Article
Nanoscience & Nanotechnology
Jixiang Cai, Fei Zhang, Mingbo Pu, Yan Chen, Yinghui Guo, Ting Xie, Xingdong Feng, Xiaoliang Ma, Xiong Li, Honglin Yu, Xiangang Luo
Summary: This research verifies that chiral meta-atoms with high-fold rotational symmetries can produce the generalized PB phase. The use of an all-metallic configuration improves efficiency and bandwidth, and the performance is analyzed using an equivalent air waveguide. Four metadevices are experimentally demonstrated with a maximum efficiency exceeding 83%.
Article
Materials Science, Multidisciplinary
Weijin Chen, Qingdong Yang, Yuntian Chen, Wei Liu
Summary: The study shows that n-fold rotation symmetry is sufficient to ensure invariant backscattering, and the same principle applies to infinite periodic structures for reflection with simultaneous transmission invariance. In the presence of losses, additional reflection symmetries can be incorporated to ensure the invariance of transmission and absorption. These principles are protected by fundamental laws of reciprocity and parity conservation, independent of the optical or geometric parameters of photonic structures.
Article
Materials Science, Multidisciplinary
Qingrong Deng, Jianing Yang, Xiang Lan, Wenting Zhang, Hengyu Cui, Zhengwei Xie, Ling Li, Yijia Huang
Summary: Pancharatnam-Berry (PB) phase, as one of the main approaches to implement phase gradient in metasurfaces, has attracted enormous interest. The recently proposed generalized PB phase, which indicates that phase gradient could be achieved by high-order symmetry metallic meta atoms, can also be implemented in all-dielectric metasurfaces with higher efficiency. Functional devices are designed by merging generalized PB phase and propagation phase, and a detailed comparison between meta atoms with different rotational symmetries is conducted to illustrate the difference between classical and generalized PB phase.
RESULTS IN PHYSICS
(2023)
Article
Physics, Multidisciplinary
Ze-Guo Chen, Ruo-Yang Zhang, C. T. Chan, Guancong Ma
Summary: This study demonstrates the realization of non-Abelian braiding of multiple degenerate acoustic waveguide modes, exploring the dynamics and geometric phase variations. By switching the order of different braiding processes, the non-Abelian characteristics are revealed.
Article
Chemistry, Physical
Tianqi Zhao, Bo Fang, Wenkang Huang, Jianxun Lu, Yinglai Wu, Changyu Shen, Chenxia Li, Xufeng Jing
Summary: In this paper, we propose an all-dielectric encoded particle metasurface using the Pancharatnam-Berry phase principle for efficient and flexible manipulation of transmitted beams. We also introduce an error analysis theory for rectangular beams and provide a method to achieve standard beam.
SURFACES AND INTERFACES
(2022)
Article
Optics
Feiyan Zhao, Jiantao Lu, Hexiang He, Yangui Zhou, Shenhe Fu, Yongyao Li
Summary: Two rotation schemes, full-wedge rotation and half-wedge rotation, of the QPM parameters in the process of fully nonlinear three-wave mixing were studied. These two schemes can effectively suppress uncertainty in creating the geometric phase in the nonlinear frequency conversion process.
Article
Optics
Sheng Liu, Shuxia Qi, Peng Li, Bingyan Wei, Peng Chen, Wei Hu, Yi Zhang, Xuetao Gan, Peng Zhang, Yanqing Lu, Zhigang Chen, Jianlin Zhao
Summary: The study demonstrates an analog of optical activity in free space using a specially designed liquid crystal element, which can be revoked by another element with the same structure. By switching the orientation of the optical element, equivalent leverotation and dextorotation can be achieved simultaneously, promising potential applications in non-magnetic optical devices like optical isolators.
LASER & PHOTONICS REVIEWS
(2022)
Article
Physics, Multidisciplinary
Wenguo Zhu, Huadan Zheng, Yongchun Zhong, Jianhui Yu, Zhe Chen
Summary: This research demonstrates a novel wave-vector-varying PB phase that naturally arises in transmission and reflection processes for paraxial beams with small incident angles. This new photonic spin Hall effect can address the contradiction between spin separation and energy efficiency in the conventional PSHE.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Jia-Yuan Zhang, Xia Yin, Ming-Yu Liu, Jize Zhao, Yang Ding, Jun Chang
Summary: We propose that universal anomalies near phase transitions may originate from geometric phase effects. In our multi-level quantum model, quantum interference induced by the geometric phase can alter the relaxation times of excited states at phase transition points. Furthermore, by introducing a phase shift of p, we can decouple the excited state from the ground state, extending the relaxation time of qubits for quantum computing.
Article
Chemistry, Analytical
Ling Wang, Yang Yang, Feng Gao, Shuhua Teng, Jinggui Zhang, Li Deng, Weijun Hong, Zhuofang Li
Summary: This paper presents a strategy of using polarization-insensitive unit cells to manipulate incident waves with arbitrary circularly polarized and linearly polarized states. The proposed method is significant for designing microwave-transmissive metasurfaces capable of polarization insensitivity.
Article
Optics
Quan Xu, Xiaoqiang Su, Xueqian Zhang, Lijuan Dong, Lifeng Liu, Yunlong Shi, Qiu Wang, Ming Kang, Andrea Alu
Summary: Metasurfaces have enabled the realization of optical functionalities on an ultrathin platform, driving the field of flat optics. Traditional metasurfaces have static meta-atoms, while reconfigurable and programmable metasurfaces offer customized functionality with individually reprogrammable meta-atoms.
ADVANCED PHOTONICS
(2022)
Article
Optics
Tianqi Zhao, Xufeng Jing, Xiaoyan Tang, Xun Bie, Tianzi Luo, Haiyong Gan, Yingwei He, Chenxia Li, Zhi Hong
Summary: The study introduces an encoding metasurface with a three-layer C-shaped unit cell structure, which controls transmission phase and deflection angle through rotation angles, and utilizes Fourier convolution theory for flexible control.
OPTICS AND LASERS IN ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Debottam Mandal, Kamal Das, Amit Agarwal
Summary: The recent discovery of the quantum nonlinear Hall effect has revived research in the field of nonlinear transport. In this study, the magnetic-field-induced nonlinear transport in time reversal symmetric Weyl semimetals is investigated. It is shown that the interplay of band-geometric quantities and the magnetic force can result in a finite nonlinear Hall conductivity that is linear in the magnetic field. Additionally, the chiral chemical potential is found to give rise to linear magnetic-field-dependent nonlinear longitudinal conductivities as well as nonlinear Hall conductivities.
Article
Crystallography
Ying Ma, Mingkui Yin, Yuhang Shan, Vladimir G. Chigrinov, Hoi-Sing Kwok, Jianlin Zhao
Summary: This study introduces a ferroelectric liquid crystal (FLC) compound lens based on the Pancharatnam-Berry (PB) phase, which integrates polarization grating and a PB lens to achieve rapid transmittance tunability. The FLC compound lenses can function as concave/convex lenses with spatially separated output light, and have potential applications in various displays and augmented reality.
Article
Quantum Science & Technology
Long Chen, Jian Wei You, Ze Gu, Qian Ma, Tie Jun Cui
Summary: This study develops an analog quantum bit based on Pancharatnam-Berry phase metasurfaces. It not only provides a theoretical foundation to go beyond the information limit of classical bits but also develops a feasible physics platform to investigate quantum information science.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Multidisciplinary Sciences
Yingli Ha, Yinghui Guo, Mingbo Pu, Xiong Li, Xiaoliang Ma, Zuojun Zhang, Xiangang Luo
Summary: The integration of metasurfaces with silicon-on-insulator waveguides allows for arbitrary phase and intensity manipulation of guided waves, demonstrating low loss and independent transmission of electromagnetic waves in a four-channel multiplexer. This approach enables high information transmission capacity, low loss, and low crosstalk for applications such as multiplexed orbital angular momentum and holographic generators.
ADVANCED THEORY AND SIMULATIONS
(2021)
Article
Chemistry, Multidisciplinary
Fei Zhang, Mingbo Pu, Xiong Li, Xiaoliang Ma, Yinghui Guo, Ping Gao, Honglin Yu, Min Gu, Xiangang Luo
Summary: In this study, a novel infrared optical system design based on catenary optics and isophase streamline optimization was proposed, leading to high-efficiency, wide-angle, and broadband performance. The breakthrough technology achieved near 100% diffraction efficiency in ultrawide spectral and angular ranges, enabling wide-angle diffraction-limited imaging and laser beam steering with a field of view up to 178 degrees. This methodology is scalable to the entire optical band and various materials, offering compact infrared systems for surveillance, unmanned vehicles, medical science, and more.
ADVANCED MATERIALS
(2021)
Article
Physics, Applied
Zhenyan Li, Weijie Kong, Changtao Wang, Mingbo Pu, Yunfei Luo, Xiangzhi Liu, Wenjuan Du, Xiaoliang Ma, Xiong Li, Xiangang Luo
Summary: The proposed waveguide-based structured illumination microscopy method utilizes surface evanescent waves interference patterns and Blind-SIM algorithm to enhance super-resolution surface imaging performance. The more compact waveguide structure design reduces costs and allows for improved imaging quality.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Applied
Gensen Yang, Fei Zhang, Mingbo Pu, Xiong Li, Xiaoliang Ma, Yinghui Guo, Xiangang Luo
Summary: This paper presents the design of dual-wavelength multilevel diffractive lenses, which can effectively improve the imaging capabilities of optical systems. The results suggest good focusing performance at two wavelengths, providing new opportunities for various applications in dual-wavelength imaging systems and lightweight collimators.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Optics
Zhu Li, Changtao Wang, Yanqin Wang, Xinjian Lu, Yinghui Guo, Xiong Li, Xiaoliang Ma, Mingbo Pu, Xiangang Luo
Summary: This paper presents a design of a super-oscillatory metasurface doublet capable of achieving sub-diffraction focusing at high incident angles in the far field, with high efficiency and supporting numerical results. This technology may have potential applications in label-free super-resolution microscopy and optical precise fabrication.
Article
Nanoscience & Nanotechnology
Ruonan Ji, Xin Xie, Xuyue Guo, Yang Zhao, Chuan Jin, Kun Song, Shaowei Wang, Jianbo Yin, Yahong Liu, Chengming Jiang, Chaoshun Yang, Xiaopeng Zhao, Wei Lu
Summary: In this work, a phase modulation strategy based on chiral structure was proposed, allowing for control of the evolution of the Aharonov-Anandan geometric phase by tuning structural parameters independently. Umbrella-shaped metal-insulator-metal structures and metasurfaces were designed to generate broadband orbital angular momentums and spin-switchable holograms. The strategy achieved broadband spin-dependent phase modulation while minimizing dispersive effects.
Article
Optics
Ruonan Ji, Kun Song, Xuyue Guo, Xin Xie, Yang Zhao, Chuan Jin, Shaowei Wang, Chengming Jiang, Jianbo Yin, Yahong Liu, Shilong Zhai, Xiaopeng Zhao, Wei Lu
Summary: The paper proposes a strategy to achieve simultaneous wavefront shaping and polarization rotation, utilizing a spin-decoupled phase metasurface and Pancharatnam-Berry geometric phase. This enables high efficiency polarization-insensitive hologram generator and multiple ring vortex beam generator designs. The strategy provides a simple and pixel-saving approach for designing integrated and multitasking devices.
Article
Optics
Dongliang Tang, Zhenglong Shao, Yingjie Zhou, Yu Lei, Long Chen, Jin Xie, Xiaohu Zhang, Xin Xie, Fan Fan, Lei Liao, Shuangchun Wen
Summary: As a fundamental material in display technology, liquid crystal (LC) possesses excellent properties for the development of next-generation flat optical devices. Current LC elements lack flexibility due to their single functionality. This paper proposes flat LC elements that can simultaneously achieve near-field display and far-field holography. Experimental demonstrations of two-channel LC elements generating grayscale patterns and independent holographic images are presented. Position and spatial multiplexing methodologies are introduced to enhance the information capacity.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Dandan Wen, Kai Pan, Jiajun Meng, Xuanguang Wu, Xuyue Guo, Peng Li, Sheng Liu, Dong Li, Bingyan Wei, Xin Xie, Dexing Yang, Jianlin Zhao, Kenneth B. Crozier
Summary: This study demonstrates a method to generate an array of CVBs using a single optical element, which significantly increases the number of polarization channels compared to previous methods and solves the issue of unequal intensity distributions. Furthermore, it allows for control of CVB orders and polarization rotation, enhancing the flexibility of vector field control.
LASER & PHOTONICS REVIEWS
(2022)
Article
Physics, Applied
Jianing Yang, Yanting Zhang, Ming-Chun Tang, Yijia Huang, Xin Xie
Summary: A broadband reconfigurable metasurface with perpendicular metallic gratings and a PIN diode-driven split circular ring has been demonstrated for polarization and propagation modes control. The designed metasurface possesses tunable properties in two propagation modes. It can convert incident linear-polarized waves into transmitted cross-polarized waves with full transmission in the OFF state and reflect incident linear-polarized waves into co-polarized waves with full reflection in the ON state. The proposed reconfigurable metasurface shows tunable transmission, reflection, and polarization properties from 4.9 to 7 GHz.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Optics
Xin Xie, Wenjuan Du, Zhenglong Shao, Yingjie Zhou, Zhilang Lou, Ruonan Ji, Dandan Wen, Bingyan Wei, Xuetao Gan, Jianlin Zhao, Fan Fan, Dongliang Tang
Summary: Planar liquid crystal (LC) optics has made progress in achieving multifunctional and integrated light manipulation through the proposal of several LC elements. The designs include gray-image multiplexing for independent binary gray images and manipulation of amplitude and phase for the integration of a holographic image, resulting in a tri-channel display. The proposed strategy also demonstrates the electrical tunability of the LC molecule for image control.
LASER & PHOTONICS REVIEWS
(2023)
Article
Multidisciplinary Sciences
Fei Zhang, Yinghui Guo, Mingbo Pu, Lianwei Chen, Mingfeng Xu, Minghao Liao, Lanting Li, Xiong Li, Xiaoliang Ma, Xiangang Luo
Summary: Optical encryption is a promising method for protecting secret information, but has limitations such as bulky systems and low security. The proposed strategy of meta-optics-empowered vector visual cryptography fully utilizes the degrees of freedom of light and spatial dislocation to improve security. The decryption meta-camera enables real-time imaging display of hidden information, avoiding redundant measurement and digital post-processing. This strategy has a compact footprint, high security, and rapid decryption, providing a new approach to optical information security and anti-counterfeiting.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Applied
Jun Luo, Yuhui Wang, Mingbo Pu, Fei Zhang, Mingfeng Xu, Xiaoliang Ma, Xiong Li, Cheng Huang, Zuojun Zhang, Lianwei Chen, Xiangang Luo
Summary: This study reports a multiple rotational Doppler effect (RDE) based on a time-varying generalized Pancharatnam-Berry phase, obtained from a single spinning meta-atom placed in a rectangular waveguide. Twofold and sixfold rotational Doppler shifts with respect to the rotational velocity are obtained from meta-atoms with C2 and C3 rotational symmetry, respectively. This work represents the interaction of an electromagnetic wave with a single spinning meta-atom, which may have potential applications in rotation-detection systems, frequency-gradient metasurfaces, and frequency modulators.
PHYSICAL REVIEW APPLIED
(2023)
Review
Quantum Science & Technology
Shangguo Zhu, Yun Long, Wei Gou, Mingbo Pu, Xiangang Luo
Summary: Arrays of individual atoms trapped in optical microtraps offer a versatile platform for quantum sciences and technologies. By utilizing tunnel-coupled optical microtraps, researchers can explore exotic quantum states, phases, and dynamics that are challenging to achieve in conventional optical lattices.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Nanoscience & Nanotechnology
Zhenglong Shao, Xin Xie, Yingjie Zhou, Xiaohu Zhang, Wenjuan Du, Fan Fan, Dongliang Tang
Summary: Liquid crystal elements with multifunctional properties are proposed, integrating surface display and binary-phase focusing lens. By controlling the complex amplitude of incident light, the elements can achieve high-definition surface pattern, optical focusing/imaging performance, and even bifocal lens with different focal lengths.
