论文标题
观察非固态旋转非单身动力学的非热拓扑
Observation of non-Hermitian topology with non-unitary dynamics of solid-state spins
论文作者
论文摘要
非热拓扑阶段表现出许多异国情调的特征，这些特征没有遗传学对应物，包括皮肤效应和传统散装式对应关系的分解。在这里，我们实施了非固体Su-Schrieffer-Heeger（SSH）Hamiltonian，它是一种用于研究非炎性拓扑阶段的典型模型，其固态量子模拟器由电子自旋和由$^{13} $ c核旋转组成的nitrogen-vaccancy（NV）中心的核旋转。通过采用扩张方法，我们意识到电子旋转的所需的非单身动力学，并在动量空间中绘制出其自旋纹理，可以直接从中获得相应的拓扑不变。我们的结果为进一步利用和理解具有固态旋转或其他量子仿真平台的非高拓扑阶段的有趣特性铺平了道路。
Non-Hermitian topological phases exhibit a number of exotic features that have no Hermitian counterparts, including the skin effect and breakdown of the conventional bulk-boundary correspondence. Here, we implement the non-Hermitian Su-Schrieffer-Heeger (SSH) Hamiltonian, which is a prototypical model for studying non-Hermitian topological phases, with a solid-state quantum simulator consisting of an electron spin and a $^{13}$C nuclear spin in a nitrogen-vacancy (NV) center in a diamond. By employing a dilation method, we realize the desired non-unitary dynamics for the electron spin and map out its spin texture in the momentum space, from which the corresponding topological invariant can be obtained directly. Our result paves the way for further exploiting and understanding the intriguing properties of non-Hermitian topological phases with solid-state spins or other quantum simulation platforms.
