论文标题
可调模式纠缠：拓扑su-schrieffer-heeger（SSH）链带有嵌入式aharonov-bohm量子环
Tunable mode entanglement: topological Su-Schrieffer-Heeger (SSH) chain with an embedded Aharonov-Bohm quantum ring
论文作者
论文摘要
我们研究了由SSH模型的变体，该模型由带有嵌入式Aharonov-Bohm量子环的SSH链组成。嵌入环产生的域壁状态的能量水平在带隙中。某些状态对环的磁通量的依赖性提供了一种控制两个SSH边缘费米模式之间纠缠的机制。边缘模式之间的同意定期取决于磁通量。在深层拓扑区域，对于适当的通量值，同意达到$ 0 $和$ 1 $的极端值，对应于消失的纠缠和最大的纠缠。因此，QR-SSH系统提供了一种调整机制，可以用作纠缠调节器或纠缠开关。
We investigate a variant of the SSH model consisting of an SSH chain with an embedded Aharonov-Bohm quantum ring. The embedded ring gives rise to domain wall states whose energy levels are in the band gap. The dependence of some of the states on the ring's magnetic flux provides a mechanism to control the entanglement between the two SSH edge fermion modes. The concurrence between the edge modes depends periodically on the magnetic flux. In the deep topological zone, for appropriate values of the flux, the concurrence reaches the extreme values of $0$ and $1$, corresponding to vanishing entanglement and to maximum entanglement. Therefore, the QR-SSH system offers a tuning mechanism that can be used either as an entanglement modulator or as an entanglement switch.
