We propose a setup, based on a periodically driven spin chain, that can realize a high-quality quantum router. We present two protocols, which utilize this setup, that can either generate highly entangled two-qubit states over an arbitrary distance or transfer single-qubit states with high fidelity to any desired location on the chain. In addition, we can execute several protocols at the same time and also store quantum states on the spin chain. Our protocols exploit the effect of coherent destruction of tunneling to control, which spins on the chain couple to each other. This control is acquired by suitably shaping the external driving field. The success of our protocols does not depend on the values of the couplings between the spins as long as they are finite and much smaller than the driving frequency. Our setup is scalable, robust against errors, and may be of practical use for future quantum information technologies.

中文翻译：

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驱动自旋链作为高质量量子路由器

我们提出了一种基于周期性驱动的自旋链的装置，该装置可以实现高质量的量子路由器。我们提出了两种利用此设置的协议，它们可以在任意距离上生成高度纠缠的两个qubit状态，也可以将高保真度的单个qubit状态传输到链上的任何所需位置。此外，我们可以同时执行多种协议，并将量子状态存储在自旋链上。我们的协议利用了隧道连贯破坏的影响来控制，它们在链上彼此旋转。通过适当地成形外部驱动场来获得该控制。我们的协议的成功与否取决于旋转之间的耦合值，只要它们是有限的并且远小于驱动频率即可。我们的设置是可扩展的，