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One-step implementation of a multi-target-qubit controlled phase gate with cat-state qubits in circuit QED

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Frontiers of physics 2019年第2期14卷 13-21页

作者： You-Ji Fan zhen-fei zheng Yu Zhang Dao-Ming Lu Chui-Ping Yang College of Mechanic and Electronic Engineering Wuyi UniversityWuyishan 354300China CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China School of Physics Nanjing UniversityNanjing 210093China Quantum Information Research Center Shangrao Normal UniversityShangrao 334001China Department of Physics Hangzhou Normal UniversityHangzhou 310036China

We propose a single-step implementation of a muti-target-qubit controlled phase gate with one catstate qubit (cqubit) simultaneously controlling n — 1 target cqubits. The two logic states of a *** are represented by two orthogonal cat states of a single cavity mode. In this proposal, the gate is implemented with n microwave cavities coupled to a superconducting transnion qutrit. Because the qutrit remains in the ground state during the gate operation, decoherence caused due to the qutrit5s energy relaxation and dephasing is greatly suppressed. The gate implementation is quite simple because only a single-stcp operation is needed and neither classical pulse nor measurement is required. Numerical simulations demonstrate that high-fidelity realization of a controlled phase gate with one cqubit simultaneously con trolling two targe t cqubits is feasible with present circuit QED technology. This proposal can be extended to a wide range of physical systems to realize the proposed gate, such as multiple microwave or optical cavities coupled to a natural or artificial three-level atom.

关键词： circuit QED cat-state multi-target-qubit controlled phase gate

Optimizing the key parameter to accelerate the recovery of AMOC under a rapid increase of greenhouse gas forcing

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 39-45页

作者： Haolan Ren fei zheng Tingwei Cao Qiang Wang International Center for Climate and Environment Science(ICCES) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina College of Oceanography Hohai UniversityNanjingChina CAS Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of Sciences and Pilot National Laboratory for Marine Science and Technology(Qingdao)QingdaoChina

Atlantic Meridional Overturning Circulation(AMOC)plays a central role in long-term climate variations through its heat and freshwater transports,which can collapse under a rapid increase of greenhouse gas forcing in climate *** studies have suggested that the deviation of model parameters is one of the major factors in inducing inaccurate AMOC *** this work,with a low-resolution earth system model,the authors try to explore whether a reasonable adjustment of the key model parameter can help to re-establish the AMOC after its *** a new optimization strategy,the extra freshwater flux(FWF)parameter is determined to be the dominant one affecting the AMOC’s *** traditional ensemble optimal interpolation(EnOI)data assimilation and new machine learning methods are adopted to optimize the FWF parameter in an abrupt 4×CO_(2) forcing experiment to improve the adaptability of model parameters and accelerate the recovery of *** results show that,under an abrupt 4×CO_(2) forcing in millennial simulations,the AMOC will first collapse and then re-establish by the default FWF parameter ***,during the parameter adjustment process,the saltier and colder sea water over the North Atlantic region are the dominant factors in usefully improving the adaptability of the FWF parameter and accelerating the recovery of AMOC,according to their physical relationship with FWF on the interdecadal timescale.

关键词： Recovery of AMOC 4×CO_(2)forcing Key parameter Parameter estimation Data assimilation Machine learning

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盐城滩涂生态开发的主要生态道德规范探究

生态经济(学术版) 2007年第2期 390-393页

作者：刘振亚费正皓盐城师范学院盐城师范学院江苏盐城224002

盐城滩涂生态开发需遵循一定的生态道德规范,这是滩涂自然价值、自然权利实现的前提和保障。在现代生态人类中心主义指导下,滩涂生态开发应该遵循如下规范:遵循自然,尊重滩涂生命的规范;善待自然,反对滩涂环境法西斯主义的规范;以人为本... 详细信息

盐城滩涂生态开发需遵循一定的生态道德规范,这是滩涂自然价值、自然权利实现的前提和保障。在现代生态人类中心主义指导下,滩涂生态开发应该遵循如下规范:遵循自然,尊重滩涂生命的规范;善待自然,反对滩涂环境法西斯主义的规范;以人为本,生态利用天然资源,确保滩涂物种优先的规范;节约、保护滩涂自然资源,树立绿色生态开发的规范;践行滩涂生态美德伦理规范等。

关键词：现代生态人类中心论盐城滩涂开发生态道德规范

安徽省宁国市大里铅锌银多金属矿成矿条件及远景评价

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资源信息与工程 2020年第1期35卷 9-12页

作者：费振正安徽省地质矿产勘查局322地质队

安徽省宁国市大里铅锌银多金属矿地处皖浙赣深大断裂附近,宁国墩断裂西侧,刘村岩体之先仁寺单元西侧,内有多处古采矿遗迹和古冶炼渣分布。通过对区内成矿条件的分析,初步推断该区的成矿规律,总结了该区的成矿远景。

关键词：成矿条件远景评价成矿远景安徽省宁国市铅锌银多金属矿深大断裂成矿规律刘村岩体

Precise gradient separation of nanoparticles using reduced graphene oxide-polyoxomolybdate membranes

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Science China Chemistry 2025年第01期 209-216页

作者： Yixin Yang Wanlei Zhao Ruoxuan zheng Hongqiang Li Wei Chen Yu-fei Song State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Quzhou Institute for Innovation in Resource Chemical Engineering

The purification and size sieving of nanoparticles （NPs） represents a significant scientific ***,the r GO-polyoxometalates (POMs=PMo12,Mo132and Mo368) membranes were fabricated successfully via a simple and scalable POMsassisted in-situ photoreduction *** the mass ratio of r GO to PMo12was 1:30,the resultant r GO-PMo12membranes with highly ordered and uniform nanochannels of 1.0 nm can be obtained,which showed an accurate carbon quantum dots（CQDs） separation with a cut-off size approximately 1.0 *** increase of the size of the interlayered POMs from PMo12（1.0 nm）,{Mo132}（2.9 nm） to{Mo368}（3.8 nm）,the resultant r GO-PMo12,r GO-Mo132and r GO-Mo368exhibited precise gradient separation of CQDs and Au nanoparticles by size exclusion *** results pave a promising way to construct new twodimensional （2D） membranes for highly efficient size-selective separation.

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EBSD parameter assessment and constitutive models of crept HR3C austenitic steel

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Journal of Iron and Steel Research International 2023年第4期30卷 772-781页

作者： Jie Zhang zheng-fei Hu zhen Zhang Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials School of Materials Science and EngineeringTongji UniversityShanghai 201804China School of Materials Science and Engineering Nanjing Institute of TechnologyNanjing 211167JiangsuChina

Creep damage and evolution of HR3C steel at 650℃ were investigated using electron backscatter diffraction(EBSD),and EBSD-based parameter assessments were *** analyses show that the grain size is almost unchanged and no obvious texture formed after creep at different creep *** lowest proportion of low Σ coincidence site lattice grain boundaries under 150 MPa implies that the primary twin structures are preserved under the low stress level,while some twin structures evolved into general grain boundaries at the high creep *** main damage features of microcracks and cavities can be seen along the grain boundaries:the former emerged at higher stress levels,while the latter appeared at the lower stress level,and both were shown under medium *** contrast shows that the most severe creep damage is present at 170 *** implies that the creep mechanism differs distinctly under different stress levels,and the transition point is around 170 *** average misorientation is better to describe the local plastic deformation related to the strain distribution while grain reference orientation deviation describes the inhomogeneous strain *** lifetime prediction models including the isothermal method,Larson-Miller parameter method and Monkman–Grant relation were evaluated by the experimental data and literature data,and they are valid for predicting creep behavior.

关键词： Austenitic heat-resistant steel Creep damage Electron backscatter diffraction Creep constitutive model Creep lifetime prediction

无人直升机航磁方法在安徽省马鞍山市向山南—大甸塘地区铁矿普查中的应用

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物探与化探 2021年第4期45卷 890-897页

作者：陈伟赵国凤费振正罗丁彭江英黄岩贾朔江苏省地质勘查技术院江苏南京210049 安徽省地质矿产勘查局322地质队安徽马鞍山243000

本文以宁芜火山盆地向山南—大甸塘地区为例,利用地质、无人直升机航磁等方法进行老矿山深部及外围找矿工作的探索。通过对航磁异常进行综合分析和精细反演来确定钻孔位置。布设的所有钻孔均在老矿山深部见矿,该结果证明了本方法的有效... 详细信息

本文以宁芜火山盆地向山南—大甸塘地区为例,利用地质、无人直升机航磁等方法进行老矿山深部及外围找矿工作的探索。通过对航磁异常进行综合分析和精细反演来确定钻孔位置。布设的所有钻孔均在老矿山深部见矿,该结果证明了本方法的有效性,为今后类似工作条件的地区快速有效开展老矿山深部及外围找矿工作提供参考。

关键词：无人直升机航磁铁矿老矿山

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基于耦合界面键合效应的石墨烯磨损研究

原子与分子物理学报 2025年第6期42卷 66-75页

作者：郑云飞卢艳武汉科技大学冶金装备及其控制教育部重点实验室武汉430081 武汉科技大学机械传动与制造工程湖北省重点实验室武汉430081 武汉科技大学精密制造研究院武汉430081

石墨烯作为二维固体润滑材料,其超滑特性不仅是物理作用结果,其化学键结构机制下的摩擦化学现象,是深入理解石墨烯摩擦性能的关键.本文采用分子动力学(MD)方法构建了多重层数石墨烯增强不同粗糙形貌的金属基底模型,实现了其与金刚石尖... 详细信息

石墨烯作为二维固体润滑材料,其超滑特性不仅是物理作用结果,其化学键结构机制下的摩擦化学现象,是深入理解石墨烯摩擦性能的关键.本文采用分子动力学(MD)方法构建了多重层数石墨烯增强不同粗糙形貌的金属基底模型,实现了其与金刚石尖端滑动过程的动态分析,揭示了考虑尖端与石墨烯之间存在界面键时石墨烯层的理化耦合作用下的磨损机理.研究结果表明:当考虑金刚石尖端与石墨烯之间化学键合时,石墨烯发生磨损破裂的临界载荷相对于不考虑界面化学键时的值减小,这是由于界面键的形成会剥离石墨烯导致石墨烯断裂所致;金属基底的粗糙度也是决定石墨烯发生磨损破裂时临界载荷的重要因素之一,当粗糙度增大,临界载荷减小,同时通过增加石墨烯层的层数(增韧)来提高石墨烯发生磨损破裂失效的临界载荷.

关键词：石墨烯层界面键分子动力学磨损破裂

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Dual Attribute Adversarial Camouflage toward camouflaged object detection

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Defence Technology（防务技术） 2023年第4期22卷 166-175页

作者： Yang Wang zheng Fang Yun-fei zheng zhen Yang Wen Tong Tie-yong Cao Institute of Command and Control Engineering Peoples Liberation Army Engineering UniversityNanjing210007China The Army Artillery and Defense Academy of PLA Nanjing210007China PLA University of Foreign Language Luoyang471000China

The object detectors can precisely detect the camouflaged object beyond human *** investigations reveal that the CNNs-based(Convolution Neural Networks)detectors are vulnerable to adversarial *** works can fool detectors by crafting the adversarial camouflage attached to the object,leading to wrong *** is hard for military operations to utilize the existing adversarial camouflage due to its conspicuous *** by this,this paper proposes the Dual Attribute Adversarial Camouflage(DAAC)for evading the detection by both detectors and *** DAAC includes two steps:(1)Extracting features from a specific type of scene to generate individual soldier digital camouflage;(2)Attaching the adversarial patch with scene features constraint to the individual soldier digital camouflage to generate the adversarial attribute of *** visual effects of the individual soldier digital camouflage and the adversarial patch will be improved after integrating with the scene *** results show that objects camouflaged by DAAC are well integrated with background and achieve visual concealment while remaining effective in fooling object detectors,thus evading the detections by both detectors and humans in the digital *** work can serve as the reference for crafting the adversarial camouflage in the physical world.

关键词： Adversarial camouflage Digital camouflage generation Visual concealment Object detection Adversarial patch