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| 1 | manipulation of spin squeezing condensate via electromagnetically induced transparency显示文摘We propose a scheme to coherently control spin squeezing of atomic Bose-Einstein condensate (BEC) via the technique of electromagnetically induced transparency (EIT). We study quantum dynamics of the mean spin vector and spin squeezing. It is shown that the mean spin vector and spin squeezing of the BEC can be controlled and manipulated by adjusting the external coupling fields or/and internal nonlinear interactions of the BEC. It is indicated that the spin squeezing can be generated rapidly in the dynamical process and maintained in a long time interval. It is found that a larger effective Rabi coupling between atoms and lasers can produce a stronger spin squeezing, and the squeezing can maintain a longer time interval. | Song-Song Li Ji-Bing Yuan Le-Man Kuang | 2013 | Frontiers of physics2013，8，1： | 4 |
| 2 | Modulational Instability of Trapped Two-Component Bose-Einstein Condensates显示文摘The modulational instability of two-component Bose-Einstein condensates(BECs)under an external parabolic potential is discussed.Based on the trapped two-component Gross-Pitaevskill equations,a time-dependent dispersion relation is obtained analytically by means of the modified lens-type transformation and linear stability analysis.It is shown that a modulational unstable time scale exists for trapped two-component BECs.The modulational properties-which are determined by the wave number,external trapping parameter,intraand inter-species atomic interactions-are modified significantly.The analytical results are confirmed by direct numerical simulation.Our results provide a criterion for judging the occurrence of instability of the trapped two-component BECs in experiment. | 周建文 李晓旬 高瑞 秦文山 蒋浩浩 李涛涛 薛具奎 | 2019 | Chinese Physics Letters2019，36，9： | 2 |
| 3 | PREDICTION OF THE PHASE BEHAVIOR OF GAS CONDENSATES USING PATEL-TEJA EQUATION OF STATE AND GAMMA DISTRIBUTION FUNCTION显示文摘The three-parameter Petal-Teja equation of state coupled with a characterization proceduref0r C7+-fraction based on gamma distribution function was employed to predict the phase behaviorof eight gas condensates.The lumping of the subdivided single carbon number(SCN)hydrocarbons inthe plus-fraction and the choice of empirical correlations for calculating the critical properties andacentric factor of SCN hydrocarbons were discussed. | 郑大庆 郭天民 | 1997 | Chinese Journal of Chemical Engineering1997，5，3： | 1 |
| 4 | Phase separation in plants:New insights into cellular compartmentalization显示文摘A fundamental challenge for cells is how to coordinate various biochemical reactions in space and time. To achieve spatiotemporal control, cells have developed organelles that are surrounded by lipid bilayer membranes. Further, membraneless compartmentalization, a process induced by dynamic physical association of biomolecules through phase transition offers another efficient mechanism for intracellular organization. While our understanding of phase separation was predominantly dependent on yeast and animal models, recent findings have provided compelling evidence for emerging roles of phase separation in plants. In this review, we first provide an overview of the current knowledge of phase separation, including its definition, biophysical principles, molecular features and regulatory mechanisms. Then we summarize plant-specific phase separation phenomena and describe their functions in plant biological processes in great detail. Moreover, we propose that phase separation is an evolutionarily conserved and efficient mechanism for cellular compartmentalization which allows for distinct metabolic processes and signaling pathways, and is especially beneficial for the sessile lifestyle of plants to quickly and efficiently respond to the changing environment. | Xiumei Xu Canhui Zheng Dandan Lu Chun‐Peng Song Lixin Zhang | 2021 | Journal of Integrative Plant Biology2021，63，11： | 1 |
| 5 | Phase separation in RNA biology显示文摘The formation of biomolecular condensates via liquid-liquid phase separation(LLPS)is an advantageous strategy for cells to organize subcellular compartments for diverse functions.The involvement of LLPS is more widespread and overrepresented in RNA-related biological processes.This is in part because that RNAs are intrinsically multivalent macromolecules,and the presence of RNAs affects the formation,dissolution,and biophysical properties of biomolecular condensates formed by LLPS.Emerging studies have illustrated how LLPS participates in RNA transcription,splicing,processing,quality control,translation,and function.The interconnected regulation between LLPS and RNAs ensures tight control of RNA-related cellular functions. | Yi Lin Xiaofeng Fang | 2021 | Journal of Genetics and Genomics2021，48，10： | 0 |
| 6 | Atomic force microscopy observation of the condensates of the spermidine-DNA complexes显示文摘In vitro investigation on the condensation of DNA induced by naturally occurring polyamines can provide useful insights into the packaging state of DNA in vivo , which is closely related to the mechanism of the self regulation or self switching of the gene expression. The present paper reports the high resolution AFM observations of the condensates of spermidine DNA complexes. It was found that the spermidine can directly condense the DNA into toroidal structures. The formation of this special structure is greatly influenced by the dynamic factors such as the concentrations and the reaction time. Close examination revealed that the toroids were constructed by many particles stacked and squeezed together. Our observations indicate that the dynamic process of the toroid formation may be a spiral wound process of the globular subunits. | 林璋 王琛 苏明 田芳 马金 白春礼 | 1998 | Science China Chemistry1998，41，4： | 0 |
| 7 | Self-trapped spatially localized states in combined linear-nonlinear periodic potentials显示文摘We analyze the existence and stability of two kinds of self-trapped spatially localized gap modes,gap solitons and truncated nonlinear Bloch waves,in one-and two-dimensional optical or matter-wave media with self-focusing nonlinearity,supported by a combination of linear and nonlinear periodic lattice potentials.The former is found to be stable once placed inside a single well of the nonlinear lattice,it is unstable otherwise.Contrary to the case with constant self-focusing nonlinearity,where the latter solution is always unstable,here,we demonstrate that it nevertheless can be stabilized by the nonlinear lattice since the model under consideration combines the unique properties of both the linear and nonlinear lattices.The practical possibilities for experimental realization of the predicted solutions are also discussed. | Jin-Cheng Shi Jian-Hua Zeng | 2020 | Frontiers of physics2020，15，1： | 0 |
| 8 | Quantum Entanglement of Many Distant Bose–Einstein Condensates in an Optical Lattice by Interference显示文摘We propose a scheme to generate maximally entangled states of two distant Bose–Einstein condensates,which are trapped in different potential wells of a one-dimensional optical lattice. We show how such maximally entangled state can be used to test the Bell inequality and realize quantum teleportation of a Bose–Einstein condensate state. The scheme proposed here is based on the interference of Bose-Einstein condensates leaking out from different potential wells of optical lattice. It is briefly pointed out that this scheme can be extended to generate maximally entangled Greenberger–Horne–Zeilinger(GHZ) states of 2m(m > 1) distant Bose–Einstein condensates. | 刘亚峰 邹旭波 郭光灿 | 2014 | Communications in Theoretical Physics2014，61，7： | 0 |
| 9 | MATHEMATICAL ANALYSIS OF THE COLLAPSE IN BOSE-EINSTEIN CONDENSATE显示文摘In this article, the authors consider the collapse solutions of Cauchy problem for the nonlinear Schrdinger equation iψt + 1/2 △ψ - 1/2 ω2|x|2ψ + |ψ|2ψ = 0, x ∈ R2, which models the Bose-Einstein condensate with attractive interactions. The authors establish the lower bound of collapse rate as t → T . Furthermore, the L2-concentration property of the radially symmetric collapse solutions is obtained. | 李晓光 张健 吴永洪 | 2009 | Acta Mathematica Scientia2009，29，1： | 0 |
| 10 | Trapped Bose–Einstein condensates with quadrupole–quadrupole interactions显示文摘We numerically investigate the ground-state properties of a trapped Bose–Einstein condensate with quadrupole–quadrupole interaction.We quantitatively characterize the deformations of the condensate induced by the quadrupolar interaction.We also map out the stability diagram of the condensates and explore the trap geometry dependence of the stability. | 王安邦 易俗 | 2018 | Chinese Physics B2018，27，12： | 0 |
| 11 | Identification and mechanism of formation of certain mutagenic components in the volatile condensates from oxidized and heated edible oils显示文摘IdentificationandmechanismofformationofcertainmutageniccomponentsinthevolatilecondensatesfromoxidizedandheatededibleoilsBaoZi... | Bao Ziping He Jianquan Hou Fuzhong(Institute of Environmental Sciences, Beijing Normial University, Beijing 100875, China) | 1994 | Journal of Environmental Sciences1994，6，2： | 0 |
| 12 | Stationary States and Modulational Instability of Coupled Two-Component Bose–Einstein Condensates in a Ring Trap显示文摘We investigate modulational instability(MI) of a coupled two-component Bose–Einstein condensates in a rotating ring trap. The excitation spectrum and the MI condition of the system are presented analytically. We find that the coupling between the two components strongly modifies the MI condition, and the MI condition is phase-dependent.Furthermore, we discuss the effect of MI on both density excitation and spin excitation. If the inter- and intra-component interaction strengths are all equal, the MI causes density excitation but not spin excitation, and if the inter- and intracomponent interaction strengths are different, the MI causes both density excitation and spin excitation. Our results provide a promising approach for controlling the stability and excitation of a rotating two-component Bose–Einstein condensates by modulating its coupling strength and interaction strength. | 邓海明 钟宏华 黄嘉豪 代慧 姚敏 黄小益 | 2015 | Communications in Theoretical Physics2015，，8： | 0 |
| 13 | Interference properties of two-component matter wave solitons显示文摘Wave properties of solitons in a two-component Bose-Einstein condensate are investigated in detail.We demonstrate that dark solitons in one of components admit interference and tunneling behavior,in sharp contrast to the scalar dark solitons and vector dark solitons.Analytic analyses of interference properties show that spatial interference patterns are determined by the relative velocity of solitons,while temporal interference patterns depend on the velocities and widths of two solitons,differing from the interference properties of scalar bright solitons.Especially,for an attractive interactions system,we show that interference effects between the two dark solitons can induce some short-time density humps(whose densities are higher than background density).Moreover,the maximum hump value is remarkably sensitive to the variation of the solitons'parameters.For a repulsive interactions system,the temporal-spatial interference periods of dark-bright solitons have lower limits.Numerical simulation results suggest that interference patterns for the dark-bright solitons are more robust against noises than bright-dark solitons.These explicit interference properties can be used to measure the velocities and widths of solitons.It is expected that these interference behaviors can be observed experimentally and can be used to design matter wave soliton interferometer in vector systems. | 秦艳红 伍勇 赵立臣 杨战营 | 2020 | Chinese Physics B2020，29，2： | 0 |
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