Article
Physics, Multidisciplinary
Yangyang Fu, Yuan Tian, Xiao Li, Shili Yang, Youwen Liu, Yadong Xu, Minghui Lu
Summary: In this study, a new method for achieving robust asymmetric generation of acoustic vortex field through dual-layer metasurfaces is introduced. This is achieved by controlling the intrinsic topologic charges and the parity of geometry design. The underlying physics is contributed to the one-way process of orbital angular momentum transition ensured by the broken spatial symmetry and the external topologic charge from the vortex diffraction. The novel phenomenon is experimentally demonstrated, providing new routes to manipulate the asymmetric response of vortex fields and potential applications in passive OAM-based diodes.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Min Wang, Lieyu Chen, Duk-Yong Choi, Shuangyin Huang, Qiang Wang, Chenghou Tu, Hua Cheng, Jianguo Tian, Yongnan Li, Shuqi Chen, Hui-Tian Wang
Summary: Twisted photons have the potential to carry an unlimited amount of orbital angular momentum (OAM), which is crucial for quantum communication and testing quantum theory. However, current methods for characterizing OAM quantum states have limitations in miniaturization. This study presents a scheme using all-dielectric metasurfaces composed of birefringent meta-atoms to reconstruct the density matrix of single photon OAM quantum states. The researchers also measured the Schmidt number of OAM entanglement by multiplexing multiple degrees of freedom. This work represents a step towards practical applications of quantum metadevices in free-space quantum imaging and communications.
Article
Physics, Multidisciplinary
Wilton J. M. Kort-Kamp, Abul K. Azad, Diego A. R. Dalvit
Summary: Space-time quantum metasurfaces provide a compact platform for manipulating quantum light, allowing continuous tuning of coherent light-matter interactions in space and time. They enable arbitrary control of the spectral, spatial, and spin properties of nonclassical light, leading to tailored entanglement of single photon degrees of freedom and generation of steered and vortex photon pairs. These metasurfaces have the potential to enable novel photonic functionalities, such as encoding quantum information into high-dimensional color qudits and generating reconfigurable hyperentanglement for high-capacity quantum communications.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Zhibing Liu, Jiahui Zou, Zhaoyu Lai, Jiajing Tu, Shecheng Gao, Weiping Liu, Zhaohui Li
Summary: This paper analyzed the distortion of Optical Coordinate Transformation (OCT) in the field of orbital angular momentum (OAM) (de)multiplexing or manipulation, proposed an optimization scheme to improve the distortion, and validated the effectiveness of the method through experiments using phase masks realized by metasurfaces.
Article
Optics
Jianfeng Zhu, Mengze Li, Jiexin Lai, Yang Yang
Summary: This work demonstrates a polarization-maintaining metasurface for spin-decoupled beam shaping using multimaterial additive manufacturing. The wavefronts of LHCP and RHCP can be independently controlled while maintaining the same spin state.
LASER & PHOTONICS REVIEWS
(2023)
Article
Nanoscience & Nanotechnology
Sijia Li, Zhuoyue Li, Xiaobin Liu, Chengyuan He, Guoshuai Huang, Ruiqi Li, Xiangyu Cao
Summary: In wireless communication systems, multibeam and multimode techniques are used to increase spatial channels and enhance channel capacity. However, previous methods could not achieve independent controls of orbital angular momentum (OAM) states in both space division and mode division multiplexing simultaneously. This study demonstrates a multilayer transmissive digital coding metasurface with a single emitting source for quadOAM beam generation with dual mode. This scheme provides a simple way to multiplexing, multichannel, and multiplatform communication and imaging systems.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Feng Mei, Geyang Qu, Xinbo Sha, Jing Han, Moxin Yu, Hao Li, Qinmiao Chen, Ziheng Ji, Jincheng Ni, Cheng-Wei Qiu, Qinghai Song, Yuri Kivshar, Shumin Xiao
Summary: The authors demonstrate an efficient way to generate high-purity vortex beams by applying optical neural networks to cascaded phase-only metasurfaces. Specifically, they present record-high-quality Laguerre-Gaussian (LGp,l) optical modes with polynomial orders p = 10 and l = 200 with purity in p, l and relative conversion efficiency of 96%, 85%, and 70%, respectively.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Cormac McDonnell, Junhong Deng, Symeon Sideris, Tal Ellenbogen, Guixin Li
Summary: The use of broadband THz emitters based on Pancharatnam-Berry phase nonlinear metasurfaces allows for precise control and tuning of THz waves.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Xiang-Yu Zeng, Yu-Qin Zhang, Rui-Rui Zhang, Xiao-Rong Ren, Zi-Jun Zhan, Man-Na Gu, Rui Sun, Chun-Xiang Liu, Chuan-Fu Cheng
Summary: Metasurfaces with orthogonal nano-slit pairs arranged on spirals are proposed to generate vector beams of Bell-like states and slanted polarizations. The design is based on the theoretically derived parameter condition for manipulation of the two vector vortex modes, satisfied by matching the rotation order m, the spiral order n, and incident polarization helicity sigma. Linear polarization states of the vector beams are controlled by the initial orientation angle of slit pairs.
Article
Engineering, Electrical & Electronic
Hongyu Shi, Luyi Wang, Guoqiang Li, Jianjia Yi, Haiwen Liu, Anxue Zhang, Zhuo Xu
Summary: Vortex beams, which exhibit a helical phase front and amplitude singularity, carry orbital angular momentum (OAM) and have been extensively studied. Various methods have been proposed to flexibly impart OAM and control the characteristics of the vortex beams, such as topological charge, propagation, polarization, bandwidth, and efficiency. This review focuses on the guided-wave metasurface based approach, which has shown rapid progress in generating and manipulating vortex beams. The review covers advancements in OAM topological charge switching, polarization control, divergence control, full-space vortex beam generation, broadband vortex beam generation, and vortex multibeam, addressing the increasing demands of vortex beam applications.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jianfeng Zhu, Yang Yang, Jiexin Lai, Jaim Nulman
Summary: This paper proposes ultrathin broadband polarization-insensitive transmissive metasurfaces that can manipulate the polarization and wavefront of electromagnetic waves arbitrarily. By rotating the transmitting antenna and adjusting the lengths of the transmission lines, the functions of polarization conversion and wavefront shaping are achieved, which are insensitive to polarization.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Jianfeng Zhu, Yang Yang, Nathan Hu, Shaowei Liao, Jaim Nulman
Summary: The article proposes a new strategy for controlling the wavefront and polarization of electromagnetic waves using an ultrathin flat device, enabling independent control of the wavefronts of left-hand circular polarization and right-hand circular polarization waves. This is achieved through additive manufacturing techniques.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Physics, Applied
Kaixiang Cheng, Zexu Liu, Zheng-Da Hu, Guoyang Cao, Jingjing Wu, Jicheng Wang
Summary: This study demonstrates an all-dielectric metasurface based on a geometric phase for generating perfect vortex (PV) beams with different topological charges. The metasurface, which is ultra-thin and flexible, has the potential for a wide range of applications in manipulating circularly polarized light.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Zeqi Liu, Hengkang Zhang, Kaige Liu, Bin Zhang, Xing Fu, Qiang Liu
Summary: This paper proposes a data transmission method based on an OAM-basis transmission matrix (TM), which enables the multiplexing of a large number of OAM channels under high scattering conditions, effectively increasing the capacity of optical communication.
Article
Physics, Multidisciplinary
Zhiqiang Du, Zhengyong Song
Summary: Due to the increasing complexity of modern communication systems, the requirements for electromagnetic wave are becoming more and more rigorous. Metasurfaces based on Ge3Sb2Te6 are designed to control electromagnetic wavefront in the mid-infrared range by changing the state of Ge3Sb2Te6. By designing specific structures, deflection of electromagnetic wavefront and vortex beams with orbital angular momentum can be achieved. This design may lead to novel types of metasurfaces.
Article
Materials Science, Multidisciplinary
Shuo Liu, Lei Zhang, Quan Long Yang, Quan Xu, Yan Yang, Ahsan Noor, Qian Zhang, Shahid Iqbal, Xiang Wan, Zhen Tian, Wen Xuan Tang, Qiang Cheng, Jia Guang Han, Wei Li Zhang, Tie Jun Cui
ADVANCED OPTICAL MATERIALS
(2016)
Article
Nanoscience & Nanotechnology
Shuo Liu, Ahsan Noor, Liang Liang Du, Lei Zhang, Quan Xu, Kang Luan, Tian Qi Wang, Zhen Tian, Wen Xuan Tang, Jia Guang Han, Wei Li Zhang, Xiao Yang Zhou, Qiang Cheng, Tie Jun Cui
Article
Optics
Shuo Liu, Tie Jun Cui, Ahsan Noor, Zui Tao, Hao Chi Zhang, Guo Dong Bai, Yan Yang, Xiao Yang Zhou
LIGHT-SCIENCE & APPLICATIONS
(2018)
Article
Nanoscience & Nanotechnology
Ahsan Noor, Anoop R. Damodaran, In-Ho Lee, Stefan A. Maier, Sang-Hyun Oh, Cristian Ciraci
Article
Materials Science, Multidisciplinary
Ahsan Noor, Muhammad Khalid, Federico De Luca, Henrikh M. Baghramyan, Michele Castriotta, Antonella D'Orazio, Cristian Ciraci
Summary: Plasmonic waveguides provide an integrated platform for the development of efficient nanoscale ultrafast photonic devices. In this study, a numerical calculation method is proposed to investigate nonlinear optical effects in waveguides with nonlocal response effects and surface nonlinearities. By studying the nonlinear response caused by the hydrodynamic description of free electrons in the waveguide metal constituents, local and nonlocal approximations are compared.
Proceedings Paper
Engineering, Electrical & Electronic
A. Noor, A. R. Damodaran, I. H. Lee, S. A. Maier, S-H Oh, A. D'Orazio, C. Ciraci
Summary: Plasmonic systems have advantages in nonlinear optics due to their ability to confine and enhance incident light, which can be used to boost nonlinear interactions. This contribution explores the potential of dielectric-loaded plasmonic film-coupled nanopatch antennas for optimal second-harmonic generation.
2021 FIFTEENTH INTERNATIONAL CONGRESS ON ARTIFICIAL MATERIALS FOR NOVEL WAVE PHENOMENA (METAMATERIALS)
(2021)