Hemeng Xue, Mingtao Shang, Ze Zhang, Hongfei Yu, Jinchao Liang, Meiling Guan, Chengming Sun, Huahua Wang, Shufeng Wang, Zhengyu Ye, Feng Gao, Lu Gao
Improving the Sampling Limit of DISs
A groundbreaking approach has been developed to enhance the pixel resolution of digital image sensors (DISs) by measuring the intra-pixel quantum efficiency distribution with a dynamic optical steady beam. This innovative method enables the reconstruction of hyper-sampling images with a resolution several times higher than the original sensor resolution by capturing multiple frames of the same scene during object or camera movement. It offers a novel perspective on amplifying image sensor resolution not through manufacturing enhancements, but by employing existing sensors in a different way. For detailed information, see article 2401306 by Ze Zhang, and co-workers.
{"title":"Hyper-Sampling Imaging by Measurement of Intra-Pixel Quantum Efficiency Using Steady Wave Field (Laser Photonics Rev. 19(4)/2025)","authors":"Hemeng Xue, Mingtao Shang, Ze Zhang, Hongfei Yu, Jinchao Liang, Meiling Guan, Chengming Sun, Huahua Wang, Shufeng Wang, Zhengyu Ye, Feng Gao, Lu Gao","doi":"10.1002/lpor.202570015","DOIUrl":"https://doi.org/10.1002/lpor.202570015","url":null,"abstract":"<p><b>Improving the Sampling Limit of DISs</b></p><p>A groundbreaking approach has been developed to enhance the pixel resolution of digital image sensors (DISs) by measuring the intra-pixel quantum efficiency distribution with a dynamic optical steady beam. This innovative method enables the reconstruction of hyper-sampling images with a resolution several times higher than the original sensor resolution by capturing multiple frames of the same scene during object or camera movement. It offers a novel perspective on amplifying image sensor resolution not through manufacturing enhancements, but by employing existing sensors in a different way. For detailed information, see article 2401306 by Ze Zhang, and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"19 4","pages":""},"PeriodicalIF":9.8,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lpor.202570015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In article number 2400718, Peng Li and co-workers propose a metasurface-based optical image processor for performing multiple analog optical computing tasks simultaneously; this enables concurrent image differential and integral operations for edge enhancement and denoising at multiple visible wavelengths. This concurrent processing architecture paves a promising pathway towards multifunctional and higher-speed image processing for machine vision and biomedical imaging.
{"title":"Concurrent Image Differentiation and Integration Processings Enabled By Polarization-Multiplexed Metasurface (Laser Photonics Rev. 19(4)/2025)","authors":"Xinyi Bi, Xuanguang Wu, Xinhao Fan, Chenyang Zhao, Dandan Wen, Sheng Liu, Xuetao Gan, Jianlin Zhao","doi":"10.1002/lpor.202570013","DOIUrl":"https://doi.org/10.1002/lpor.202570013","url":null,"abstract":"<p><b>Toward Concurrent Processing</b></p><p>In article number 2400718, Peng Li and co-workers propose a metasurface-based optical image processor for performing multiple analog optical computing tasks simultaneously; this enables concurrent image differential and integral operations for edge enhancement and denoising at multiple visible wavelengths. This concurrent processing architecture paves a promising pathway towards multifunctional and higher-speed image processing for machine vision and biomedical imaging.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"19 4","pages":""},"PeriodicalIF":9.8,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lpor.202570013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Donglai An, Zihao Liu, Zhouzhuo Tang, Jing Ni, Qi Jie Wang
Broadband Infrared Biomolecular Detection
This cover image illustrates a waveguide-integrated surface-enhanced nanoantenna chip that simultaneously measures the amide I and II band absorption of proteins. When a long-wave infrared light is launched, an evanescent field is formed on the surface of the waveguide. The absorption of protein molecules is further enhanced with a high-intensity field excited by the gold nanoantenna. The idea of integrating the large-core rib silicon waveguide and gradient nanoantenna array can be used for multiplexed broadband biomolecular absorption detection with high-throughput. See article 2400871 by Xia Yu and co-workers for more details.
{"title":"Broadband Long-Wave Infrared On-Chip Silicon-based Surface-Enhanced Laser Spectroscopy Enabled by Gradient Nanoantenna Array (Laser Photonics Rev. 19(4)/2025)","authors":"Donglai An, Zihao Liu, Zhouzhuo Tang, Jing Ni, Qi Jie Wang","doi":"10.1002/lpor.202570014","DOIUrl":"https://doi.org/10.1002/lpor.202570014","url":null,"abstract":"<p><b>Broadband Infrared Biomolecular Detection</b></p><p>This cover image illustrates a waveguide-integrated surface-enhanced nanoantenna chip that simultaneously measures the amide I and II band absorption of proteins. When a long-wave infrared light is launched, an evanescent field is formed on the surface of the waveguide. The absorption of protein molecules is further enhanced with a high-intensity field excited by the gold nanoantenna. The idea of integrating the large-core rib silicon waveguide and gradient nanoantenna array can be used for multiplexed broadband biomolecular absorption detection with high-throughput. See article 2400871 by Xia Yu and co-workers for more details.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"19 4","pages":""},"PeriodicalIF":9.8,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lpor.202570014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jiajia Wu, Xinkuo Li, Ke Sun, Kai Gao, Chenduan Chen, Jianrong Qiu, Dezhi Tan
Phase‐only computer‐generated holography (CGH) is an effective technique to manipulate 3D light field distribution in the tight focusing volume for numerous applications in micro/nano‐manufacturing, optical tweezers, and optical communication. Unfortunately, hologram computation is slow and generally takes several seconds or longer for a single instance, which hinders broad applications in real time light modulation. Here, fast hologram computation is reported with the calculation time for a single instance down to 3.7 ms. A depth‐adaptive 3D tight‐focusing holographic network framework driven by a vectorial diffraction model is developed. The network adequately considers the tight‐focusing property and the spherical aberration effect in high NA objectives and employs a layer‐based learning strategy to reinforce the global constraints on reconstructed 3D focusing fields. This network enables the generation of high‐quality holographic phases in real time and facilitates large‐scale computations of focused fields with arbitrary spatial, intensity, and axial spacing distributions with high speed and high accuracy (up to 0.93). The proposed network is deployed in ultrafast laser direct writing and microscale fluorescence display applications, which indicates that the current 3D tight‐focusing field modulation technique will play a vital role in broad optical and photonic engineering.
{"title":"Tight Focusing Holographic Network Enables 3D Real Time and Accurate Light Field Modulation","authors":"Jiajia Wu, Xinkuo Li, Ke Sun, Kai Gao, Chenduan Chen, Jianrong Qiu, Dezhi Tan","doi":"10.1002/lpor.202401742","DOIUrl":"https://doi.org/10.1002/lpor.202401742","url":null,"abstract":"Phase‐only computer‐generated holography (CGH) is an effective technique to manipulate 3D light field distribution in the tight focusing volume for numerous applications in micro/nano‐manufacturing, optical tweezers, and optical communication. Unfortunately, hologram computation is slow and generally takes several seconds or longer for a single instance, which hinders broad applications in real time light modulation. Here, fast hologram computation is reported with the calculation time for a single instance down to 3.7 ms. A depth‐adaptive 3D tight‐focusing holographic network framework driven by a vectorial diffraction model is developed. The network adequately considers the tight‐focusing property and the spherical aberration effect in high NA objectives and employs a layer‐based learning strategy to reinforce the global constraints on reconstructed 3D focusing fields. This network enables the generation of high‐quality holographic phases in real time and facilitates large‐scale computations of focused fields with arbitrary spatial, intensity, and axial spacing distributions with high speed and high accuracy (up to 0.93). The proposed network is deployed in ultrafast laser direct writing and microscale fluorescence display applications, which indicates that the current 3D tight‐focusing field modulation technique will play a vital role in broad optical and photonic engineering.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"24 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143443281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GaN-based miniaturized light-emitting diodes (mini-LEDs) have emerged as highly promising light sources for high-performance aircraft cockpit displays. Among these diodes, vertically stacked blue‒green dual-color mini-LEDs are fabricated and show excellent color-tunable properties. When packaged with K2SiF6:Mn4+, an impressive color gamut area ratio of 113.63% NTSC is demonstrated. However, vertical optical crosstalk originates from the photoluminescence (PL) effect of the green epitaxial layer when the blue mini-LED is powered on, making precise chromatic characteristics difficult to obtain. To address this problem, a deep neural network (DNN) is proposed, which combines forward modeling and inverse design in a tandem architecture. This DNN supports a current modulation scheme that enables precise control of chromaticity coordinates, achieving a Δu′v′ of 0.003. These advancements in materials and device strategies pave the way for developing low color difference, high-resolution display systems for aircraft cockpits.
{"title":"Deep Learning for Chromatic Optimization in Dual-Color Mini-LEDs for Aircraft Displays","authors":"Fengyun Gao, Nan Zhang, Zelong Bai, Yijun Lu, Zhong Chen, Weijie Guo","doi":"10.1002/lpor.202402087","DOIUrl":"https://doi.org/10.1002/lpor.202402087","url":null,"abstract":"GaN-based miniaturized light-emitting diodes (mini-LEDs) have emerged as highly promising light sources for high-performance aircraft cockpit displays. Among these diodes, vertically stacked blue‒green dual-color mini-LEDs are fabricated and show excellent color-tunable properties. When packaged with K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup>, an impressive color gamut area ratio of 113.63% NTSC is demonstrated. However, vertical optical crosstalk originates from the photoluminescence (PL) effect of the green epitaxial layer when the blue mini-LED is powered on, making precise chromatic characteristics difficult to obtain. To address this problem, a deep neural network (DNN) is proposed, which combines forward modeling and inverse design in a tandem architecture. This DNN supports a current modulation scheme that enables precise control of chromaticity coordinates, achieving a Δ<i>u</i>′<i>v</i>′ of 0.003. These advancements in materials and device strategies pave the way for developing low color difference, high-resolution display systems for aircraft cockpits.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"12 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiufeng Li, Bingxin Huang, Claudia T. K. Lo, Chengbo Liu, Terence T. W. Wong
Ultraviolet (UV) photoacoustic microscopy has attracted lots of attention since it can provide histological images for disease diagnosis without any tissue processing or staining, holding great potential for rapid histopathology in hospitals. However, sometimes, the nuclear contrast in the images is relatively low due to the high UV absorption of various surrounding biomolecules (e.g., heme, myoglobin, lipids, etc.), resulting in low diagnostic accuracy. Here, a label-free dual-modality imaging system with ultraviolet photoacoustic and auto-fluorescence (PAAF) microscopy is proposed, which can obtain photon absorption-induced PA and AF images simultaneously using only one UV pulsed laser. With the opposite contrast acquired in the PA and AF images and the image fusion technique, this proposed PAAF microscopy enables high-contrast and high-sensitivity histological imaging for various tissues, even under a low excitation energy of 0.7 nJ and a high pulse-to-pulse energy fluctuation of ≈30%. Mouse brain, kidney, liver, lung, and human lung tissues processed by different clinical protocols have been imaged to demonstrate the versatility of PAAF microscopy, showing its promising applications in surgical pathology.
{"title":"Simultaneous Ultraviolet Photoacoustic and Auto-Fluorescence Microscopy for High-Contrast Histological Imaging","authors":"Xiufeng Li, Bingxin Huang, Claudia T. K. Lo, Chengbo Liu, Terence T. W. Wong","doi":"10.1002/lpor.202401075","DOIUrl":"https://doi.org/10.1002/lpor.202401075","url":null,"abstract":"Ultraviolet (UV) photoacoustic microscopy has attracted lots of attention since it can provide histological images for disease diagnosis without any tissue processing or staining, holding great potential for rapid histopathology in hospitals. However, sometimes, the nuclear contrast in the images is relatively low due to the high UV absorption of various surrounding biomolecules (e.g., heme, myoglobin, lipids, etc.), resulting in low diagnostic accuracy. Here, a label-free dual-modality imaging system with ultraviolet photoacoustic and auto-fluorescence (PAAF) microscopy is proposed, which can obtain photon absorption-induced PA and AF images simultaneously using only one UV pulsed laser. With the opposite contrast acquired in the PA and AF images and the image fusion technique, this proposed PAAF microscopy enables high-contrast and high-sensitivity histological imaging for various tissues, even under a low excitation energy of 0.7 nJ and a high pulse-to-pulse energy fluctuation of ≈30%. Mouse brain, kidney, liver, lung, and human lung tissues processed by different clinical protocols have been imaged to demonstrate the versatility of PAAF microscopy, showing its promising applications in surgical pathology.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"24 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Silicon (Si) light source has profound significance in monolithic integrated Si photonics. However, its luminance remains too low to meet practical use that usually requires > 10000 cd m⁻2. Here, an all‐inorganic Si nanocrystal (SiNC) white light‐emitting diode (WLED) with a continuous emission spectrum spanning ≈400–900 nm in wavelength, is reported. The architecture of the WLED comprises front electrode of Ag grids and transparent‐conducting‐oxide/electron transport layer (ETL) of ZnO/front charge confinement layer (CCL) of SiO2/active layer of low‐resistivity SiNC composite thin film/rear CCL of SiO2/hole transport layer (HTL) of MoO3/textured p‐Si substrate/rear electrode of aluminum/heat radiator. The main procedures for achieving high luminance here include combined applications of high‐pressure ammonia passivation of the active layer, which enhances its photoluminescence quantum yield significantly, and texturing of p‐Si substrate, which boosts the light extraction and charge injection effectively. With an optimized combination of passivation and texturing, luminance of 10751 cd m⁻2 is achieved with external quantum efficiency (EQE) of 0.26%. After a Peltier cooler is further applied, luminance of 12363 cd m⁻2 is attained with EQE of 0.30%. Following further technical iterations, this highly bright SiNC WLED shall find applications in monolithic integrated Si photonics and even Si general lighting.
{"title":"Highly Bright Silicon Nanocrystal White Light‐Emitting Diodes With Luminance in Excess of 10000 cd m⁻2","authors":"Fengyang Ma, Kaixin Liu, Zhongyao Yan, Liang Yu, Yanru Yang, Wuyan Zhao, Feilong Wang, Yaohua Li, Shuyu Zhang, Songyou Wang, Jian Sun, Ming Lu","doi":"10.1002/lpor.202402164","DOIUrl":"https://doi.org/10.1002/lpor.202402164","url":null,"abstract":"Silicon (Si) light source has profound significance in monolithic integrated Si photonics. However, its luminance remains too low to meet practical use that usually requires > 10000 cd m⁻<jats:sup>2</jats:sup>. Here, an all‐inorganic Si nanocrystal (SiNC) white light‐emitting diode (WLED) with a continuous emission spectrum spanning ≈400–900 nm in wavelength, is reported. The architecture of the WLED comprises front electrode of Ag grids and transparent‐conducting‐oxide/electron transport layer (ETL) of ZnO/front charge confinement layer (CCL) of SiO<jats:sub>2</jats:sub>/active layer of low‐resistivity SiNC composite thin film/rear CCL of SiO<jats:sub>2</jats:sub>/hole transport layer (HTL) of MoO<jats:sub>3</jats:sub>/textured p‐Si substrate/rear electrode of aluminum/heat radiator. The main procedures for achieving high luminance here include combined applications of high‐pressure ammonia passivation of the active layer, which enhances its photoluminescence quantum yield significantly, and texturing of p‐Si substrate, which boosts the light extraction and charge injection effectively. With an optimized combination of passivation and texturing, luminance of 10751 cd m⁻<jats:sup>2</jats:sup> is achieved with external quantum efficiency (EQE) of 0.26%. After a Peltier cooler is further applied, luminance of 12363 cd m⁻<jats:sup>2</jats:sup> is attained with EQE of 0.30%. Following further technical iterations, this highly bright SiNC WLED shall find applications in monolithic integrated Si photonics and even Si general lighting.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"64 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143443280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wavefront shaping has revolutionized the control of light propagation through scattering media, transforming disordered speckles into highly focused optical spots. This breakthrough depends on the accurate and efficient retrieval of scattering matrices, which promises to unlock new possibilities in optical imaging, communication, and sensing. However, a major challenge persists: retrieving scattering matrices from direct intensity measurements, often hindered by the lack of effective prior knowledge or regularization constraints. In this study, we introduce the Gaussian-regularized adaptive statistical prior fast iterative shrinkage-thresholding algorithm (GRASP-FISTA), a novel method designed to overcome this challenge in phase retrieval for scattering media. By exploiting the statistical properties of scattering matrix elements—specifically their circular Gaussian distribution—we impose a robust statistical prior that enhances retrieval accuracy. Integrated with the Plug-and-Play FISTA framework, known for its rapid convergence, GRASP-FISTA offers an efficient and reliable solution to phase retrieval. Experimental validation on multimode fibers, ground glass, and chicken breast tissue demonstrates that GRASP-FISTA reduces iteration counts by 2–3 times, increases robustness against Gaussian noise, and improves reconstruction accuracy. By incorporating statistical constraints into gradient-descent-based methods, GRASP-FISTA significantly broadens the scope of phase retrieval, paving the way for new applications across diverse scattering processes.
{"title":"Retrieving Scattering Matrices With Gaussian Regularized Adaptive Statistical Prior","authors":"Zhengyang Wang, Daixuan Wu, Yuecheng Shen, Jiawei Luo, Jiajun Liang, Jiaming Liang, Zhiling Zhang, Dalong Qi, Yunhua Yao, Lianzhong Deng, Zhenrong Sun, Shian Zhang","doi":"10.1002/lpor.202500120","DOIUrl":"https://doi.org/10.1002/lpor.202500120","url":null,"abstract":"Wavefront shaping has revolutionized the control of light propagation through scattering media, transforming disordered speckles into highly focused optical spots. This breakthrough depends on the accurate and efficient retrieval of scattering matrices, which promises to unlock new possibilities in optical imaging, communication, and sensing. However, a major challenge persists: retrieving scattering matrices from direct intensity measurements, often hindered by the lack of effective prior knowledge or regularization constraints. In this study, we introduce the Gaussian-regularized adaptive statistical prior fast iterative shrinkage-thresholding algorithm (GRASP-FISTA), a novel method designed to overcome this challenge in phase retrieval for scattering media. By exploiting the statistical properties of scattering matrix elements—specifically their circular Gaussian distribution—we impose a robust statistical prior that enhances retrieval accuracy. Integrated with the Plug-and-Play FISTA framework, known for its rapid convergence, GRASP-FISTA offers an efficient and reliable solution to phase retrieval. Experimental validation on multimode fibers, ground glass, and chicken breast tissue demonstrates that GRASP-FISTA reduces iteration counts by 2–3 times, increases robustness against Gaussian noise, and improves reconstruction accuracy. By incorporating statistical constraints into gradient-descent-based methods, GRASP-FISTA significantly broadens the scope of phase retrieval, paving the way for new applications across diverse scattering processes.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"8 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shared entanglement can significantly amplify classical correlations between systems interacting over a limited quantum channel. A natural avenue is to use entanglement of the same dimension as the channel because this allows for unitary encodings, which preserve global coherence until a measurement is performed. Contrasting this, a distributed task based on a qubit channel is demonstrated, for which irreversible encoding operations can outperform any possible coherence-preserving protocol. This corresponds to using high-dimensional entanglement and encoding information by compressing one of the subsystems into a qubit. Demonstrating this phenomenon requires the preparation of a 4D maximally entangled state, the compression of two qubits into one and joint qubit-ququart entangled measurements, with all modules executed at near-optimal fidelity. A proof-of-principle experiment is reported that achieves the advantage by realizing separate systems in distinct and independently controlled paths of a single photon. This result demonstrates the relevance of high-dimensional entanglement and non-unitary operations for enhancing the communication capabilities of standard qubit transmissions.
{"title":"Compression of Entanglement Improves Quantum Communication","authors":"Yu Guo, Hao Tang, Jef Pauwels, Emmanuel Zambrini Cruzeiro, Xiao-Min Hu, Bi-Heng Liu, Yun-Feng Huang, Chuan-Feng Li, Guang-Can Guo, Armin Tavakoli","doi":"10.1002/lpor.202401110","DOIUrl":"https://doi.org/10.1002/lpor.202401110","url":null,"abstract":"Shared entanglement can significantly amplify classical correlations between systems interacting over a limited quantum channel. A natural avenue is to use entanglement of the same dimension as the channel because this allows for unitary encodings, which preserve global coherence until a measurement is performed. Contrasting this, a distributed task based on a qubit channel is demonstrated, for which irreversible encoding operations can outperform any possible coherence-preserving protocol. This corresponds to using high-dimensional entanglement and encoding information by compressing one of the subsystems into a qubit. Demonstrating this phenomenon requires the preparation of a 4D maximally entangled state, the compression of two qubits into one and joint qubit-ququart entangled measurements, with all modules executed at near-optimal fidelity. A proof-of-principle experiment is reported that achieves the advantage by realizing separate systems in distinct and independently controlled paths of a single photon. This result demonstrates the relevance of high-dimensional entanglement and non-unitary operations for enhancing the communication capabilities of standard qubit transmissions.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"15 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143417797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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