Quantum Entanglement transfer between spin-pairs

Details Quantum Entanglement transfer between spin-pairs Quantum Entanglement transfer between spin-pairs

2010-11-24

arxiv.org/abs/1011.5352v2

International Journal of Quantum Information (IJQI) Volume: 8, Issue: 7(2010) pp. 1111-1120

Physics

Quantum Physics

6 pages; 4 figs. Accepted for publication in International Journal of Quantum Information

Scientific paper

10.1142/S0219749910006824

We investigate the transfer of entanglement from source particles (SP) to target particles (TP) in the Heisenberg interaction $ H=\vec s_{1} \cdot \vec s_{2}$. In our research, TP are two qubits and SP are two qubits or qutrits. When TP are two qubits, we find that no matter what state the TP is initially prepared in, at the specific time $t=\pi$, the entanglement of TP can attain to 1 after interaction with SP which stay on the maximally entangled state. For the TP are two qutrits, we find that the maximal entanglement of TP after interaction is relative to the initial state of TP and always cannot attain to 1 to almost all of initial states of TP. But we discuss an iterated operation which can make the TP to the maximal entangled state.

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