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Photonics Research 2024年第10期12卷 2249-2256页

作者： YU-FANG yaNG MING-YUAN CHEN FENG-PEI LI ya-ping ruan ZHI-XIANG LI MIN XIAO HAN ZHANG KE-YU XIA National Laboratory of Solid State Microstructures School of PhysicsCollege of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China Department of Physics University of ArkansasFayettevilleArkansas 72701USA Hefei National Laboratory Hefei 230088China

The orbital angular momentum(OAM)of photons provides a pivotal resource for carrying out high-dimensional classical and quantum information processing due to its unique discrete high-dimensional *** cyclic transformation of a set of orthogonal OAM modes is an essential building block for universal high-dimensional information *** realization in the quantum domain is the universal quantum Pauli-X *** this work,we experimentally demonstrate a cyclic transformation of six OAM modes with an averaged efficiency higher than 96%by exploiting a nonreciprocal Mach–Zehnder *** system is simple and can,in principle,be scaled to more *** improving phase stabilization and inputting quantum photonic states,this method can perform universal single-photon quantum Pauli-X gate,thus paving the way for scalable highdimensional quantum computation.

关键词： interferometer quantum transformation

Liquid crystal devices for vector vortex beams manipulation and quantum information applications [Invited]

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Chinese Optics Letters 2021年第11期19卷 124-132页

作者： Zhi-Xiang Li ya-ping ruan Peng Chen Jie Tang Wei Hu Ke-Yu Xia yan-Qing Lu National Laboratory of Solid State Microstructures College of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China School of Science Nantong UniversityNantong 226019China

Vector vortex beams(VVBs) have attracted significant attention in both classical and quantum optics. Liquid crystal(LC),beyond its applications in information display, has emerged as a versatile tool for manipulating VVBs. In this review, we focus on the functions and applications of typical LC devices in recent studies on controlling the space-variant polarized vortex light. Manipulation of VVBs through patterned nematic LC optical elements, patterned cholesteric LC optical elements, self-assembled defects, and LC spatial light modulators is discussed separately. Moreover, LC-based novel optical applications in the field of quantum information are reviewed.

关键词： liquid crystal vector beam q-plate orbital angular momentum entanglement two-photon interference

Reversible Optical Isolators and Quasi-Circulators Using a Magneto-Optical Fabry-Pérot Cavity

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Chinese Physics Letters 2024年第4期41卷 59-68页

作者：张天天周文鹏李志向唐宇涛许帆吴浩东张涵唐江山阮亚平夏可宇 College of Engineering and Applied Sciences National Laboratory of Solid State Microstructuresand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China Shenzhen Shaanxi Coal Hi-tech Research Institute Co. LtdShenzhen 518083China School of Physics Nanjing UniversityNanjing 210023China Jiangsu Key Laboratory of Artificial Functional Materials Nanjing UniversityNanjing 210023China

Nonreciprocal optical devices are essential for laser protection,modern optical communication and quantum information processing by enforcing one-way light *** conventional Faraday magneto-optical nonreciprocal devices rely on a strong magnetic field,which is provided by a permanent *** a result,the isolation direction of such devices is fixed and severely restricts their applications in quantum *** this work,we experimentally demonstrate the simultaneous one-way transmission and unidirectional reflection by using a magneto-optical Fabry-Pérot cavity and a magnetic field strength of 50 *** optical isolator and a three-port quasi-circulator are realized based on this nonreciprocal cavity *** isolator achieves an isolation ratio of up to 22 dB and an averaged insertion loss down to 0.97 *** quasi-circulator is realized with a fidelity exceeding 99% and an overall survival probability of 89.9%,corresponding to an insertion loss of~0.46 *** magnetic field is provided by an electromagnetic coil,thereby allowing for reversing the light circulating *** reversible quasi-circulator paves the way for building reconfigurable quantum networks.

关键词： quantum reciprocal insertion

High-dimensional entanglement generation based on a Pancharatnam–Berry phase metasurface

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Photonics Research 2022年第12期10卷 2702-2707页

作者： ZHI-XIANG LI DONG ZHU PEI-CHENG LIN PENG-CHENG HUO HONG-KUAN XIA MING-ZE LIU ya-ping ruan JIANG-SHAN TANG MIAO CAI HAO-DONG WU CHAO-YING MENG HAN ZHANG PENG CHEN TING XU KE-YU XIA LI-JIAN ZHANG yaN-QING LU National Laboratory of Solid State Microstructures College of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China Hefei National Laboratory Hefei230088China Shishan Laboratory Suzhou Campus of Nanjing UniversitySuzhou 215000China

High-dimensional entanglement is of great importance in quantum communications and can be realized by encoding information on multiple degrees of freedom(Do Fs)of the ***,the realization of such high-dimensional entanglement involves different combinations of bulky optical *** this work,we present the use of a single dielectric metasurface to generate high-dimensional entanglement by modulating multi-Do Fs of *** sending one of the polarization-entangled photons to interact with the metasurface,we encode path,spin angular momentum,and orbital angular momentum information to the original *** achieve a four-qubit quantum state in the *** verify it,we experimentally demonstrate the nonlocal correlations between the two photons by recording the correlated images,and we also perform a quantum state tomography *** scheme can be applied to on-chip quantum state manipulation,which is promising in quantum communication with integrated components.

关键词： quantum momentum angular

Accurate quantification of the algebraic,multiplicative algebraic,and simultaneous iterative reconstruction techniques in ionosphere rebuilding based on the TIEGCM assessment

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Earth and Planetary Physics 2025年第1期9卷 117-126页

作者： Ao Qi HaiBing ruan Institute of Space Weather Nanjing University of Information Science and TechnologyNanjing 210044China Key Laboratory of Geospace Environment University of Science&Technology of ChinaChinese Academy of SciencesHefei 230026China

The algebraic reconstruction technique(ART),multiplicative algebraic reconstruction technique(MART),and simultaneous iterative reconstruction technique(SIRT)are computational methodologies extensively utilized within the field of computerized ionospheric tomography(CIT)to facilitate three-dimensional reconstruction of the ionospheric ***,reconstruction accuracy elicits recurrent disputes over its practical application,and people usually attribute this issue to incomplete and uneven coverage of the *** Thermosphere Ionosphere Electrodynamics General Circulation Model(TIEGCM)offers a reasonable physics-based ionospheric background and is widely utilized in ionospheric *** use the TIEGCM simulations as the targeted ionosphere because the current measurements are far from able to realistically reproduce the ionosphere in *** designations of satellite measurements are conducted to investigate the limiting performance of CIT methods in ionospheric *** to common practice,electron density distributions from outputs of the International Reference Ionosphere(IRI)model are used as the iterative initial value in CIT *** outcomes suggest that despite data coverage,iterative initial conditions also play an essential role in ionospheric *** particular,in the longitudinal sectors where the iterative initial height of the F2-layer peak electron density(hmF2)differs substantially from the background densities,none of the three CIT methods can reproduce the exact background *** hmF2 is close but the ionospheric F2-layer peak density(NmF2)is different between the targeted background and initial conditions,the MART performs better than the ART and SIRT,as evidenced by the correlation coefficients of MART being above 0.97 and those of ART and SIRT being below *** summary,this investigation reveals the potential uncertainties in traditional CIT reconstruction,particularly when reali

关键词： computerized ionospheric tomography International Reference Ionosphere model Thermosphere Ionosphere Electrodynamics General Circulation model ionosphere

Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑Life Lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-Min Qin Zhongliang Li Wen‑Xia Su Jia‑Min Hu Hanqin Zou Zhixuan Wu Zhiqin ruan Yue‑Peng Cai Kang Li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of Li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high Li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous Li+flux Lithium metal battery

Surpassing the standard quantum limit of optical imaging via deep learning

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Chinese Optics Letters 2023年第8期21卷 71-78页

作者：蔡淼李志向吴浩东阮亚平唐磊唐江山陈明远张涵夏可宇肖敏陆延青 College of Engineering and Applied Sciences National Laboratory of Solid State MicrostructuresNanjing UniversityNanjing 210023China School of Physics Nanjing UniversityNanjing 210023China Department of Physics University of ArkansasFayettevilleArkansas 72701USA Hefei National Laboratory Hefei 230088China Jiangsu Key Laboratory of Artificial Functional Materials Nanjing UniversityNanjing 210023China

The sensitivity of optical measurement is ultimately constrained by the shot noise to the standard quantum *** has become a common concept that beating this limit requires quantum resources.A deep-learning neural network free of quantum principle has the capability of removing classical noise from images,but it is unclear in reducing quantum *** a coincidence-imaging experiment,we show that quantum-resource-free deep learning can be exploited to surpass the standard quantum limit via the photon-number-dependent nonlinear feedback during *** an effective classical light with photon flux of about 9×10^(4) photons per second,our deep-learning-based scheme achieves a 14 dB improvement in signal-to-noise ratio with respect to the standard quantum limit.

关键词： standard quantum limit machine learning optical imaging

The CalderSn-Zygmund Decomposition and Interpolation on Weighted Hardy Spaces

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Acta Mathematica Sinica,English Series 2011年第10期27卷 1967-1978页

作者： Zhuo ping ruan Department of Mathematics Beijing Normal University Beijing 100875 P. R. China

We apply discrete Littlewood Paley Stein theory, developed by Han and Lu, to establish Calderon Zygmund decompositions and interpolation theorems on weighted Hardy spaces Hp for w C A∞ in both the one-parameter and t... 详细信息

关键词： Calderdn Zygmund decomposition interpolation weighted Hardy spaces discrete Little- wood Paley analysis

玉米大豆间作对喀斯特区土壤理化性质及微生物碳代谢特征的影响

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作物学报 2025年第1期51卷 273-284页

作者：钱玉平宿兵兵高吉星阮粉花李亚伟茅林春滇西应用技术大学普洱茶学院云南普洱665000 兰州交通大学环境与市政工程学院甘肃兰州730070 甘肃省农业科学院作物研究所甘肃兰州730070 浙江大学生物系统工程与食品科学学院浙江杭州310000

为探明喀斯特区玉米大豆带状复合种植对土壤理化性质及微生物群落结构多样性的影响,本研究设置玉米大豆间作(MSI)、玉米单作(MM)和大豆单作(SM) 3种模式,采用Biolog-ECO微孔培养法,旨在揭示玉米大豆种植模式对土壤微生物碳源代谢活性、... 详细信息

为探明喀斯特区玉米大豆带状复合种植对土壤理化性质及微生物群落结构多样性的影响,本研究设置玉米大豆间作(MSI)、玉米单作(MM)和大豆单作(SM) 3种模式,采用Biolog-ECO微孔培养法,旨在揭示玉米大豆种植模式对土壤微生物碳源代谢活性、多样性以及土壤性质的影响及其机制。结果表明,与MM及SM相比, MSI土壤微生物群落丰富度指数(McIntoshindex)分别显著提高了11.90%和58.40%,平均颜色变化率(averagewellcolordevelopment, AWCD)分别显著增加了24.50%和80.10%,羧酸类、氨基酸类和酚酸类碳源的平均相对吸光度分别显著提高了34.50%、63.70%和61.80%;碳源代谢指纹图谱表明,MSI模式中土壤微生物通过提高衣康酸的代谢活性进而增加了对羧酸类碳源的利用,通过提高L-苯丙氨酸、L-苏氨酸和甘氨酰-L-谷氨酸的代谢活性从而增加了氨基酸类碳源利用,通过提高吐温40、吐温80和肝糖的代谢活性从而增加了对多聚类碳源的利用;同时, MSI处理土壤SOC分别较MM和SM显著提高8.50%和72.84%, NH_4~+-N和TN含量分别较SM处理显著增加46.70%和33.30%;主成分分析表明,提取的2个主成分解释了碳源利用总变异的79.69%,种植模式对碳源代谢的综合利用能力表现为MSI>MM>SM,其中MSI土壤微生物群落对羧酸类、氨基酸类和多聚类代谢利用能力最强;冗余分析则表明,显著影响碳源代谢利用的2个环境因子分别是TN (53.50%)和SOC (30.90%),其中TN促进了羧酸类和氨基酸类碳源的代谢利用, SOC加强了胺类和酚酸类碳源的利用。综上可见,玉米大豆间作模式土壤微生物碳代谢的偏好性主要由微生物群落结构多样性引起,同时又受土壤全氮和有机质含量的调控,表明微生物群落结构与土壤理化因子间的互作可能是大豆玉米复合种植增产增效的一个关键因素。

关键词：玉米大豆土壤微生物碳源代谢活性土壤理化性质 Biolog-ECO

The Inversionless Amplification in a Tripod System of SrRb Atoms in a Magneto-optical Trap

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Chinese Physics Letters 2014年第4期31卷 33-36页

作者： SUN Zhen JIA Feng-Dong LV Shuang-Fei ruan ya-ping QING Bo XUE ping XU Xiang-yuan DAI Xing-Can ZHONG Zhi-ping School of Physics University of Chinese Academy of Sciences Beijing 100049 State Key Laboratory of Low-dimensional Quantum Physics Department of PhysicsTsinghua University and Collaborative Innovation Center of Quantum M~tter Beijing 100084 Research Center of Laser Fusion China Academy of Engineering Physics Mianyang 621900 Department of Physics Capital Normal University Beijing 100037

The probe transmission spectra around the atomic transition 52S1/2,F = 2 → 52P3/2,F = 2 of 87Rb are measured in a magneto-optical trap by adding a coupling field around the atomic transition 52S1/2, F = 2 → 52 P3/2, F1 = 2. The inversionless amplification is observed in the spectrum over the atomic transition 5 2 S1/2, F = 2 → 52pa/2, Fr = 2. The tripod eleetromagnetically induced transparency is proposed to account for the ampli- fication feature, in which population distributions among these related atomic levels play an important role.

关键词： MAGNETOOPTICS ATOMIC transitions COUPLING reactions (Chemistry) AMPLIFICATION reactions ELECTROMAGNETIC interactions