Article
Physics, Multidisciplinary
Ling -Jun Kong, Yifan Sun, Furong Zhang, Jingfeng Zhang, Xiangdong Zhang
Summary: As an important imaging technique, holography has been realized with different physical dimensions of light, including polarization, wavelength, and time. Recently, quantum holography has been demonstrated with polarization entangled state, showing advantages of high robustness and enhanced spatial resolution. However, the capacity of quantum holography is limited due to the two-dimensional degree of freedom of polarization. In this study, we propose a method to achieve high-dimensional quantum holography using high-dimensional orbital angular momentum (OAM) entanglement. Proof-of-principle experiments with four- and six-dimensional OAM entangled states validate the feasibility of our idea and demonstrate high robustness to classical noise. Furthermore,a high-dimensional quantum holography can greatly improve the security level of holographic imaging encryption system.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Applied
Heng Wang, Shixing Yu, Na Kou, Zhao Ding, Zhengping Zhang
Summary: This Letter presents a cylindrical conformal holographic impedance metasurface for orbital angular momentum (OAM) generation. The conformal holographic metasurface is designed by establishing the element library and deducing the formula of holographic tensor impedance modulation. The feasibility of the scheme is verified by simulations and experiments, and the results are in good agreement with theoretical analysis. The efficient generation of OAM vortex wave energy by the cylindrical conformal impedance metasurface provides a reference for OAM communication and vortex radars with conformal devices.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Jie Li, Chenglong Zheng, Jitao Li, Guocui Wang, Jingyu Liu, Zhen Yue, Xuanruo Hao, Yue Yang, Fuyu Li, Tingting Tang, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: A new method for terahertz wavefront shaping with multi-channel polarization conversion via all-silicon metasurface is proposed in this paper. By superimposing the responses of two types of meta-atoms, several typical polarization states for linearly polarized waves can be efficiently evolved, providing a new idea for the design of terahertz multi-functional metadevices.
PHOTONICS RESEARCH
(2021)
Article
Multidisciplinary Sciences
Ali Ali, Mohsen Khalily, Tim Brown, Rahim Tafazolli
Summary: This article investigates the unexplored potentials of vortices or orbital angular momentum (OAM) beams using the low-cost and high-gain dielectric reflectarray antennas (RAs) at the terahertz band. It proposes a paradigm to enable 3D beam-steering or OAM multiplexing by a single structure via tilted OAM beams. The proposed paradigm can be utilized to produce RAs with beam-steering or OAM multiplexing capabilities as candidates for THz indoor communications.
Article
Physics, Applied
Yan Wang, Shaohe Li, Hui Wang, Longcheng Feng, Bowen Tan, Yihui Tan, Runfeng Su, Jingbo Wu, Caihong Zhang, Biaobing Jin, Jian Chen, Peiheng Wu
Summary: This study demonstrates a broadband, ultrathin, and efficient metasurface-based asymmetric transmission and wavefront manipulation method in the terahertz region, which provides a promising route for applications such as information encryption, THz wireless communication, and spectroscopy.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Mikael Ghadimi Nassiri, Gediminas Seniutinas, Christian David, Saulius Juodkazis, Etienne Brasselet
Summary: The study introduces a novel optical device design that enables independent control of orbital angular momentum across multiple spectral channels. The design demonstrates superior performance in terms of spectral vortex purity, handling high photon flux, and orbital angular momentum diversity across the spectrum. These results inspire further development of metasurface-based integrated spin-orbit photonics technologies.
APPLIED PHYSICS LETTERS
(2021)
Article
Optics
Junliang Jia, Kepeng Zhang, Guangwei Hu, Maping Hu, Tong Tong, Quanquan Mu, Hong Gao, Fuli Li, Cheng-Wei Qiu, Pei Zhang
Summary: A passive polarization-selective device is proposed in this study to generate cylindrical vector beams (CVBs) and simplify the generation process. By reversing the topological charges of orbital angular momentum based on a polarization-selective Gouy phase, CVBs with arbitrary topological charges can be generated by adjusting only the input light. This novel device has great potential for integrated quantum and classical optical experimental setups.
PHOTONICS RESEARCH
(2021)
Article
Multidisciplinary Sciences
Xinglin Zeng, Philip St J. Russell, Christian Wolff, Michael H. Frosz, Gordon K. L. Wong, Birgit Stiller
Summary: This study reports a light-driven nonreciprocal isolation system for optical vortex modes based on topology-selective stimulated Brillouin scattering (SBS) in chiral photonic crystal fiber. The experimental results show a vortex isolation of 22 decibels (dB), which is at the state of the art in fundamental mode isolators using SBS. This device may find applications in optical communications, fiber lasers, quantum information processing, and optical tweezers.
Article
Optics
V. E. Lembessis, K. Koksal, J. Yuan, M. Babiker
Summary: In this study, the optical dipole potential energy of a two-level atom interacting with a circularly polarized Laguerre-Gaussian laser beam of small waist is examined. The presence of a longitudinal electric field component in the beam leads to the appearance of a chiral term in the optical dipole potential energy. A bi-chromatic vortex interaction scheme is proposed to achieve a fully chiral optical dipole potential.
Article
Physics, Applied
Shi-Wang Fan, Wen-Qi Wang, Hao-Wen Dong, Jinxi Liu, Hao-Bo Qi, Yue-Sheng Wang
Summary: The study proposes a broadband acoustic metasurface capable of generating acoustic vortices with orbital angular momentum. Through optimization design, the metasurface achieves high-efficiency transmission in a wide frequency range. This breakthrough has significant implications for the development of devices such as acoustic tweezers, antennas, and spanners.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Jianhua Lin, Chang Chen, Jun Ding, Shuo Wang, Weidong Chen
Summary: This study proposes a strategy for generating multiple compact vortex beams with a single-layer reflective metasurface, offering new possibilities in the field of communications. By designing a dual-frequency metasurface, the generation of four compact vortex beams with different OAM modes at 9 and 13 GHz frequencies was successfully achieved.
APPLIED PHYSICS LETTERS
(2021)
Article
Optics
Xiaodong Wu, Hailin Cao, Junhui Peng, Zhenya Meng
Summary: This study proposes a solution for addressing bandwidth, orbital-angular momentum divergence, and mode purity issues in the terahertz domain, and compares the performance of different lattice types, with concentric ring lattice demonstrating the best performance.
Article
Materials Science, Multidisciplinary
Chengtian Song, Mengqian Deng, Xiaowen Wang, Yonghui Jiao, Bohu Liu
Summary: With the development of high-speed THz communications, this study proposes a reflective broadband metasurface that harnesses the orbital angular momentum (OAM) of electromagnetic waves. Through quantitative analysis of the metasurface elements, a reflective broadband element surface array with an ordered arrangement of 3-bit elements is designed. The simulation results demonstrate that the metasurface structure can efficiently convert linearly polarized waves into vortex beams with an efficiency exceeding 85% and achieve high-purity OAM beam acquisition. Moreover, the metasurface structure is simple to implement and can be easily integrated with photoelectric circuits, making it ideal for ultrahigh-speed THz communications.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Optics
Di Zhang, Yang Chen, Shengchao Gong, Wei Wu, Wei Cai, Mengxin Ren, Xifeng Ren, Shuang Zhang, Guangcan Guo, Jingjun Xu
Summary: This study reports an all-optical dynamic modulation of photonic quantum states using a nonlinear metasurface. By tuning the properties of the metasurface, the transmission efficiency and phase delay of photons were controlled, effectively manipulating the entangled state. This work enriches the application of metasurfaces in quantum optics and makes them more practical.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Optics
Peng Xu, Kunyi Zhang, Haixia Liu, Ruijie Li, Long Li
Summary: This paper proposes a dual-band metasurface that generates multiple orbital angular momentum beams independently in full polarizations. The metasurface can be used in various applications such as wireless communication, target detection, and security encryption.
Article
Physics, Applied
Chao Liu, Zhe Qin, Yongfeng Li, Tonghao Liu, Jiafu Wang, Shaobo Qu
Summary: In this paper, a low RCS TCDA based on a novel FSPC is proposed. The FSPC structure consists of a polarization conversion metasurface and a band-pass frequency selective surface. The coding sequence of FSPC is obtained using simulated annealing algorithm for RCS reduction. The co-design of TCDA with FSPC is presented and the radiation performance meets the design requirements. Measurement results show significant reflection reduction from 15 GHz to 21 GHz compared with a metallic plane of the same size, and the simulated and measured radiation patterns agree well.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Computer Science, Artificial Intelligence
Jie Lai, Xiaodan Wang, Qian Xiang, Jian Wang, Lei Lei
Summary: This study proposes a novel deep learning algorithm for classification tasks with label information. By introducing the Fisher criterion, the algorithm is able to learn more discriminative abstract features, resulting in better performance and robustness in classification.
COMPLEX & INTELLIGENT SYSTEMS
(2023)
Article
Physics, Multidisciplinary
Zhe Qin, Yongfeng Li, He Wang, Chenchen Li, Chao Liu, Zhibiao Zhu, Qi Yuan, Jiafu Wang, Shaobo Qu
Summary: The functional versatility and flexibility of multifunctional metasurfaces are significant for various applications. This study proposes an active programmable coding metasurface that integrates transmission and reflection control of polarized electromagnetic waves in real time.
ANNALEN DER PHYSIK
(2023)
Article
Engineering, Electrical & Electronic
Dou Tian, Amin Kianinejad, Ting Shi, Chen Guo, Jiafu Wang, Anxue Zhang
Summary: A compact dual-band high-efficiency antenna based on spoof surface plasmon polaritons (SSPPs) is proposed in this article, which effectively excites both the TM10 mode and the LC resonant mode. The antenna achieves compact size and high radiation efficiency due to the high field confinement and effective refractive index of SSPPs. A reliable circuit model is proposed for the antenna and a prototype is fabricated and measured. The proposed dual-band antenna shows high total efficiencies and has potential applications in wireless communication systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Physics, Applied
Tianshuo Qiu, Weihan Li, Jiafu Wang, Jianqi Wang, Qiang An, Bingyang Liu, Yangfan Hou, Juanna Jiang, Wenxuan Tang, Ziru Cheng, Shaobo Qu
Summary: A method of achieving asymmetric transmission is proposed by exploiting the direction-dependent absorption of spoof surface plasmon polaritons (SSPPs). By combining trapezoidal wire arrays as absorbers with cutting metal wires as polarization rotators, the metamaterial exhibits different properties depending on the incident wave direction, enabling asymmetric transmission. The conversion of incident waves to SSPPs is efficiently achieved by trapezoidal wire arrays, while the propagation and absorption of SSPPs can be controlled by engineering the spatial dispersion of k-vector. The polarization rotation performance can be customized by changing the length of cutting metal wires. The study demonstrates the effectiveness of the proposed method, providing design flexibility and efficiency for asymmetric transmission.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Physics, Applied
Bingyue Qu, Yongqiang Pang, Jiafu Wang, Xinmin Fu, Hongyu Shi, Luyi Wang, Anxue Zhang, Zhuo Xu
Summary: This paper proposes a wideband low-profile top-loaded patch monopole antenna based on surface current engineering. By loading inductive vias on the outermost rings and connecting them to the ground, the low-frequency resonance can be enhanced, achieving antenna miniaturization and bandwidth enhancement. The method provides a path for antenna design in low-profile ultra-wideband applications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Optics
Tonghao Liu, Yueyu Meng, Jiafu Wang, Hua Ma, Ruichao Zhu, Chao Liu, Weihan Li, Zuntian Chu, Sai Sui, Tianshuo Qiu, Wenxuan Tang, Shaobo Qu
Summary: Programmable coding metasurfaces (PCMs) provide a real-time reconfigurable platform for implementing customized functions. This article proposes an appealing PCM strategy that enables tunable functions in co-polarized reflection channels of orthogonal circularly polarized waves and in co-polarized and cross-polarized reflection channels of orthogonal linearly polarized waves.
PHOTONICS RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Tonghao Liu, Yueyu Meng, Jiafu Wang, Hua Ma, Hongya Chen, Xinmin Fu, Ruichao Zhu, Chao Liu, Yajuan Han, Weihan Li, Wenxuan Tang, Shaobo Qu
Summary: Achieving the conversion from surface waves to propagating waves is a long-standing interest. We propose a series of strategies to achieve dual-channel surface wave (SWs) directional radiation with customizable intensity and switchable pattern. Our metadevices based on phase modulation and loaded with resistors or PIN diodes show unprecedented flexibility in regulating SWs directional radiation and have enormous potential in engineering applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Chang Ding, Yudeng Wang, Junxiang Zhou, Huilin Mu, Yajuan Han, Fanyi Meng, Jiafu Wang
Summary: Liquid crystals with tunable dielectric properties in the microwave frequency band are of great significance for design of reconfigurable microwave devices. This article proposes a method for characterizing the dielectric properties of liquid crystals based on epsilon-near-zero metamaterials. The method involves designing a measurement device, integrating biased circuits and preconditioned alignments, and controlling the temperature of the liquid crystals. The effectiveness of the method is verified through experiments.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Zuntian Chu, Tiefu Li, Jiafu Wang, Yajuan Han, Ruichao Zhu, Tiejun Cui, Shaobo Qu
Summary: By utilizing the synergy of multimechanism resonances, this article proposes a method to achieve electromagnetic windows (EMWs) that enable broadband transmissions of both TM-and TE-polarized waves in an ultrawide range of incident angles. The proposed EMW utilizes Fano resonance and Drude resonances to expand the bandwidth for TE-polarization and suppress adverse influences of the parasitic Lorentz resonance for TM-polarization, respectively. Experimental validation confirms the ultrawide-angle broadband functionalities of this EMW, which can have wide applications in radar, communication, and imaging systems.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2023)
Article
Physics, Applied
Yajuan Han, Jiafu Wang, Xinmin Fu, Hongya Chen, Chang Ding, Shaobo Qu
Summary: In this paper, the electromagnetic properties of tightly coupled spoof surface plasmon polariton (SSPP) modes and a slender broadside antenna based on the tightly coupled SSPP are investigated and proposed. The compactness and miniaturization of microwave devices are favored by the tight confinement of TC-SSPP modes around the slender structure. A prototype of the proposed antenna was designed, fabricated, and measured, with both simulated and measured results verifying the design.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Optics
Zuntian Chu, Tonghao Liu, Tiefu Li, Jiachen Ma, Ruichao Zhu, Huiting Sun, Yuxiang Jia, Yajuan Han, Jiafu Wang
Summary: Metasurfaces composed of subwavelength structure arrays provide a powerful platform for generating complicated electromagnetic fields and manipulating wavefronts. This study proposes a vectorial hologram based on meta-particles, which allows encoding of arbitrary polarization and integration of reconstructed patterns. Multiple holograms were fabricated and characterized, demonstrating the versatility of this approach.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Ruichao Zhu, Bo Feng, Jiafu Wang, Yuxiang Jia, Junxiang Zhou, Yajuan Han, Hong Zhang, Cuilian Xu, Hongya Chen, Jinming Jiang, Shaobo Qu
Summary: In this work, a high-temperature flexible metasurface framework is proposed that can simultaneously achieve microwave polarization rotation and low infrared emissivity. The framework is verified by fabricating and measuring a high-temperature resistant multi-spectrum compatible flexible metasurface, which can effectively work up to 300 degrees C. The metasurface achieves more than 90% orthogonal polarization rotation efficiency in the frequency range of 5.2-7.5 GHz for microwaves, and reduces the infrared emissivity to 0.22 in the wavelength range of 3-14 μm by designing the metasurface pattern with a metallic filling ratio of 84.42%.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Ruichao Zhu, Jiafu Wang, Chang Ding, Yajuan Han, Yuxiang Jia, Sai Sui, Tianshuo Qiu, Zuntian Chu, Hongya Chen, Jun Wang, Bo Feng, Shaobo Qu
Summary: The continuous increase in communication capacity requires improved transmission efficiency. Conventional repeaters are unable to accommodate sudden appearances of receiving devices. In this study, an adaptively reconfigurable multi-beam reflective metasurface is proposed for signal transmission. The metasurface, designed with varactor diodes, is capable of dynamically switching between multiple beams based on detection information. The fabricated repeater verifies the effectiveness of the design. This work sheds light on the potential applications of intelligent metasurfaces in communications and smart homes.