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Preparation of genuine Yeo-Chua entangled state and teleportation of two-atom state via cavity QED

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Science China(Physics,Mechanics & Astronomy) 2010年第12期53卷 2232-2237页

作者： zhang Wen LIU YiMin ZUO XueQin zhang zhanjun School of Physics&Material Science Anhui UniversityHefei 230039China Department of Physics Shaoguan UniversityShaoguan 512005China

We first propose a scheme for preparing the genuine Yeo-Chua 4-qubit entangled state via cavity QED. Using the genuine Yeo-Chua atomic state, we further propose a cavity QED scheme for teleporting an arbitrary two-atom state. In two schemes the large-detuning is chosen and the necessary time is designed to be much shorter than Rydberg-atom’s lifespan. Both schemes share the distinct advantage that cavity decay and atom decay can be neglected. As for the interaction manipulation, our preparation scheme is more feasible than a recent similar one. Compared with the Yeo and Chua’s scheme, our teleportation scheme has significantly reduced the measuring difficulty.

关键词： cavity QED preparation genuine Yeo-Chua atomic state teleportation arbitrary two-atom state

Simpler criterion on W state for perfect quantumstate splitting and quantum teleportation

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Science China(Physics,Mechanics & Astronomy) 2009年第12期52卷 1906-1912页

作者： ZUO XueQin LIU YiMin zhang Wen zhang zhanjun Key Laboratory of Optoelectronic Information Acquisition&Manipulation of Ministry of Education of China School of Physics&Material ScienceAnhui UniversityHefei 230039China Department of Physics Shaoguan UniversityShaoguan 512005China

A simpler criterion is presented to judge whether a W state can be taken as quantum channel forperfectly splitting or teleporting an arbitrary single-qubit state. If the W state is usable,the detailed manipulations in... 详细信息

关键词： criterion arbitrary W state quantum state splitting quantum teleportation manipulation

Criterion and flexibility of operation difficulty for perfect teleportation of arbitrary n-qutrit state with (n:n)-qutrit pure state

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Science China(Physics,Mechanics & Astronomy) 2011年第8期54卷 1476-1480页

作者： zhang ZiYun LIU YiMin zhang Wen zhang zhanjun Key Laboratory of Optoelectronic Information Acquisition & Manipulation of Ministry of Education of China School of Physics & Material Science Anhui University Hefei 230039 China Department of Physics Shaoguan University Shaoguan 512005 China School of Physics & Material Science Anhui University Hefei 230039 China

Under the preconditions that a (n:n)-qutrit pure state is taken as the quantum channel to teleport an arbitrary n-qutrit state and the sender is able to perform generalized-Bell-state measurements and publish the results, the necessary transformation operation in the receiver's site is worked out in terms of the technique of swapping states. A criterion on whether such quantum channel can be utilized for perfect teleportation is derived by virtue of the unitarity of the resultant transformation operator. Moreover, the flexibility between the measurement difficulty and the reconstruction difficulty is shown and discussed.

关键词： quantum teleportation criterion transformation operator generalized Bell-state measurement

Partition of arbitrary single-qubit information among n recipients via asymmetric(n+1)-qubit W state

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Science China(Physics,Mechanics & Astronomy) 2009年第10期52卷 1611-1617页

作者： zhang Wen LIU YiMin YIN XiaoFeng zhang zhanjun Key Laboratory of Optoelectronic Information Acquisition&Manipulation of Ministry of Education of China School of Physics&Material ScienceAnhui UniversityHefei 230039China Department of Physics Shaoguan UniversityShaoguan 512005China School of Physics&Material Science Anhui UniversityHefei 230039China

A symmetric and(n,n)-threshold scheme for a sender to partition his/her arbitrary single-qubit information among n recipients is proposed by using a newly constructed asymmetric(n+1)-qubit W *** the scheme in some giv... 详细信息

关键词： asymmetric(n+1)-qubit W state quantum information splitting arbitrary single-qubit information

A generalized tripartite scheme for splitting an arbitrary 2-qubit state with three 2-qubit partially entangled states and the Kraus measurement

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Science China(Physics,Mechanics & Astronomy) 2011年第2期54卷 281-287页

作者： XU ChunJie LIU YiMin zhang Wen zhang zhanjun School of Physics & Materials Science Anhui University. Hefei 230039 China Department of Physics Shaoguan University Shaoguan 512005 China School of Physics & Materials Science Anhui University Hefei 230039 China

We put forward a generalized tripartite scheme for splitting an arbitrary 2-qubit pure state with three 2-qubit non-maximally en-tangled states as quantum *** scheme for the first time incorporates the Kraus measurement into quantum information splitting *** contrast to the similar scheme using the same quantum channels and the ancilla-entangled measurement,our scheme is superior in terms of operation and complexity,success probability,resource consumption and effciency.

关键词： quantum state splitting non-maximally entangled state Kraus operator

Monogamy and polygamy for the generalized W-class states using unified-(q,s)entropy

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Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 10-22页

作者： Bo Li Bing Xie zhanjun zhang Heng Fan School of Computer and Computing Science Hangzhou City UniversityHangzhou 310015China Department of Mathematics East China University of TechnologyNanchang 330013China School of Information&Electronic Engineering(Sussex Artificial Intelligence Institute) Zhejiang Gongshang UniversityHangzhou 310018China Institute of Physics Chinese Academy of SciencesBeijing 100190China

We describe the entanglement distribution and restricted shareability of the multipartite generalized W-class states and their reduced density matrix under arbitrary partitions by using monogamy and polygamy relation based on the unified-(q,s)***,we provide an analytical formula of unified-(q,s)entanglement(UE)and an analytical lower bound of unified-(q,s)entanglement of assistance(UEo A)for a reduced density matrix of a generalized W-class ***,we use these two analytical formulas to derive the monogamy and polygamy inequalities for a reduced density matrix of a qudit generalized W-class(GW)*** establish two partition-dependent residual entanglements based on the new monogamy relation,which is helpful to obtain a comprehensive analysis of entanglement dynamics of generalized W-class ***,we investigate tighter monogamy and polygamy relations based on the power ofαth(α≥0)for UE andβth(β≥0)for UEo A,*** results show that the entanglement distribution characteristics of generalized W-class states satisfying stronger constraints can be described more accurately.

关键词： monogamy polygamy multiqudit unified entropy

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Renormalization of the g-Boson Effects for Os Isotopes

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Chinese journal of nuclear physics 1996年第3期18卷 160-164页

作者： zhang, zhanjun Liu, Yong Sang, Jianping Huazhong Normal Univ Wuhan China

A modified renormalization approach based on that proposed by Druce et *** *** over-all agreement between the spectra calculated here and the accurate spectra is significantly *** also useDurce’s approach to generate the renormalized *** is shown that in our microscopic study,both of the ap-proaches are very useful to the determination of several free parameters of fermion residual interactions.

关键词： Renormalization of g-boson effects Dyson boson mapping Os isotope

Numerical simulation of the temperature field of titania-bearing BF slag heated in a microwave oven

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Journal of University of Science and Technology Beijing 2008年第4期15卷 379-384页

作者： Liangying Wen Chenguang Bai Guibao Qiu Jian zhang Shengfu zhang zhanjun Long College of Materials Science and Engineering Chongqing University Chongqing 400030 China

Considering the characteristic of selective heating of microwave and the treatment of titania-bearing BF slag, a mathematical model for the heating of a slag specimen is developed. The temperature distribution in the specimen is studied by numerical simulation. The temperature in the center of the cylindrical slag specimen is the highest and the temperature decreases when the radius increases rapidly. In this case, the temperature rising rate decreases with heating time rapidly, and it tends to zero when the heating time is up to 150 s.

关键词： titania-bearing slag microwave heating temperature field numerical simulation

Quantum entanglement swapping of two arbitrary biqubit pure states

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Science China(Physics,Mechanics & Astronomy) 2016年第10期59卷 33-41页

作者： ChuanMei Xie YiMin Liu JianLan Chen XiaoFeng Yin zhanjun zhang School of Physics and Material Science Anhui University Department of Physics Shaoguan University

In this paper, the issue of swapping quantum entanglements in two arbitrary biqubit pure states via a local bipartite entangledstate projective measure in the middle node is studied in depth, especially with regard to quantitative aspects. Attention is mainly focused on the relation between the measure and the final entanglement obtained via swapping. During the study, the entanglement of formation(EoF) is employed as a quantifier to characterize and quantify the entanglements present in all involved states. All concerned EoFs are expressed analytically; thus, the relation between the final entanglement and the measuring state is *** concrete analyses, the measure demands for getting a certain amount of a final entanglement are revealed. It is found that a maximally entangled final state can be obtained from any two given initial entangled states via swapping with a certain probability;however, a peculiar measure should be performed. Moreover, some distinct properties are revealed and analyzed. Such a study will be useful in quantum information processes.

关键词： entanglement swapping arbitrary biqubit pure state bipartite Von Neumann measurement local unitary transformation