354 citations
- Chinese Academy of SciencesCN45 papers
- Hong Kong University of Science and TechnologyHK10 papers
- Institute of Theoretical PhysicsCN6 papers
- Tsinghua UniversityCN5 papers
- University of Hong KongHK5 papers
- Beihang UniversityCN3 papers
- University of AntwerpBE3 papers
- City University of Hong KongHK2 papers
- Dalian University of TechnologyCN2 papers
- Institute of Applied Physics and Computational MathematicsCN2 papers
- Peking UniversityCN2 papers
- Beijing Normal UniversityCN1 paper
7 papers · 1 filter
The swap operation in the two-qubit Heisenberg XXZ model-effects of anisotropy and magnetic field
Yue Zhou, Guo-Feng Zhang, Fu-Hua Yang +1
In this paper we study the swap operation in a two-qubit anisotropic XXZ model in the presence of an inhomogeneous magnetic field. We establish the range of anisotropic parameter w…
Geometric phase of a bipartite system with Dzyaloshinski-Moriya interaction
Yue Zhou, Guo-Feng Zhang
The Berry phase of a bipartite system described by a Heisenberg XXZ model driven by a one-site magnetic field is investigated. The effect of the Dzyaloshinski-Moriya (DM) anisotrop…
Quantum teleportation via a two-qubit Heisenberg XXZ chain-effects of anisotropy and magnetic field
Yue Zhou, Guofeng Zhang
We study quantum teleportation via a two-qubit Heisenberg XXZ chain under an inhomogeneous magnetic field. We first consider entanglement teleportation, and then focus on the telep…
Disentanglement of two qubits coupled to an XY spin chain: Role of quantum phase transition
Zi-Gang Yuan, Ping Zhang, Shu-Shen Li
We study the disentanglement of two spin qubits which interact with a general XY spin-chain environment. The dynamical process of the disentanglement is numerically and analyticall…
Detecting a set of entanglement measures in an unknown tripartite quantum state by local operations and classical communication
Yan-Kui Bai, Shu-Shen Li, Hou-Zhi Zheng +1
We propose a more general method for detecting a set of entanglement measures, i.e. negativities, in an \emph{arbitrary} tripartite quantum state by local operations and classical…
Thermal entanglement in a two-qubit Heisenberg XXZ spin chain under an inhomogeneous magnetic field
Guo-Feng Zhang
The thermal entanglement in a two-qubit Heisenberg \emph{XXZ} spin chain is investigated under an inhomogeneous magnetic field \emph{b}. We show that the ground-state entanglement…