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Photoswitchable quantum electrodynamics in a hybrid plasmonic quantum emitter

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Chip 2023年第3期2卷 67-74页

作者： Yuan Liu hongwei Zhou Peng Xue Linhan Lin hong-bo sun State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua UniversityBeijing 100084China Beijing Computational Science Research Center Beijing 100084China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China

The design and preparation of quantum states free from environmen-tal decohering effects is critically important for the development of on-chip quantum systems with *** promising strategy is to harness quantum state superposition to construct decoherence-free subspace(DFS),which is termed dark ***,the exci-tation of dark states relies on anti-phase-matching on two qubits and the inter-qubit distance is of wavelength scale,which limits the de-velopment of compact quantum *** the current work,a hybrid plasmonic quantum emitter was proposed,which was composed of strongly correlated quantum emitters intermediated by a plasmonic *** turning the plasmonic loss from drawback into advantage,the anti-phase-matching rule was broken by rapidly de-caying the superposed bright state and preparing a sub-100 nm dark state with decay rate reduced by 3 orders of *** inter-estingly,the dark state could be optically switched to a single-photon emitter with enhanced brightness through photon-blockade,with the quantum second order correlation function at zero delay showing a wide range of tunability down to 0.02.

关键词： Decoherence-free subspace Plasmonics Quantum emitter On-chip quantum systems

Photon propagation control on laser-written photonic chips enabled by composite waveguides

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Photonics Research 2023年第5期11卷 829-838页

作者： ZE-ZHENG LI ZHEN-NAN TIAN Zhong-TIAN LI YANG OUYANG QI-DAI CHEN hong-bo sun State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua UniversityBeijing 100084China

Femtosecond laser direct writing(Fs LDW)three-dimensional(3D)photonic integrated circuits(PICs)can realize arbitrary arrangement of waveguide arrays and coupling ***,they are capable of directly constructing arbitrary Hamiltonians and performing specific computing tasks crucial in quantum simulation and ***,the propagation constantβis limited to a narrow range in single-mode waveguides by solely changing the processing parameters,which greatly hinders the design of Fs LDW *** study proposes a composite waveguide(CWG)method to increase the range ofβ,where a new single-mode composite waveguide comprises two adjacent circular *** a result,the photon propagation can be controlled and the variation range ofβcan be efficiently enlarged by approximately two times(Δβ~36 cm-1).With the CWG method,we successfully realize the most compact Fs LDW directional couplers with a 9μm pitch in a straight-line form and achieve the reconstruction of the Hamiltonian of a Hermitian ***,the study represents a step further toward the fine control of the coupling between waveguides and compact integration of Fs LDW PICs.

关键词： waveguide waveguides composite

Carnivorous plants inspired shape-morphing slippery surfaces

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Opto-Electronic Advances 2023年第1期6卷 27-37页

作者： Dong-Dong Han Yong-Lai Zhang Zhao-Di Chen Ji-Chao Li Jia-Nan Ma Jiang-Wei Mao Hao Zhou hong-bo sun State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua UniversityBeijing 100084China

Carnivorous plants,for instance,Dionaea muscipula and Nepenthes pitcher plant,inspired the innovation of advanced stimuli-responsive actuators and lubricant-infused slippery surfaces,***,hybrid bionic devices that combine the active and passive prey trapping capabilities of the two kinds of carnivorous plants remain a ***,we report a moisture responsive shape-morphing slippery surface that enables both moisture responsive shapemorphing and oil-lubricated water repellency for simultaneous active-and passive-droplet *** moisture deformable slippery surface is prepared by creating biomimetic microstructures on graphene oxide(GO)membrane via femtosecond laser direct writing and subsequent lubricating with a thin layer of oil on the laser structured reduced GO(LRGO)*** integration of a lubricant-infused slippery surface with an LRGO/GO bilayer actuator endows the actuator with droplet sliding ability and promotes the moisture deformation performance due to oil-enhanced water repellency of the inert layer(LRGO).Based on the shape-morphing slippery surface,we prepared a series of proof-of-concept actuators,including a moisture-response Dionaea muscipula actuator,a smart frog tongue,and a smart flower,demonstrating their versatility for active/passive trapping,droplet manipulation,and sensing.

关键词： femtosecond laser fabrication graphene oxide moisture responsive actuators slippery surface bionic devices

Catalysis by subsurface metal atoms in Al(001) through electron transfer

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National Science Review 2024年第4期11卷 12-13页

作者： bo sun Ding Ma Beijing National Laboratory for Molecular Science New Cornerstone Science Laboratory College of Chemistry and Molecular Engineering Peking University

Heterogeneous catalysis plays a crucial role in the chemical industry, which has evolved from the investigation of chemisorption to an electronic structure[1]. Diverse strategies, such as alloying,doping, and confining, have been applied to enhance the catalytic properties of active sites through electronic modulation. The electron transfer between active sites and substrates profoundly influences catalytic activity [2].

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Two-dimensional In_(2)Se_(3):A rising advanced material for ferroelectric data storage

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InfoMat 2022年第8期4卷 54-81页

作者： Yu-Ting Huang Nian-Ke Chen Zhen-Ze Li Xue-Peng Wang hong-bo sun Shengbai Zhang Xian-Bin Li State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchunChina State Key Lab of Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua UniversityBeijingChina Department of Physics Applied Physicsand AstronomyRensselaer Polytechnic InstituteTroyNew YorkUSA

Ferroelectric memory is a promising candidate for next-generation nonvolatile memory owing to its outstanding performance such as low power consump-tion,fast speed,and high ***,the ferroelectricity of conven-tional ferroelectric materials will be eliminated by the depolarization field when the size drops to the nanometer *** a result,the miniaturization of ferroelectric devices was hindered,which makes ferroelectric memory unable to keep up with the development of integrated-circuit(IC)***,a two-dimensional(2D)In2Se3 was reported to maintain stable ferro-electricity at the ultrathin scale,which is expected to break through the bottle-neck of ***,devices based on 2D In2Se3,including the ferroelectric field-effect transistor,ferroelectric channel transistor,synaptic fer-roelectric semiconductor junction,and ferroelectric memristor were ***,a comprehensive understanding of the structures and the ferroelectric-switching mechanism of 2D In2Se3 is still ***,the atomic structures of different phases,the dynamic mechanism of ferroelectric switching,and the performance/functions of the latest devices of 2D In2Se3 are ***,the correlations among the structures,the properties,and the device performance are ***,several crucial problems or challenges and possible research directions are put *** hope that this review paper can provide timely knowledge and help for the research commu-nity to develop 2D In2Se3 based ferroelectric memory and computing technol-ogy for practical industrial applications.

关键词： 2D ferroelectric device 2D ferroelectric material 2D In2Se3 neuromorphic computing nonvolatile memory

Low Selenium and Low Protein Exacerbate Myocardial Damage in Keshan Disease by Affecting the PINK1/Parkin-mediated Mitochondrial Autophagy Pathway

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Current Medical Science 2024年第1期44卷 93-101页

作者： Li-wei ZHANG hong-qi FENG Song-bo FU Dian-jun sun Center for Endemic Disease Control Chinese Center for Disease Control and PreventionHarbin Medical UniversityNHC Key Laboratory of Etiology and Epidemiology(Harbin Medical University)Key Lab of Etiology and EpidemiologyEducation Bureau of Heilongjiang ProvinceHarbin 150086China

Objective Keshan disease(KD)is a myocardial mitochondrial disease closely related to insufficient selenium(Se)and protein *** induced putative kinase 1(PINK1)/Parkin mediated mitochondrial autophagy regulates various physiological and pathological processes in the *** study aimed to elucidate the relationship between PINK1/Parkin-regulated mitochondrial autophagy and KD-related myocardial *** A low Se and low protein animal model was *** hundred Wistar rats were randomly divided into 5 groups(control group,low Se group,low protein group,low Se+low protein group,and corn from KD area group).The JC-1 method was used to detect the mitochondrial membrane potential(MMP).ELISA was used to detect serum creatine kinase MB(CK-MB),cardiac troponin I(cTnI),and mitochondrial-glutamicoxalacetic transaminase(M-GOT)***-PCR and Western blot analysis were used to detect the expression of PINK1,Parkin,sequestome 1(P62),and microtubule-associated proteins1A/1B light chain 3B(MAP1LC3B).Results The MMP was significantly decreased and the activity of CK-MB,cTnI,and M-GOT significantly increased in each experimental group(low Se group,low protein group,low Se+low protein group and corn from KD area group)compared with the control group(P<0.05 for all).The mRNA and protein expression levels of PINK1,Parkin and MAP1LC3B were profoundly increased,and those of P62 markedly decreased in the experimental groups compared with the control group(P<0.05 for all).Conclusion Low Se and low protein levels exacerbate myocardial damage in KD by affecting the PINK1/Parkin-mediated mitochondrial autophagy pathway.

关键词： Keshan disease low selenium and low protein myocardial mitochondrial injury PTEN induced putative kinase 1(PINK1)/Parkin mitochondrial autophagy

Catalytic recycling of polyesters via a binuclear catalyst

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Science China Chemistry 2024年第2期67卷 426-427页

作者： bo sun Ding Ma Beijing National Laboratory for Molecular Science New Cornerstone Science LaboratoryCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China

Plastics play a crucial role in modern society life. While the increasing use of plastics and rapid accumulation of plastic waste in nature environment have caused severe environmental crisis and the waste of carbon resources. Catalytic upcycling is a promising approach to transform plastic waste into high value-added chemicals to achieve a sustainable circular economy.

关键词： Catalytic polyester catalyst

Studies of an event-building algorithm of the readout system for the twin TPCs in HFRS

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Nuclear Science and Techniques 2024年第4期35卷 82-95页

作者： Jing Tian Zhi-Peng sun Song-bo Chang Yi Qian hong-Yun Zhao Zheng-Guo Hu Xi-Meng Chen Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of LanzhouLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong LaboratoryHuizhou 516000China

The High-energy Fragment Separator(HFRS),which is currently under construction,is a leading international radioactive beam *** sets of position-sensitive twin time projection chamber(TPC)detectors are distributed on HFRS for particle identification and beam *** twin TPCs'readout electronics system operates in a trigger-less mode due to its high counting rate,leading to a challenge of handling large amounts of *** address this problem,we introduced an event-building *** algorithm employs a hierarchical processing strategy to compress data during transmission and *** addition,it reconstructs twin TPCs'events online and stores only the reconstructed particle information,which significantly reduces the burden on data transmission and storage *** studies demonstrated that the algorithm accurately matches twin TPCs'events and reduces more than 98%of the data volume at a counting rate of 500 kHz/channel.

关键词： High counting rate Twin TPCs Trigger-less Readout electronics Event building Hierarchical data processing

Self-adaptive gas flow and phase change behaviors during hydrate exploitation by alternate injection of N2 and CO2

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Petroleum Science 2024年第3期21卷 2120-2129页

作者： bo-Jian Cao Yi-Fei sun hong-Nan Chen Jin-Rong Zhong Ming-Long Wang Ming Wang Chang-Yu sun Guang-Jin Chen State Key Laboratory of Heavy Oil Processing China University of Petroleum School of Chemistry and Chemical Engineering Changsha University of Science & Technology

Since hydrate resources play a part of the stratigraphic framework structure in sediments,establishing a safe and economic method for hydrates exploitation remains the primary challenge to this *** the proposed methods,the spontaneous displacement of CH4from hydrate cages by CO2seems to be a perfect mechanism to address gas production and CO2storage,especially in today's strong demand for carbon reduction and replacing clean *** extensive lab researches,in the past decade,injecting a mixture of CO2and small molecule gas has become a key means to enhance displacement efficiency and has great potential for ***,there is a lack of in-depth research on gas flow in the reservoir,while the injected gas always passes through low-saturated hydrate areas with high permeability and then occurs gas channel in a short term,finally resulting in the decreases in gas production efficiency and produced gas ***,we explored a new injection-production mode of alternate injection of N2and CO2in order to fully coordinate the advantages of N2in enhanced hydrate decomposition and CO2in solid storage and heat *** alternate "taking" and "storing" processes perfectly repair the problem of the gas channel,achieving self-regulation effect of CH4recovery and *** 3-D experimental results show that compared to the mixed gas injection,CH4recovery is increased by>50% and CO2storage is increased by>70%.Additionally,this alternate injection mode presented a better performance in CH4concentration of produced gas and showed outstanding N2utilization ***,we analyzed its self-adaptive gas flow mechanism and proposed an application model of "one injection and multiple production".We look forward to this study accelerating the application of CO2-CH4replacement technology.

关键词： Hydrate Replacement CH 4 recovery CO 2 storage Reservoir remediation