Entanglement Transfer in a Four-Qubit Dimerized Heisenberg System

Ren, Fenghua, Wang +1 more

Feng-Hua Ren, Zhao-Ming Wang

We investigate the entanglement transfer in a four-qubit system and calculate the concurrence between any two qubits in different initial states. We show that both the pure entangled state and mixed entangled state can be transferred. For some special coupling constants and some evolution time, entanglement can be completely transferred from one pair particles to another.

SunZhe, WANGXiao-Guang, HUAn-Zi +1 more

We study entanglement in dimerized Heisenberg systems. In particular, we give exact results of groundstate pairwise entanglement for the four-qubit model by identifying a Z2 symmetry. Although the entanglements cannot identify the critical point of the system, the mean entanglement of the nearest-neighbor qubits really does, namely, it reaches a maximum at the critical point.

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Sun Zhe, Wang Xiao-Guang, Hu An-Zi +1 more

We study entanglement in dimerized Heisenberg systems. In particular, we give exact results of ground-state pairwise entanglement for the four-qubit model by identifying a Z 2 symmetry. Although the entanglements cannot identify the critical point of the system, the mean entanglement of the nearest-neighbor qubits really does, namely, it reaches a maximum at the critical point.

郭战营 Guo Zhanying, 张新海 Zhang Xinhai, 肖瑞华 Xiao Ruihua +2 more