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Topologically protecting squeezed light on a photonic chip

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Photonics Research 2022年第2期10卷 456-464页

作者： Ruo-jing Ren Yong-Heng Lu Ze-Kun Jiang Jun Gao Wen-Hao Zhou Yao Wang Zhi-Qiang Jiao Xiao-Wei Wang Alexander S.Solntsev xian-min jin Center for Integrated Quantum Information Technologies(IQIT) School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and NetworksShanghai Jiao Tong UniversityShanghai 200240China CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China School of Mathematical and Physical Sciences University of Technology SydneyUltimoNew South Wales 2007Australia TuringQ Co. Ltd.Shanghai 200240China

Squeezed light is a critical resource in quantum sensing and information processing. Due to the inherently weak optical nonlinearity and limited interaction volume, considerable pump power is typically needed to obtain efficient interactions to generate squeezed light in bulk crystals. Integrated photonics offers an elegant way to increase the nonlinearity by confining light strictly inside the waveguide. For the construction of large-scale quantum systems performing many-photon operations, it is essential to integrate various functional modules on a chip. However, fabrication imperfections and transmission cross talk may add unwanted diffraction and coupling to other photonic elements, reducing the quality of squeezing. Here, by introducing the topological phase, we experimentally demonstrate the topologically protected nonlinear process of four-wave mixing, enabling the generation of squeezed light on a silica chip. We measure the cross-correlations at different evolution distances for various topological sites and verify the nonclassical features with high fidelity. The squeezing parameters are measured to certify the protection of cavity-free, strongly squeezed states. The demonstration of topological protection for squeezed light on a chip brings new opportunities for quantum integrated photonics,opening novel approaches for the design of advanced multi-photon circuits.

关键词： topological squeezed quantum

Topologically Protected Polarization Quantum Entanglement on a Photonic Chip

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Chip 2022年第1期1卷 14-18页

作者： Yao Wang Yong-Heng Lu Jun Gao Yi-Jun Chang Ruo-jing Ren Zhi-Qiang Jiao Zhe-Yong Zhang xian-min jin Center for Integrated Quantum Information Technologies(IQIT) School of Physics and Astronomy and State Key Laboratory of Advanced Optical Com-munication Systems and NetworksShanghai Jiao Tong UniversityShanghai 200240China CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics University of Science and Technol-ogy of ChinaHefeiAnhui 230026China

Quantum entanglement,as the strictly non-classical phenomenon,is the kernel of quantum computing and quantum simulation,and has been widely applied ranging from fundamental tests of quantum physics to quantum information ***,the topolog-ical phase is found inherently capable of protecting physical fields from unavoidable fabrication-induced disorder,which inspires the po-tential application of topological protection to quantum ***,we present the experimental demonstration of topologically protected quantum entangled states on a photonic *** process tomogra-phy shows that quantum entanglement can be well preserved by the topological states even when the chip material introduces disorder and relative polarization rotation in phase *** work links the fields of materials,topological science and quantum physics,opening the door to wide applications of topological enhancement in quantum regime.

关键词： Photonic chip Quantum entanglement Topological photonics

Quantum photonics: feature introduction

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Photonics Research 2019年第12期7卷 I0001-I0002页

作者： xian-min jin M.S.KIM BRIAN J.SMITH School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong UniversityShanghai 200240China QOLS Blackett LaboratoryImperial College LondonLondon SW72AZUK Department of Physics and Oregon Center for Optical Molecularand Quantum ScienceUniversity of OregonEugeneOregon 97403USA

Photons,the individual quanta of the light field,are what the science of quantum photonics is dedicatedly *** manipulation and coherent control of photons in quantum photonics enables the exploration of various quantum phenomena of high fundamental *** the meantime,due to the fast speed and a lack of the interaction with the environment,photons are now regarded as a promising platform for the emerging quantum information processing(QIP)***,there is a growing number of works on quantum computing,quantum communication,and quantum metrology that are solidly based on the techniques of quantum photonics.

关键词： quantum coherent enable

Hemoglobin loss method calculates blood loss during pancreaticoduodenectomy and predicts bleeding-related risk factors

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World Journal of Gastrointestinal Surgery 2024年第2期16卷 419-428页

作者： Chao Yu Yi-min Lin Guo-Zhe xian Department of Hepatobiliary Surgery Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250021Shandong ProvinceChina

BACKGROUND The common clinical method to evaluate blood loss during pancreaticoduoden-ectomy(PD)is visual inspection,but most scholars believe that this method is extremely subjective and ***,there is no accurate,objective me-thod to evaluate the amount of blood loss in PD *** retrospectively analyzed the clinical data of 341 patients who underwent PD in Shandong Provincial Hospital from March 2017 to February *** to different surgical methods,they were divided into an open PD(OPD)group and a laparoscopic PD(LPD)*** differences and correlations between the in-traoperative estimation of blood loss(IEBL)obtained by visual inspection and the intraoperative calculation of blood loss(ICBL)obtained using the Hb loss method were ***,IEBL and perioperative calculation of blood loss(PCBL)were compared between the two groups,and single-factor regression analysis was *** There was no statistically significant difference in the preoperative general patient information between the two groups(P>0.05).PD had an ICBL of 743.2(393.0,1173.1)mL and an IEBL of 100.0(50.0,300.0)mL(P200μmol/L(95%CI:7.09-644.26;P=0.045)were independent risk factors for *** ICBLs of the LPD group and OPD group were 767.7(435.4,1249.0)mL and 663.8(347.7,1138.2)mL,respectively(P>0.05).The IEBL of the LPD group 200.0(50.0,200.0)mL was slightly greater than that of the OPD group 100.0(50.0,300.0)mL(P>0.05).PCBL was greater in the LPD group than the OPD group[1061.6(612.3,1632.3)mL vs 806.1(375.9,1347.6)mL](P<0.05).CONCLUSION The ICBL in patients who underwent PD was greater than

关键词： Pancreaticoduodenectomy Hemoglobin loss Calculated blood loss Estimated blood loss

Underwater photon-inter-correlation optical communication

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Photonics Research 2021年第12期9卷 2360-2368页

作者： ZENG-QUAN YAN CHENG-QIU HU ZHAN-minG LI ZHONG-YUAN LI HANG ZHENG xian-min jin Center for Integrated Quantum Information Technologies(IQIT) School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and NetworksShanghai Jiao Tong UniversityShanghai 200240China CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Beijing Institute of Astronautical Systems Engineering Beijing 100076China TuringQ Co. Ltd.Shanghai 200240China

High-capacity,long-distance underwater optical communication enables a global scale optical network covering orbit,land,and *** communication using photons as carriers has a high channel capacity;however,the light scattering and absorption of water lead to an inevitable huge channel loss,setting an insurmountable transmission distance for existing underwater optical communication ***,we experimentally demonstrate the photon-inter-correlation optical communication(PICOC)in air-water *** retrieve additional internal correlation resources from the sparse single-photon stream with high *** successfully realize the 105-m-long underwater optical communication against a total loss up to 120.1 d B using only a microwatt *** demonstrated underwater light attenuation is equivalent to the loss of 883-m-long Jerlov type I water,encouraging the practical air-water optical communication to connect deeper underwater worlds.

关键词： underwater photon mount

Experimental quantum simulation of dynamic localization on curved photonic lattices

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Photonics Research 2022年第6期10卷 1430-1439页

作者： HAO TANG TIAN-YU WANG ZI-YU SHI ZHEN FENG YAO WANG XIAO-WEN SHANG JUN GAO ZHI-QIANG JIAO ZHAN-minG LI YI-JUN CHANG WEN-HAO ZHOU YONG-HENG LU YI-LIN YANG RUO-jinG REN LU-FENG QIAO xian-min jin Center for Integrated Quantum Information Technologies(IQIT) School of Physics and AstronomyState Key Laboratory of Advanced Optical Communication Systems and NetworksShanghai Jiao Tong UniversityShanghai 200240China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China TuringQ Co. Ltd.Shanghai 200240China

Dynamic localization,which originates from the phenomena of particle evolution suppression under an externally applied AC electric field,has been simulated by suppressed light evolution in periodically curved photonic ***,experimental studies on their quantitative dynamic transport properties and application for quantum information processing are *** we fabricate one-dimensional and hexagonal two-dimensional arrays both with sinusoidal *** successfully observe the suppressed single-photon evolution patterns,and for the first time,to the best of our knowledge,measure the variances to study their transport *** onedimensional arrays,the measured variances match both the analytical electric-field calculation and the quantum walk Hamiltonian engineering *** hexagonal arrays as anisotropic effective couplings in four directions are mutually dependent,the analytical approach suffers,whereas quantum walk conveniently incorporates all anisotropic coupling coefficients in the Hamiltonian and solves its exponential as a whole,yielding consistent variances with our experimental ***,we implement a nearly complete localization to show that it can preserve both the initial injection and the wave packet after some evolution,acting as a memory of a flexible time scale in integrated *** demonstrate a useful quantum simulation of dynamic localization for studying their anisotropic transport properties and a promising application of dynamic localization as a building block for quantum information processing in integrated photonics.

关键词： properties quantum curved

Quantum advantage with membosonsampling

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Chip 2022年第2期1卷 1-6页

作者： Jun Gao Xiao-Wei Wang Wen-Hao Zhou Zhi-Qiang Jiao Ruo-jing Ren Yu-Xuan Fu Lu-Feng Qiao Xiao-Yun Xu Chao-Ni Zhang Xiao-Ling Pang Hang Li Yao Wang xian-min jin Center for Integrated Quantum Information Technologies(IQIT) School of Physics and Astronomy and State Key Laboratory of Advanced Optical Com-munication Systems and NetworksShanghai Jiao Tong UniversityShanghai 200240China CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefeiAnhui 230026China

Quantum computer,harnessing quantum superposition to boost a parallel computational power,promises to outperform its classical counterparts and offer an exponentially increased *** term“quantum advantage”was proposed to mark the key point when peo-ple can solve a classically intractable problem by artificially control-ling a quantum system in an unprecedented scale,even without er-ror correction or known practical *** sampling,a problem about quantum evolutions of multi-photons on multimode photonic networks,as well as its variants,has been considered as a promising candidate to reach this ***,the current photonic platforms suffer from the scaling problems,both in pho-ton numbers and circuit ***,we propose a new variant of the problem,membosonsampling,exploiting the scaling of the prob-lem can be in principle extended to a large *** experimentally verify the scheme on a self-looped photonic chip inspired by mem-ristor,and obtain multi-photon registrations up to 56-fold in 750,000 modes with a Hilbert space up to *** results exhibit an inte-grated and cost-efficient shortcut stepping into the“quantum advan-tage”regimeina photonic systemfarbeyondpreviousscenarios,and provide a scalable and controllable platform for quantum information processing.

关键词： quantum scaling boson

Prediction of suitable water content in granulation of sintering mixture based on Litster's model

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Journal of Iron and Steel Research(International) 2024年第3期31卷 552-560页

作者： Fang-lei Dai Xiao-hui Fan Xiao-xian Huang Xu-ling Chen min Gan Zhi-yun Ji Zeng-qing Sun School of minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina

Suitable water content plays a decisive role in the granulation of sintering ***,a method was proposed to predict the suitable water content for effective granulation on the basis of Litster's granulation *** granulation effectiveness of a sintering mixture was predicted by the model,with the allowance error of±10%.The effects of the water absorption properties,particle size composition and content of adhesive particles on the suitable water content were *** results showed that the allowable error of prediction was within±0.5%compared to the experimentally determined suitable water *** an increase in adhesive powder content of mixtures with higher water absorption,the suitable water content increased to achieve similar granulation ***,as the amount of concentrates increased,the suitable water content first increased and then remained *** influence of the water absorption characteristics of the adhesive particles on the suitable water content was less than that of their particle size composition in the mixture.

关键词： Adhesive particle Sintering mixture Granulation effectiveness Suitable water content

Application of UiO-66 and its composites for remediation and resource recovery of typical environmental contaminants:a review

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Rare Metals 2024年第6期43卷 2498-2526页

作者： Hui-min Zhang Yun-Long Wang Xin-Feng Zhu Zhen-Zhen Huang Dan-Dan Pang Kai Wang Chao-Hai Wang Zhong-xian Song Shi-Qiang Yin Lin-Lin Chang jin-Hui Zhang School Infirmary Henan University of Urban ConstructionPingdingshan 467036China Faculty of Environmental and Municipal Engineering Henan Key Laboratory of Water Pollution Control and Rehabilitation TechnologyKey Laboratory of Carbon Emission Reduction and Combined Air Pollution Control TechnologyHenan University of Urban ConstructionPingdingshan 467036China School of Resources&Environment Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic RegionHenan Polytechnic UniversityJiaozuo 454003China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationGuangzhou Higher Education Mega CentreSouth China University of TechnologyGuangzhou 510006China

UiO-66 series metal-organic framework materials(MOFs)are typical porous materials assembled by Zr^(4+) with a large mass-to-nucleus ratio and terephthalic acid ligands,which form tetrahedral and octahedral cages arranged in a periodic triangular window *** to the strong interaction between Zr and O,UiO-66 series MOFs exhibit high thermal stability,structural stability,and chemical *** article mainly reviews the applications of UiO-66 and its composites in adsorption,photocatalysis,and resource utilization,while exploring the harm of pollutants to human health and the *** the first part,the differences in adsorption and removal mechanisms of liquid organic pollutants,heavy metals,and volatile organic compounds(VOCs)are *** results show that organic pollutants are mainly removed by physical adsorption,electrostatic interactions,hydrogen bonding,andπ-πinteractions,while heavy metals are mainly removed by chemical adsorption,electrostatic interactions,reduction,and *** are mainly removed by the pore volume and pore size structure of the *** catalysis can achieve non-toxic treatment of pollutants,and this study mainly focuses on UiO-based composite materials constructed by strategies such as semiconductor composites,ion doping,and metal/dye *** the second part,the synergistic effect between the components of UiO-based composite materials promotes the oriented and rapid separation and transfer of earriers at the material interface,thereby promoting the generation of active species such as h^(+),·O_(2)^(-) and·OH,and achieving rapid degradation of pollutants and detoxification of heavy *** the third part,heterojunctions can realize the resource utilization of pollutants in water and air,producing energy-type substances such as hydrogen and methanol while solving environmental *** addition,this article also summarizes the harm of common typical pollutants to the environment

关键词： UiO Adsorption Photocatalysis Environmental pollution Resource recovery