here, we propose a beam sorter to deal with all these three DoFs simultaneously by using a diffractive deep neural network (D$^2$NN) and experimentally demonstrated the robust sorting of 120 Laguerre-Gaussian (LG) modes using a compact D$^2$NN formed by one spatial light modulator and one mirror only. The proposed beam sorter demonstrates the great potential of D$^2$NN in optical field manipulation and will benefit the diverse applications of vector vortex beams.

Published
2022
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42. What are the underlying causes and dynamics of land use conflicts in metropolitan junction areas? A case study of the central Chengdu– Chongqing region in China

Author

Tian Junfeng, Wang Binyan, Qiu Cheng, and Wang Shijun

Subjects
Land use conflicts, Urban agglomerations, Administrative boundary, Land resources, Structural equation modeling (SEM), Central Chengdu–, Science (General), Q1-390, Geology, QE1-996.5
Abstract

Land use conflicts (LUCs), as a spatial manifestation of the conflicts in the human-land relationships, have a profound impact on regional sustainable development. For China’s metropolitan junction areas (MJAs), the existence of “administrative district economies” has made the issue of LUCs more prominent. Based on a case study of the central Chengdu–Chongqing region, we conducted an exploratory spatial data analysis of the evolutionary process of regional LUCs. Furthermore, structural equation modeling was utilized to analyze the dynamic mechanism of LUCs in MJAs, with a particular emphasis on exploring the influences of administrative boundary. The results showed that from 2010 to 2020, LUCs in the central Chengdu–Chongqing region continued to worsen, and the spatial process conflict and spatial structure conflict indices increased by more than 30.0%. The intensification of LUCs in the central Chengdu–Chongqing region from 2010 to 2020 was mainly the result of the deterioration of conflicts in evaluation units with low conflict levels. LUCs in China’s metropolitan areas generally presented a circular gradient distribution, weakening from the core to the periphery, but there were some strong isolated conflict zones in the outer regions. LUCs in China’s MJAs were the result of interactions among multiple factors, e.g., natural environment, socio-economic development, policy and institutional processes, and administrative boundary effects. Administrative boundary affected the flow of socio-economic elements, changing the supply-and-demand competition of stakeholders for land resources, consequently exerting an indirect influence on LUCs. This study advances the theory of the dynamic mechanism of LUCs, and provides theoretical support for the governance of these conflicts in transboundary areas.

Published
2024
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