Entanglement Transfer via Heisenberg Interaction in a Four-Qubit System
Feng-Hua Ren, Zhao-Ming Wang · Communications in Theoretical Physics · 2007
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.