论文标题
准紧凑的局部边界状态在准1D电子钻石颈链中
Compact localized boundary states in a quasi-1D electronic diamond-necklace chain
论文作者
论文摘要
零能量模式位于一维（1D）电线末端的零能模式，作为容耐故障量子计算的量子位的巨大潜力。但是，所有已知迄今已知的候选者都表现出波动函数，该波函数呈指数衰减，并与附近的其他零模型杂交，从而阻碍了它们用于编织操作的使用。在这里，我们表明，准1D钻石颈链链表现出完全无法预见的强大边界状态，即紧凑的局部零能量模式不会腐烂到散装中。从理论上讲，我们设计了晶格的几何形状来访问此模式，并在电子量子模拟器设置中实现了实验。我们的工作为实现强大而紧凑的局部零能量模式提供了一条一般途径，这些模式可能会在没有杂交的缺点的情况下编织。
Zero-energy modes localized at the ends of one-dimensional (1D) wires hold great potential as qubits for fault-tolerant quantum computing. However, all the candidates known to date exhibit a wave function that decays exponentially into the bulk and hybridizes with other nearby zero-modes, thus hampering their use for braiding operations. Here, we show that a quasi-1D diamond-necklace chain exhibits a completely unforeseen type of robust boundary state, namely compact localized zero-energy modes that do not decay into the bulk. We theoretically engineer a lattice geometry to access this mode, and experimentally realize it in an electronic quantum simulator setup. Our work provides a general route for the realization of robust and compact localized zero-energy modes that could potentially be braided without the drawbacks of hybridization.
