论文标题
拓扑受到拓扑的强耦合和纠缠远处的量子发射器之间的纠缠
Topologically protected strong coupling and entanglement between distant quantum emitters
论文作者
论文摘要
远处量子发射器（QE）之间强大的强耦合和纠缠的实现对于可扩展的量子信息过程非常重要。但是，很难根据常规系统实现它。在这里，我们从理论上提出建议，并在数字上证明了一个实现这种强大耦合和纠缠的方案。我们的方案基于具有拓扑保护的边缘状态和零维拓扑角腔的光子晶体平台。当将QE放入拓扑腔中时，可以在拓扑保护的界面状态下实现它们之间的强耦合。如此强大的耦合可以保持很长的距离，并且可以抵抗各种缺陷。特别是，我们从数值上证明，也可以实现两个QE之间受拓扑保护的纠缠。此外，此类纠缠的量子节拍的持续时间比常规光子腔中的纠缠量的订单更长的订单可能更长，这使得它对可扩展的量子信息过程非常有益。
The realization of robust strong coupling and entanglement between distant quantum emitters (QEs) is very important for scalable quantum information processes. However, it is hard to achieve it based on conventional systems. Here, we propose theoretically and demonstrate numerically a scheme to realize such strong coupling and entanglement. Our scheme is based on the photonic crystal platform with topologically protected edge state and zero-dimensional topological corner cavities. When the QEs are put into topological cavities, the strong coupling between them can be fulfilled with the assistance of the topologically protected interface state. Such a strong coupling can maintain a very long distance and be robust against various defects. Especially, we numerically prove that the topologically protected entanglement between two QEs can also be realized. Moreover, the duration of quantum beats for such entanglement can reach several orders longer than that for the entanglement in a conventional photonic cavity, making it be very beneficial for a scalable quantum information process.
