论文标题

编码状态转移:超越统一链

Encoded State Transfer: Beyond the Uniform Chain

论文作者

Kay, Alastair

论文摘要

在最近的一项工作(ARXIV:2207.01954)中,我们表明,工程旋转链可以对称地扩展一条均匀的耦合链,以使我们可以选择一部分整体系统频谱。当与避免不受控制的特征值的编码结合使用时,这可能导致可能达到一系列任务,例如完美的量子状态转移。在本文中,我们将相同的策略应用于更广泛的初始系统(任意链,甚至是旋转网络),同时为解决方案的存在提供保证。

In a recent work (arXiv:2207.01954), we showed that a uniformly coupled chain could be symmetrically extended by engineered spin chains in such a way that we could choose part of the spectrum of the overall system. When combined with an encoding that avoids the uncontrolled eigenvalues, this resulted in the possibility of achieving a range of tasks such as perfect quantum state transfer. In this paper, we apply the same strategy to a much broader range of initial systems - arbitrary chains, and even coupled networks of spins - while providing guarantees on the existence of solutions.

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