The complete description of a continuous-wave light field includes its four fundamental properties:wavelength,polarization,phase and amplitude.However,the simultaneous measurement of a multi-dimensional light field of...The complete description of a continuous-wave light field includes its four fundamental properties:wavelength,polarization,phase and amplitude.However,the simultaneous measurement of a multi-dimensional light field of such four degrees of freedom is challenging in conventional optical systems requiring a cascade of dispersive and polarization elements.In this work,we demonstrate a disordered-photonics-assisted intelligent four-dimensional light field sensor.This is achieved by discovering that the speckle patterns,generated from light scattering in a disordered medium,are intrinsically sensitive to a high-dimension light field given their high structural degrees of freedom.Further,the multi-task-learning deep neural network is leveraged to process the single-shot light-field-encoded speckle images free from any prior knowledge of the complex disordered structures and realizes the high-accuracy recognition of full-Stokes vector,multiple orbital angular momentum(OAM),wavelength and power.The proof-of-concept study shows that the states space of four-dimensional light field spanning as high as 1680=4(multiple-OAM)×2(OAM power spectra)×15(multiple-wavelength)×14(polarizations)can be well recognized with high accuracy in the chip-integrated sensor.Our work provides a novel paradigm for the design of optical sensors for high-dimension light fields,which can be widely applied in optical communication,holography,and imaging.展开更多
By introducing and graduly increasing the magnitude of disorder into both crystallineparticle packings and crystalline networks,we realize the evolution from crystals to amorphous solids.The evolution of structures an...By introducing and graduly increasing the magnitude of disorder into both crystallineparticle packings and crystalline networks,we realize the evolution from crystals to amorphous solids.The evolution of structures and mechanical properties during this process is expected to help,us understand the physical origin of the peculiar properties of amorphous solids,e.gthebosonpeak,so as to buildupthebridgebetween wll-established physics of crystals and that of amorphous solids.To our surprise,this attempt also reveals some extraordinary phenomena,including the hidden order-disorder transition from crystals to disordered crystals and the emergence of mechanical metamaterials with negative Poisson's ratios.展开更多
基金National Key Research and Development Program of China(2022YFA1203700)Natural Science Foundation of Fujian Province of China(2023J06011)+6 种基金National Natural Science Foundation of China(Grants No.12274357,62005231,62075186,62005164)Fundamental Research Funds for the Central Universities(20720210045)Guangdong Basic and Applied Basic Research Foundation(2021A1515012199)Shanghai Rising-Star Program(20QA1404100)Science and Technology Commission of Shanghai Municipality(Grant No.21DZ1100500)Shanghai Municipal Science and Technology Major Project,Shanghai Frontiers Science Center Program(2021-2025 No.20)Zhangjiang National Innovation Demonstration Zone(Grant No.ZJ2019-ZD-005).
文摘The complete description of a continuous-wave light field includes its four fundamental properties:wavelength,polarization,phase and amplitude.However,the simultaneous measurement of a multi-dimensional light field of such four degrees of freedom is challenging in conventional optical systems requiring a cascade of dispersive and polarization elements.In this work,we demonstrate a disordered-photonics-assisted intelligent four-dimensional light field sensor.This is achieved by discovering that the speckle patterns,generated from light scattering in a disordered medium,are intrinsically sensitive to a high-dimension light field given their high structural degrees of freedom.Further,the multi-task-learning deep neural network is leveraged to process the single-shot light-field-encoded speckle images free from any prior knowledge of the complex disordered structures and realizes the high-accuracy recognition of full-Stokes vector,multiple orbital angular momentum(OAM),wavelength and power.The proof-of-concept study shows that the states space of four-dimensional light field spanning as high as 1680=4(multiple-OAM)×2(OAM power spectra)×15(multiple-wavelength)×14(polarizations)can be well recognized with high accuracy in the chip-integrated sensor.Our work provides a novel paradigm for the design of optical sensors for high-dimension light fields,which can be widely applied in optical communication,holography,and imaging.
基金We would like to thank the group members who performed the studies discussed in this article.We also thank the support by the National Natural Science Foundation of China(Grant No.11734014).
文摘By introducing and graduly increasing the magnitude of disorder into both crystallineparticle packings and crystalline networks,we realize the evolution from crystals to amorphous solids.The evolution of structures and mechanical properties during this process is expected to help,us understand the physical origin of the peculiar properties of amorphous solids,e.gthebosonpeak,so as to buildupthebridgebetween wll-established physics of crystals and that of amorphous solids.To our surprise,this attempt also reveals some extraordinary phenomena,including the hidden order-disorder transition from crystals to disordered crystals and the emergence of mechanical metamaterials with negative Poisson's ratios.
