论文标题
淬灭性手性模型中时间依赖性拓扑转变的批量检测
Bulk detection of time-dependent topological transitions in quenched chiral models
论文作者
论文摘要
一维手性系统的拓扑是由哈密顿特征态的绕组数量捕获的。在这里，我们表明，可以通过测量单个粒子波函数的平均手性位移来读取这种不变的，该粒子波函数通过统一和翻译不变的映射连接到完全位置的单粒子波函数。值得注意的是，这意味着即使在不同的拓扑阶段淬灭底层的哈密顿量，平均手性位移也可以检测到绕组数。我们在实验中确认这些结果在结构化的量子步行中。
The topology of one-dimensional chiral systems is captured by the winding number of the Hamiltonian eigenstates. Here we show that this invariant can be read-out by measuring the mean chiral displacement of a single-particle wavefunction that is connected to a fully localized one via a unitary and translational-invariant map. Remarkably, this implies that the mean chiral displacement can detect the winding number even when the underlying Hamiltonian is quenched between different topological phases. We confirm experimentally these results in a quantum walk of structured light.
