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Communications in Theoretical Physics 2008年第5期49卷 1182-1186页

作者： cui hui-ping zou jian li jian shao bin Department of Physics School of Science Beijing Institute of Technology Beijing 100081 China

We investigate the influence of the Stark shift on the entanglement transfer from the two-mode squeezed vacuum state field to two spatially separated atoms in two-photon processes. Our results show that the Stark shift plays an important role in such entanglement transfer. We find that when the Stark shift parameter r is small, the degree of entanglement between the two atoms increases with the increasing of the squeezing parameter ξ first, and after achieving its maximal value, the degree of entanglement will decrease to zero with the increasing of ξ; while for big r, E will increase with the increasing of ξ.

关键词： entanglement transfer two-mode squeezed vacuum state two-photon JCM

Quantum Information Processing in a Coupled Cavity Array

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Communications in Theoretical Physics 2008年第12期50卷 1312-1316页

作者： li jian zou jian shao bin Department of Physics Beijing Institute of Technology Beijing 100（}81 China

We consider a one-dimensional array of L identical coupled cavities,and each cavity is doped with atwo-level ***,it has been developed in several varieties by the newest *** find that theone-qubit quantum state can be perfectly transferred through the cavity array,and the entanglement between the firsttwo qubits can also be transferred to the last two *** addition,we successfully realized the entangling gate andswap gate in the coupled cavity array.

关键词： state transfer entanglement transfer quantum gate coupled cavity array

Generation of Entanglement Between Two Noninteracting Qubits via Interaction with Nonclassical Radiation Field

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Communications in Theoretical Physics 2005年第2X期44卷 259-268页

作者： zou jian CAI Jin-Fang shao bin li Qian-Shu Department of Physics Beijing Institute of Technology Beijing 100081 China Department of Chemistry Beijing Institute of Technology Beijing 100081 China

We study the interaction between a single-mode quantized field and a quantum system composed of two qubits. We suppose that two qubits initially be prepared in the mixed and separable state, and study how entanglement between two qubits arises in the course of evolution according to the Jaynes-Cummings type interaction with nonclassical radiation field. We also investigate the relation between entanglement and purity of qubit subsystem. We show that different photon statistics have different effects on the dynamical behavior of the qubit subsystem. When the qubits are initially prepared in the maximally mixed and separable state, for coherent state field we cannot find entanglement between two qubits; for squeezed state field entanglement between two qubits exists in several short period of time; for even and odd coherent state fields of large photon number, the dynamical behavior of the entanglement between two qubits shows collapse and revival phenomenon. For odd coherent state field of small photon number, the entanglement with both qubits initially prepared in maximally mixed state can be stronger than that with both qubits initially prepared in pure states. For fields of small photon number, the entanglement strongly depends on the states they are initially prepared in. For coherent state field, and odd and even coherent state fields of large photon number, the entanglement only depends on the purity of the initial state of qubit subsystem. We also show that during the evolution the unentangled state may be purer than the entangled state, and the maximum degree of entanglement may not occur at the time when the qubit subsystem is in the purist state.

关键词： entanglement mixed state purity nonclassical state field

Entanglement of Non-symmetric Two Atomic Qubits Induced by a Coherent State Field

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Communications in Theoretical Physics 2006年第1期45卷 67-70页

作者： li Jun-Gang zou jian CAI Jin-Fang shao bin Department of Physics School of Science Beijing Institute of Technology Beijing 100081 China

The entanglement of two atomic qubits, which are coupled to a coherent state field with different couplings, is studied. The dynamical evolution of the concurrence, which measures the degree of the entanglement between the two qubits, is plotted versus the scaled time gt. It is found that the two qubits can be entangled by the coherent state field even when they are initially prepared in the most mixed state, and for very weak field, the most mixed state can be; more easily entangled than some pure states. It is also found that the entanglement between the qubits sensitively depends on the relative difference of the atomic couplings and the mean photon number of the field.

关键词： entanglement mixed state coherent state field

Quantum Correlation Generation in a Damped Cavity

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Chinese Physics Letters 2011年第9期28卷 12-15页

作者： li Jun-Gang zou jian XU Bao-Ming shao bin Department of Physics Beijing Institute of TechnologyBeijing 100081 Key Laboratory of Cluster Science of Ministry of Education Beijing Institute of TechnologyBeijing 100081

Dynamic evolutions of the quantum discord and entanglement between two charge qubits located inside a damped cavity are demonstrated *** is found that with cavity dissipation,the dynamics of the quantum discord between two qubits is sensitive to the degree of mixing of the initial qubits'*** is different from steady entanglement,which is independent of the degree of mixing of the initial state of the qubits.

关键词： state mixing quantum

Effect of non-Markovianity on synchronization

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Communications in Theoretical Physics 2021年第10期73卷 81-89页

作者： Kun-Jie Zhou jian zou Bao-Ming Xu Lei li bin shao School of Physics Beijing Institute of TechnologyBeijing 100081China Shandong Key Laboratory of Biophysics Institute of BiophysicsDezhou UniversityDezhou 253023China School of Physical Science and Technology Inner Mongolia UniversityHohhot 010021China

We investigate the transient spontaneous quantum synchronization between two qubits interacting with a common non-Markovian environment based on a collision *** are mainly interested in the effect of non-Markovianity on the synchronization between two *** find that the non-Markovianity always delay the anti-synchronization and decrease the parameter region where the qubits get ***,we define V to characterize the visibility of synchronization and show that there is an apparent link among V,entanglement and quantum mutual information whether in the Markovian or non-Markovian regimes when the environment is in the vacuum ***,with the increase of temperature,the parameter region of the emergence of anti-synchronization and the time to get anti-synchronized in the non-Markovian regime gradually approaches that in the Markovian *** high temperature decreases the parameter region of the emergence of anti-synchronization in both Markovian and non-Markovian regimes,and breaks the connection among V,entanglement and quantum mutual information.

关键词： quantum synchronization non-Markovianity entanglement quantum mutual information

Influence of Dissipation on Multiparticle Entanglement Transfer

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Communications in Theoretical Physics 2007年第12期48卷 1033-1037页

作者： li Jun-Gang zou jian JI Tao shao bin CAI Jin-Fang Department of Physics,Beijing Institute of Technology,Beijing 100081,China Department of Physics Beijing Institute of Technology

We investigate the influence of the initial mixture of qubits and the dissipation on the entanglement transferfrom three-qubit Greenberger-Horne-Zeilinger (GHZ) and W state fields to three matter qubits,which are trapped inthree spatially separated *** find that at gt≈11.07,the entanglement transfer can be almost complete nomatter what state the qubits are initially prepared *** the dissipation is taken into account,we tind that thespontaneous emission plays the similar role to the cavity damping in the entanglement transfer,and the decay rate ofthe GHZ state is larger than that of the W state.

关键词： W state GHZ state entanglement transfer dissipation

Effect of Nitrogen Regimes on Grain Yield,Nitrogen Utilization,Radiation Use Efficiency,and Sheath Blight Disease Intensity in Super Hybrid Rice

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Journal of Integrative Agriculture 2012年第1期11卷 134-143页

作者： li Di-qin TANG Qi-yuan ZHANG Yun-bo QIN jian-quan li Hu CHEN li-jun YANG Sheng-hai zou Ying-bin PENG shao-bing State Key Laboratory of Hybrid Rice Hunan Agricultural University Changsha Hunan 410128 P.R.China Crop Physiology and Production Center （CPPC） Huazhong Agricultural University Wuhan 430070 P..R.China

Poor nitrogen use efficiency in rice production is a critical issue in China. Site-specific N managements （SSNM） such as real-time N management （RTNM） and fixed-time adjustable-dose N management （FTNM） improve fertilizer-N use efficiency of irrigated rice. This study was aimed to compare the different nitrogen （N） rates and application methods （FFP, SSNM, and RTNM methods） under with- and without-fungicide application conditions on grain yield, yield components, solar radiation use efficiency （RUE）, agronomic-nitrogen use efficiency （AEN）, and sheath blight disease intensity. Field experiments were carried out at liuyang County, Hunan Province, China, during 2006 and 2007. A super hybrid rice liangyou 293 （LY293） was used as experimental material. The results showed that RTNM and SSNM have great potential for improving agronomic-nitrogen use efficiency without sacrificing the grain yield. There were significant differences in light interception rate, sheath blight disease incidence （DI） and the disease index （ShBI）, and total dry matter among the different nitrogen management methods. The radiation use efficiency was increased in a certain level of applied N. But, the harvest index （HI） decreased with the increase in applied N. There is a quadratic curve relationship between grain yield and applied N rates. With the same N fertilizer rate, different fertilizer-N application methods affected the RUE and grain yield. The fungicide application not only improved the canopy light interception rate, RUE, grain filling, and harvest index, but also reduced the degree of sheath blight disease. The treatment of RTNM under the SPAD threshold value 40 obtained the highest yield. While the treatment of SSNM led to the highest nitrogen agronomic efficiency and higher rice yield, and decreased the infestation of sheath blight disease dramatically as well. Nitrogen application regimes and diseases control in rice caused obvious effects on light interception rate, RUE, and HI. Optim

关键词： super hybrid rice real-time N management fixed-time adjustable-does N management grain yield sheath blight radiation use efficiency agronomic-nitrogen use efficiency

A low-latency pipeline for GRB light curve and spectrum using Fermi/GBM near real-time data

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Research in Astronomy and Astrophysics 2018年第5期18卷 99-110页

作者： Yi Zhao bin-bin Zhang shao-lin Xiong Xi Long Qiang Zhang li-Ming Song jian-Chao Sun Yuan-Hao Wang Han-Cheng li Qing-cui Bu Min-Zi Feng Zheng-Heng li Xing Wen Bo-bing Wu Lai-Yu Zhang Yong-Jie Zhang Shuang-Nan Zhang jian-Xiong shao School of Nuclear Science and Technology Lanzhou University Lanzhou 730000 China Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China School of Astronomy and Space Science Nanjing University Nanjing 210093 China Instituto de Astroffsica de Andaluc/a (IAA-CSIC) P.O. Box 03004 E-18080 Granada Spain University of Chinese Academy of Sciences Beijing 100049 China

Rapid response and short time latency are very important for Time Domain Astronomy, such as the observations of Gamma-ray Bursts（GRBs） and electromagnetic（EM） counterparts of gravitational waves（GWs）. Based on near real-time Fermi/GBM data, we developed a low-latency pipeline to automatically calculate the temporal and spectral properties of GRBs. With this pipeline, some important parameters can be obtained, such as T_（90） and fluence, within ～ 20 min after the GRB *** ～ 90% of GRBs, T90 and fluence are consistent with the GBM catalog results within 2σ *** pipeline has been used by the Gamma-ray Bursts Polarimeter（POLAR） and the Insight Hard Xray Modulation Telescope（Insight-HXMT） to follow up the bursts of interest. For GRB 170817 A, the first EM counterpart of GW events detected by Fermi/GBM and INTEGRAL/SPI-ACS, the pipeline gave T90 and spectral information 21 min after the GBM trigger, providing important information for POLAR and Insight-HXMT observations.

关键词： gamma-ray bursts general - polarization - radiation mechanisms non-thermal

Post-dilatation improves stent apposition in patients with ST-segment elevation myocardial infarction receiving primary percutaneous intervention: A multicenter, randomized controlled trial using optical coherence tomography

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World Journal of Emergency Medicine 2020年第2期11卷 87-92页

作者： Jun jiang Nai-liang Tian Han-bin cui Chang-ling li Xian-bao liu liang Dong Yong Sun Xiao-min Chen shao-liang Chen Bo Xu jian-an Wang Department of Cardiology the Second Affi liated Hospital of Zhejiang University School of MedicineHangzhouChina Department of Cardiology Nanjing First HospitalNanjingChina Department of Cardiology Ningbo First HospitalNingboChina Department of Cardiology Fuwai HospitalNational Center for Cardiovascular DiseasesBeijingChina

BACKGROUND: Stent failure is more likely in the lipid rich and thrombus laden culprit lesions underlying ST-segment elevation myocardial infarction(STEMI).This study assessed the effectiveness of post-dilatation in primary percutaneous coronary intervention(pPCI) for acute ***: The multi-center POST-STEMI trial enrolled 41 consecutive STEMI patients with symptom onset liant balloon was inflated to >16 atm *** apposition and coverage were evaluated by optical coherence tomography(OCT) after intracoronary verapamil administration via thrombus aspiration catheter, post pPCI and at 7-month *** primary endpoint was rate of incomplete strut apposition(ISA) at 7 months after ***: There were similar baseline characteristics except for stent length(21.9 [SD 6.5] mm vs.26.0 [SD 5.8] mm, respectively, P=0.03).In post-dilatation *** group, ISA rate was lower(2.5% vs.4.5%, P=0.04) immediately after pPCI without affecting final TIMI flow 3 rate(95.2% vs.95.0%, P>0.05) or corrected TIMI frame counts(22.6±9.4 vs.22.0±9.7, P>0.05); and at 7-month follow-up(0.7% vs.1.8%, Plinical *** identifier: NCT02121223).

关键词： ST-segment elevation myocardial infarction Post-dilatation Incomplete strut apposition Optical coherence tomography