Manipulating Elliptical Photonic Orbits in Microlasers for High‐Dimensional Encryption DOI
Lingling Mao,

Zhijin Yang,

Liang Zhou

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Abstract Multidimensional optical encryption is crucial for enhancing information security. The manipulation of laser spatial modes has emerged as an advanced technique expanding encoding dimensions. However, relying exclusively on mode orders the dimension in mode‐division multiplexing (MDM) still limits potential improving In this study, multidimensional achieved by manipulating elliptical orbital angular momentum (OAM) within microlasers. By governing photonic orbits a Fabry–Pérot (FP) microcavity, four independent dimensions are established single OAM mode: azimuthal order, radial ellipticity, and long‐axis direction. This configuration enables 4D through construction microcavity array. Moreover, distinct patterns provide array with physical unclonable function (PUF), which further enhances security level device. study presents strategy increasing capacity microlasers, offering promising platforms high‐security anticounterfeiting.

Language: Английский

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

et al.

eLight, Journal Year: 2024, Volume and Issue: 4(1)

Published: March 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.

Language: Английский

Citations

31
Graphene biosensor design based on glass substrate for forensic detection of illicit drugs DOI
Jacob Wekalao, Osamah Alsalman,

Rinku Manvani

et al.

Optical and Quantum Electronics, Journal Year: 2024, Volume and Issue: 56(5)

Published: March 29, 2024

Language: Английский

Citations

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

Dengchong Feng,

Qi Guo, Zhenjie Huang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(23)

Published: March 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.

Language: Английский

Citations

22
High-dimensional Poincaré beams generated through cascaded metasurfaces for high-security optical encryption DOI Creative Commons
Jitao Ji, Chen Chen, Jiacheng Sun

et al.

PhotoniX, Journal Year: 2024, Volume and Issue: 5(1)

Published: April 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.

Language: Английский

Citations

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

et al.

Opto-Electronic Advances, Journal Year: 2023, Volume and Issue: 6(12), P. 230120 - 230120

Published: Jan. 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.

Language: Английский

Citations

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

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(23)

Published: April 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.

Language: Английский

Citations

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

Kening Qu,

Yangyang Shi

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(28), P. 18693 - 18700

Published: July 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.

Language: Английский

Citations

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

Haiye Xu,

Hui Xu, Xiaojie Yang

et al.

Physics Letters A, Journal Year: 2024, Volume and Issue: 504, P. 129401 - 129401

Published: Feb. 27, 2024

Language: Английский

Citations

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

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

Citations

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

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

Citations

1