Multidimensional‐Encrypted Meta‐Optics Storage Empowered by Diffraction‐Order Decoupling DOI Open Access

Zirui Zhao,

Zejing Wang, Yangyang Shi

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 9, 2025

Recent advancements in multidimensional multiplexing have paved the way for meta-optics encryption to be a viable solution next-generation information storage and security. However, challenges persist increasing simultaneously modulated dimensions while minimizing structural complexity. Here, novel single-cell order-decoupling method is proposed realization of encrypted system. By analyzing mathematic relationships between phases different diffraction orders, detour phase structure optimized achieve independent encoding freedom multiple orders. The successfully realize concurrent modulation four optical dimensions: i) Wavelength, ii) Wavevector Direction, iii) Polarization, iv) Diffraction Order. system achieves up sixteen-channel meta-holograms with low crosstalk exponentially raises threshold brute-force decoding thus remarkably enhances security storage. It envisioned that on-chip metasurface-based strategy augmented reality display functionalities presents promising applications encryption/storage, anti-counterfeiting, multifunctional photonics integrated circuits.

Язык: Английский

Vectorial liquid-crystal holography DOI Creative Commons
Zeyu Wang, Zhou Zhou, Han Zhang

и другие.

eLight, Год журнала: 2024, Номер 4(1)

Опубликована: Март 5, 2024

Abstract Vectorial optics with fine inhomogeneous polarization control are highly desired. Metasurfaces have been captivated a promising candidate, but their static post-fabrication geometry largely limits the dynamic tunability. Liquid crystal (LC) is usually employed as an additional index-changing layer together metasurfaces. Unfortunately, most of reported LCs only impart varying uniform phase on top that from metasurface, which we term “scalar” LC optics. Here, pixelate single-layer to display versatile and tunable vectorial holography, in amplitude could be arbitrarily independently controlled at spatial positions. Furthermore, subtle LC-holography highlights broadband electrically-switchable functionalities. Our holography reveals significant opportunities for advanced cryptography, super-resolution imaging, many other applications.

Язык: Английский

Процитировано

32
Graphene biosensor design based on glass substrate for forensic detection of illicit drugs DOI
Jacob Wekalao, Osamah Alsalman,

Rinku Manvani

и другие.

Optical and Quantum Electronics, Год журнала: 2024, Номер 56(5)

Опубликована: Март 29, 2024

Язык: Английский

Процитировано

29
Viscoelasticity‐Controlled Relaxation in Wrinkling Surface for Multistage Time‐Resolved Optical Information Encryption DOI

Dengchong Feng,

Qi Guo, Zhenjie Huang

и другие.

Advanced Materials, Год журнала: 2024, Номер 36(23)

Опубликована: Март 6, 2024

Abstract As counterfeit techniques continue to evolve, ensuring the security of conventional “static” encryption methods becomes increasingly challenging. Here, viscoelasticity‐controlled relaxation is introduced for first time in a bilayer wrinkling system by regulating density hydrogen bond networks polymer construct “dynamic” material. The surface can manipulate light during dynamic process, exhibiting three stages with frosted glass, structural color, and mirror reflection. By viscoelasticity skin layer through UV irradiation, wavelength rate wrinkles be controlled. result, anti‐counterfeiting patterns time‐resolved multistage information are achieved. Crucially, material developed as an label packing boxes daily applications, allowing encrypted activated manually identified naked eyes, surpassing existing materials utilization potential. Besides, extended various interaction networks, demonstrating versatility strategy. This work not only provides additional dimension practical use, but also offers theoretical guidance development advanced optical smart display future.

Язык: Английский

Процитировано

25
High-dimensional Poincaré beams generated through cascaded metasurfaces for high-security optical encryption DOI Creative Commons
Jitao Ji, Chen Chen, Jiacheng Sun

и другие.

PhotoniX, Год журнала: 2024, Номер 5(1)

Опубликована: Апрель 17, 2024

Abstract Optical encryption plays an increasingly important role in the field of information security owing to its parallel processing capability and low power consumption. Employing ultrathin metasurfaces optical has promoted miniaturization multifunctionality systems. Nevertheless, with few number degrees freedom (DoFs) multiplexed by single metasurface, both key space encoding are limited. To address this issue, we propose a high-security large-capacity scheme based on perfect high-dimensional Poincaré beams expanded DoFs. By cascading two arrayed metasurfaces, more beam properties can be independently engineered, which gives rise extensively spaces. Our work provides promising strategy for high level large capacity might facilitate applications communications quantum information.

Язык: Английский

Процитировано

18
All-optical object identification and three-dimensional reconstruction based on optical computing metasurface DOI Creative Commons
Dingyu Xu, Wenhao Xu, Qiang Yang

и другие.

Opto-Electronic Advances, Год журнала: 2023, Номер 6(12), С. 230120 - 230120

Опубликована: Янв. 1, 2023

Object identification and three-dimensional reconstruction techniques are always attractive research interests in machine vision, virtual reality, augmented biomedical engineering. Optical computing metasurface, as a two-dimensional artificial design component, has displayed the supernormal character of controlling phase, amplitude, polarization, frequency distributions light beam, capable performing mathematical operations on input field. Here, we propose demonstrate an all-optical object technique based optical apply it to 3D reconstruction. Unlike traditional mechanisms, this scheme reduces memory consumption processing contour surface extraction. The experimental results from high-contrast low-contrast objects agree well with real objects. exploration provides potential applications high efficiencies, low consumption, compact systems.

Язык: Английский

Процитировано

29
Silicon Vacancies Diamond/Silk/PVA Hierarchical Physical Unclonable Functions for Multi‐Level Encryption DOI
Fuhang Jiao, Chaonan Lin, Lin Dong

и другие.

Advanced Science, Год журнала: 2024, Номер 11(23)

Опубликована: Апрель 4, 2024

Abstract Physical unclonable functions (PUFs) have emerged as a promising encryption technology, utilizing intrinsic physical identifiers that offer enhanced security and tamper resistance. Multi‐level PUFs boost system complexity, thereby improving reliability fault tolerance. However, crosstalk‐free multi‐level remain persistent challenge. In this study, hierarchical PUF harnesses the spontaneous phase separation of silk fibroin /PVA blend random distribution silicon‐vacancy diamonds within is presented. The thermodynamic instability inherent unpredictability diamond dispersion gives rise to intricate patterns at two distinct scales, enabling time‐efficient authentication for cryptographic keys. These are complementary yet independent, inherently resistant replication damage thus affording robust proposed system. Furthermore, customized algorithms constructed: visual utilizes neural network combined structural similarity index measure, while spectral employs Hamming distance cross‐correlation bit operation. This attains high recognition rate without interscale crosstalk. Additionally, coding capacity exponentially using M‐ary encoding reinforce encryption. Hierarchical hold significant potential immediate application, offering unprecedented data protection key capabilities.

Язык: Английский

Процитировано

11
Multidimensional Encryption by Chip-Integrated Metasurfaces DOI
Shuai Wan,

Kening Qu,

Yangyang Shi

и другие.

ACS Nano, Год журнала: 2024, Номер 18(28), С. 18693 - 18700

Опубликована: Июль 3, 2024

Facing the challenge of information security in current era technology, optical encryption based on metasurfaces presents a promising solution to this issue. However, most metasurface-based techniques rely limited decoding keys and struggle achieve multidimensional complex encryption. It hinders progress storage capacity puts at disclosing risk. Here, we propose experimentally demonstrate system chip-integrated that successfully incorporates simultaneous manipulation three-dimensional parameters, including wavelength, direction, polarization. Hence, up eight-channel augmented reality (AR) holograms are concealed by near- far-field fused encryption, which can only be extracted correctly providing then vividly exhibit authorizer with low crosstalk, high definition, no zero-order speckle noise. We envision miniature metasurface strategy for functionalities promises feasible route toward enhancement anticounterfeiting performance optically cryptographic storage.

Язык: Английский

Процитировано

10
Polarization-sensitive asynchronous switch and notable slow-light based on tunable triple plasmon-induced transparency effect DOI

Haiye Xu,

Hui Xu, Xiaojie Yang

и другие.

Physics Letters A, Год журнала: 2024, Номер 504, С. 129401 - 129401

Опубликована: Фев. 27, 2024

Язык: Английский

Процитировано

9
Unlocking Secure Optical Multiplexing with Spatially Incoherent Light DOI Open Access
Xin Liu, Xiaofei Li, Sergey A. Ponomarenko

и другие.

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Abstract While coherent light holds promise for optical multiplexing via orthogonal degrees of freedom, its vulnerability to disturbances often results in information loss and retrieval hurdles, primarily due reliance on first‐order parameters. Herein, an incoherent protocol is proposed theoretically verified experimentally by harnessing the two‐point field correlations structured random light. The securely stored multiplexed which are inaccessible a direct capture camera retrieved only through rigorous statistical processing. inherently nature waves makes this crosstalk‐free principle guarantees high fidelity even extremely noisy environment. advanced opens new horizons array fields, such as cryptography imaging, it can be relevant processing with diverse physical nature, including acoustic matter waves.

Язык: Английский

Процитировано

1
Polarization‐Independent Dispersive Complex‐Amplitude Modulation via Anisotropic Metasurfaces DOI Open Access
Hui Yang, Meiyu Peng, Hairong He

и другие.

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Янв. 11, 2025

Abstract Polarization‐independent characteristic is highly desirable for practical applications, and metasurfaces, it typically achieved through isotropic structures. This inevitably leads to a lost degree of freedom (DoF) within the parameter space, thereby restricting realization advanced functionalities in polarization‐independent regime. Here, counterintuitively, dispersive complex‐amplitude modulation via single‐layered anisotropic metasurface. By fully exploiting in‐plane DoFs previously unattainable can be without adding additional challenges metasurface manufacturing. The underlying mechanism relies on optimization superimposed Jones matrix meta‐molecule, which demonstrates identical behavior under pair orthogonal polarization bases. As proof concept, color printing numerically experimentally demonstrated, completely different from resonant structural that depends spectral characteristic. Moreover, integration near‐field printing, far‐field holography, an achromatic multi‐port beam splitter with arbitrary power ratio are demonstrated as well. proposed platform opens up new doors designing compact meta‐devices, holding various applications augmented‐reality displaying, information communication, optical security.

Язык: Английский

Процитировано

1