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High-dimensional quantum information processing on programmable integrated photonic chips

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Science China(Information Sciences) 2023年第8期66卷 5-22页

作者： Yulin CHI Yue YU Qihuang GONG Jianwei WANG State Key Laboratory for Mesoscopic Physics School of Physics Peking University Frontiers Science center for Nano-optoelectronics and collaborative innovation center of Quantum Matter Peking University Peking University Yangtze Delta Institute of optoelectronics collaborative innovation center of Extreme Optics Shanxi University Hefei National Laboratory

This study reviews the recent progress of high-dimensional quantum information processing with photons. We first introduce the basic language of high-dimensional quantum information, including the representation of quantum dits(qudits), unitary operations of qudit states, and the general format of quantum algorithms with qudits. We discuss experimental implementations of high-dimensional quantum information processing and quantum computing in photonic systems, particularly in integrated quantum photonic platforms. We also discuss how qudit-based quantum photonic devices and systems can be adopted for further improving qubit-based quantum computation and quantum simulation.

关键词： high-dimensional quantum information processing quantum computation integrated quantum photonics

High-precision three-dimensional Rydberg atom localization in a four-level atomic system

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Chinese Physics B 2021年第5期30卷 348-352页

作者： Hengfei Zhang Jinpeng Yuan Lirong Wang Liantuan Xiao Suo-tang Jia State Key Laboratory of Quantum Optics and Quantum Optics devices Institute of Laser SpectroscopyShanxi UniversityTaiyuan 030006China collaborative innovation center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Rydberg atoms have been widely investigated due to their large size,long radiative lifetime,huge polarizability and strong dipole-dipole *** position information of Rydberg atoms provides more possibilities for quantum optics research,which can be obtained under the localization *** study the behavior of three-dimensional(3D)Rydberg atom localization in a four-level configuration with the measurement of the spatial optical *** atomic localization precision depends strongly on the detuning and Rabi frequency of the involved laser fields.A 100%probability of finding the Rydberg atom at a specific 3D position is achieved with precision of~0.031λ.This work demonstrates the possibility for achieving the 3D atom localization of the Rydberg atom in the experiment.

关键词： Rydberg atom three-dimensional localization standing-wave field

Pressure-mediated contact quality improvement between monolayer MoS_2 and graphite

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Chinese Physics B 2019年第1期28卷 178-182页

作者： Mengzhou Liao Luojun Du Tingting Zhang Lin Gu Yugui Yao Rong Yang Dongxia Shi Guangyu Zhang CAS Key Laboratory of Nanoscale Physics and devices Institute of Physics Chinese Academy of Sciences School of Physical Sciences University of Chinese Academy of Sciences Department of Electronics and Nanoengineering Aalto University Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelecentronic Systems School of PhysicsBeijing Institute of Technology Beijing Key Laboratory for nanomaterials and Nanodevices collaborative innovation center of Quantum Matter

Two-dimensional(2D) materials and their heterostructures have attracted a lot of attention due to their unique electronic and optical properties. MoS_2 as the most typical 2D semiconductors has great application potential in thin film transistors, photodetector, hydrogen evolution reaction, memory device, etc. However, the performance of MoS_2 devices is limited by the contact resistance and the improvement of its contact quality is important. In this work, we report the experimental investigation of pressure-enhanced contact quality between monolayer MoS_2 and graphite by conductive atom force microscope(C-AFM). It was found that at high pressure, the contact quality between graphite and MoS_2 is significantly improved. This pressure-mediated contact quality improvement between MoS_2 and graphite comes from the enhanced charge transfer between MoS_2 and graphite when MoS_2 is stretched. Our results provide a new way to enhance the contact quality between MoS_2 and graphite for further applications.

关键词： MoS2/graphite heterojunction C-AFM pressure contact quality

Dynamic shaping of vectorial optical fields based on two-dimensional blazed holographic grating

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Chinese Physics B 2020年第1期29卷 76-81页

作者： Xinyi Wang Yuan Gao Zhaozhong Chen Jianping Ding Hui-Tian Wang National Laboratory of Solid State Microstructures and School of Physics Nanjing UniversityNanjing 210093China collaborative innovation center of Advanced Microstructures Nanjing UniversityNanjing 210093China collaborative innovation center of Solid-State Lighting and Energy-Saving Electronics Nanjing UniversityNanjing 210093China

We propose a vectorial optical field generation system based on two-dimensional blazed grating to high-efficiently generate structured optical fields with prescribed amplitude,phase,and *** this system,an optimized blazed grating hologram is written on a spatial light modulator(SLM)and can diffract the majority of the incident light into the first-order diffractions of the x and y directions,which then serve as base vectors for synthesizing desired vector *** with the conventional cosine grating used in the previous work,the proposed two-dimensional,blazed grating has a much higher *** computer simulation and optical experiment validate that a conversion efficiency up to 5 times that of the former work is *** method can facilitate applications of the optical field manipulation.

关键词： diffraction polarization holographic gratings liquid-crystal devices

Dip-coating processed sponge-based electrodes for stretchable Zn-MnO2 batteries

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Nano Research 2018年第3期11卷 1554-1562页

作者： Hong-Wu Zhu Jin Ge Yu-Can Peng Hao-Yu Zhao Lu-An Shi Shu-Hong Yu Division of nanomaterials & Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Suzhou Nano Science and Technology Department of Chemistry CAS Centre for Excellence in Nanoscience Hefei Science Centre of CAS University of Science and Technology of China Hefei 230026 China

Stretchable electronics are in high demand for next-generation wearable devices, but their fabrication is still challenging. Stretchable conductors, flexible pressure sensors, and foldable light-emitting diodes （LEDs） have been reported; however, the fabrication of stable stretchable batteries, as power suppliers for wearable devices, is significantly behind the development of other stretchable electronics. Several stretchable lithium-ion batteries and primary batteries have been fabricated, but their low capacities and complicated manufacturing processes are obstacles for practical applications. Herein, we report a stretchable zinc/manganese-oxide （Zn-MnO2） full battery based on a silver-nanowire- coated sponge prepared via a facile dip-coating process. The spongy electrode, with a three-dimensional （3D） binary network structure, provided not only high conductivity and stretchability, but also enabled a high mass loading of electrochemically active materials （Zn and MnO2 particles）. The fabricated Zn-MnO2 battery exhibited an areal capacity as high as 3.6 mAh·cm^-2 and could accommodate tensile strains of up to 100% while retaining 89% of its original capacity. The facile solution-based strategy of dip-coating active materials onto a cheap sponge-based stretchable current collector opens up a new avenue for fabricating stretchable batteries.

关键词： stretchable battery,Zn-MnO2 batter silver nanowires,sponge,binary network structure

Sulfonated carbon dots modified IrO_(2)nanosheet as durable and high-efficient electrocatalyst for boosting acidic oxygen evolution reaction

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Nano Research 2024年第9期17卷 8017-8024页

作者： Mengjie Ma Wenxiang Zhu Fan Liao Kui Yin Hui Huang Kun Feng Dongdong Gao Jinxin Chen Zenan Li Jun Zhong Lai Xu Yang Liu Mingwang Shao Zhenhui Kang Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Macao Institute of Materials Science and Engineering(MIMSE) Macao University of Science and TechnologyTaipaMacao 999078China

Oxygen evolution reaction(OER)plays a crucial role in developing energy conversion and adjusting electronic structure of the electrocatalysts can effectively improve the catalytic activity and ***,it is a challenge to adjust the electronic structure on two-dimensional iridium dioxide nanosheets(IrO_(2)NS),which have the advantages of high atom ***,we regulate the surface properties of IrO_(2)NS through sulfonated carbon dots(SCDs)to promote the OER catalytic *** catalyst IrO_(2)NS/SCDs-2 exhibited excellent catalytic activity with a lower overpotential of 180 mV than IrO_(2)NS(230 mV)at the current density of 10 mA·cm^(-2)in a 0.5 M H_(2)SO_(4) *** after 160 h of stability testing,the overpotential of IrO_(2)NS/SCDs-2 only decreased by 4 ***,transient potential scanning test can visually demonstrate that the addition of SCDs improves the conductivity of the catalyst and increases the electron transfer rate.

关键词： sulfonated carbon dots oxygen evolution reaction electrocatalysis transient potential scanning

A non-surgical suturing strategy for rapid cardiac hemostasis

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Nano Research 2023年第1期16卷 810-821页

作者： Yuan Gao Jun Zhang Nan Cheng Zhong Liu Yuan-Bin Wu Qian-Qian Zhou Chen-Yan Li Miao Yu Seeram Ramakrishna Rong Wang Yun-Ze Long collaborative innovation center for nanomaterials&devices College of PhysicsQingdao UniversityQingdao 266071China Department of Adult Cardiac Surgery the Sixth Medical Center of PLA General HospitalBeijing 100084China Institute of Health Service and Transfusion Medicine Beijing 100850China center for Nanofibers&Nanotechnology Department of Mechanical EngineeringNational University of SingaporeSingapore 117574Singapore State Key Laboratory of Bio-Fibers&Eco-Textiles Qingdao 266071China

As the central organ of the human body,once the heart is damaged,it will cause devastating damage to the circulation system of the whole body,often leading to rapid ***,the only treatment option to stop bleeding in penetrating cardiac injuries is surgical suturing,which is extremely complex and *** addition,it is difficult to implement this kind of treatment in battlefields with poor medical ***,there is an urgent need to develop an effective cardiac hemostasis *** this work,we propose a two-step hemostasis strategy that can effectively stop bleeding for penetrating heart *** is,cardiac hemostatic plug(CHP)is made from the nanocomposite(polylactic acid/gelatin/absorbable hemostatic particles,PLA/GEL/AHP)with high biosafety,excellent hemostatic performance,and degradability which is used to block cardiac bleeding,and then wound surface is sealed by in-situ electrospun medical glue fibers(N-octyl-2-cyanoacrylate,interfacial toughness:221±23 J·m−2),thus completing cardiac hemostasis(porcine heart with 1 cm diameter penetrating wound).The hemostasis process is simple and quick(low spinning that is suitable for doping various functional particles,and the PLA/GEL/AHP composite nanofiber membrane prepared by this method is also a promising hemostatic material.

关键词： heart cardiac hemostasis nanocomposite solution blow spinning electrospinning

Enhanced catalysis of ultrasmall Au-MoS_2 clusters against reactive oxygen species for radiation protection

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Science Bulletin 2018年第14期63卷 925-934页

作者： Peixian Bian Jinxuan Zhang Junying Wang Jiang Yang Jingya Wang Haile Liu Yuanming Sun Meixian Li Xiao-Dong Zhang Tianjin Key Laboratory of Molecular Nuclear Medicine Institute of Radiation MedicineChinese Academy of Medical Sciences and Peking Union Medical College Institute of Analytical Chemistry College of Chemistry and Molecular EngineeringPeking University Department of Physics and Tianjin Key Laboratory of low dimensional Materials Physics and Preparing Technology School of SciencesTianjin University State Key Laboratory of Oncology in South China Collaborative Innovation Center for Cancer MedicineSun Yat-sen University Cancer Center

Ionizing radiation produces excessive reactive oxygen species （ROS） which impose detrimental effects on biological systems. Thus, it is important to explore clinically safe and efficacious radioprotection agents to scavenge ROS and reduce the risks of radiotherapy. Recently, emerging catalytic nanomaterials such as sulfide nanomaterials have shown capability of clearing ROS in vivo by unique electron transfers between atoms, but their catalytic activities are yet suboptimal. As such, there is an unmet need to improve cat- alytic properties for stronger antioxidant activities and radiation protection. Herein, we prepared ultra- small Au-MoS2 clusters （~***） and they showed enhanced catalytic properties via gold intercalation facilitating increased active sites and synergistic effects. Electrocatalysis results revealed that the catalytic activity of Au-MoS2 towards 1-1202 was superior to ultrasmall MoS2 without Au. As a result, we found that improving the electrocatalytic property of Au-MoS2 can effectively enhance corre- sponding antioxidant activities and radioprotection effects in vivo. In addition, Au-MoS2 also showed sig- nificant radioprotection in vitro and dramatically reduced the excess of radiation-induced adverse ROS. It also rescued radiation-induced DNA damages and protected the bone marrow hematopoietic system from ionizing radiation.

关键词： Au-MoS2 Reactive oxygen species Catalytic activity Radiation protection

Understanding localized surface plasmon resonance with propagative surface plasmon polaritons in optical nanogap antennas

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Photonics Research 2016年第6期4卷 293-305页

作者： Hongwei Jia Fan Yang Ying Zhong Haitao Liu Key Laboratory of Optical Information Science and Technology Ministry of Education Institute of Modern OpticsNankai University SZU-NUS collaborative innovation center for optoelectronic Science & Technology Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic Engineering Shenzhen University State Key Laboratory of low dimensional Quantum Physics Department of Physics Tsinghua University State Key Laboratory of Precision Measuring Technology and Instruments Tianjin University

The plasmonic nanogap antenna is an efficient radiating or receiving optical device. The resonance behavior of optical antennas is commonly attributed to the excitation of a localized surface plasmon resonance(LSPR), which can be theoretically defined as the quasi-normal mode(QNM). To clarify the physical origin of the LSPR, we build up an analytical model of the LSPR by considering a multiple scattering process of propagative surface plasmon polaritons(SPPs) on the antenna arms. The model can comprehensively reproduce the complex eigenfrequency and the field distribution of QNMs of the antenna, unveiling that the LSPR arises from a Fabry–Perot resonance of SPPs. By further applying the complex pole expansion theorem of meromorphic functions, the field of the antenna under illumination by a nearby dipole emitter can be analytically expanded with QNMs, which well predicts the frequency response of the enhancement factor of radiation. The present model establishes explicit relations between the concepts of the LSPR and the propagative SPP and integrates the advantages of the Fabry–Perot and QNM formalisms of nanogap antennas.

关键词： mode LSPR