论文标题
非本地天空作为拓扑弹性量子纠缠的光状态
Non-local Skyrmions as topologically resilient quantum entangled states of light
论文作者
论文摘要
在1960年代初期，受拓扑结构的概念的启发，托尼·天际（Tony Skyrme）建议亚原子颗粒被描述为单个量子场的自然激发。尽管从未出于其预期目的而采用，但是Skyrmion作为拓扑稳定的田野配置的概念已证明是用途高度的，在凝结物理物理学，声学和最近的光学方面找到了应用，但所有这些都被视为本地化领域和粒子。在这里，我们报告了第一个非本地量子纠缠状态，具有非平凡的拓扑结构，即使每个单个光子都没有显着的拓扑结构。我们展示了量子波函数的拓扑如何使这种量子状态可使纠缠衰减稳健，直到纠缠本身消失为止。我们的工作表明，纠缠阶层和拓扑之间存在着新生的联系，对拓扑结构的量子状态的创建和保存量子信息保持了令人兴奋的希望，即使纠缠很脆弱。
In the early 1960s, inspired by developing notions of topological structure, Tony Skyrme suggested that sub-atomic particles be described as natural excitations of a single quantum field. Although never adopted for its intended purpose, the notion of a skyrmion as a topologically stable field configuration has proven highly versatile, finding application in condensed matter physics, acoustics and more recently optics, but all realised as localised fields and particles. Here we report the first non-local quantum entangled state with a non-trivial topology that is skyrmionic in nature, even though each individual photon has no salient topological structure. We demonstrate how the topology of the quantum wavefunction makes such quantum states robust to entanglement decay, remaining intact until the entanglement itself vanishes. Our work points to a nascent connection between entanglement classes and topology, holding exciting promise for the creation and preservation of quantum information by topologically structured quantum states that persist even when entanglement is fragile.
