论文标题
在拓扑su-schrieffer-heeger链中，快速且坚固的量子状态转移，次要到近纽布互动
Fast and robust quantum state transfer in a topological Su-Schrieffer-Heeger chain with Next-to-Nearest-Neighbour interactions
论文作者
论文摘要
我们建议一种在Su-Schrieffer-Heeger（SSH）链中快速且稳健的量子态转移的方法，该方法利用了近代最高的邻居（NNN）相互作用的使用。拟议的量子协议结合了一个拓扑边缘状态之一的快速变化，这是由最接近近纽布相互作用的调节引起的，并进行了对NNN相互作用的微调。后者取消了从边缘状态多重性到能带的非绝热激发。我们将这种快捷技术用于单个二聚链上的边缘状态的拓扑泵送，并通过将二合一的Su-Schrieffer-Heeger链条与不同的拓扑顺序连接起来的界面。我们研究了该方案针对不相关和相关性疾病的鲁棒性，并证明了与传统的拓扑链的绝热协议相比，它对前者的韧性很强。我们表明，引入该疾病的空间相关性会增加协议的鲁棒性，从而扩大其适用性范围。
We suggest a method for fast and robust quantum-state transfer in a Su-Schrieffer-Heeger (SSH) chain, which exploits the use of next-to-nearest-neighbour (NNN) interactions. The proposed quantum protocol combines a rapid change in one of the topological edge states, induced by a modulation of nearest-neighbour interactions, with a fine tuning of NNN interactions operating a counter-adiabatic driving. The latter cancels nonadiabatic excitations from the edge state multiplicity to the energy bands. We use this shortcut technique for topological pumping of edge states on a single dimerized chain and also through an interface that connects two dimerized Su-Schrieffer-Heeger chains with different topological order. We investigate the robustness of this protocol against both uncorrelated and correlated disorder, and demonstrate its strong resilience to the former in comparison to traditional adiabatic protocols for topological chains. We show that introducing spatial correlations in the disorder increases the robustness of the protocol, widening the range of its applicability.
