标题： 量子表面效应对耦合到表面等离激元极化子的量子发射器的影响 显示英文标题

标题： Quantum surface effects on quantum emitters coupled to surface plasmon polariton

摘要： 作为一种探索强量子化光-物质相互作用的理想平台，表面等离激元极化子（SPP）在量子技术中激发了许多应用。 最近的实验发现，金属的量子表面效应（QSEs），包括非局部光学响应、电子溢出和兰道阻尼，会破坏经典电磁理论，并为纳米尺度的SPP带来额外的损耗源。 这阻碍了其应用。 超越广泛使用的经典局部响应近似，我们使用Feibelman$d$参数方法来研究在平面金属-介质纳米结构中与SPP耦合的量子发射器（QEs）的QSE修正的非马尔可夫动力学。 发现了一种克服由具有QSEs的损耗性SPP引起的QEs耗散的机制。 我们发现，只要形成QE-SPP束缚态，就会产生远距离QEs之间的无耗散纠缠。 与局部响应近似结果相比，QSEs在建立这种相干关联中起到了建设性的作用。 这一结果为理解吸收介质中的光-物质相互作用奠定了基础，并为SPP在量子网络中的应用铺平了道路。 显示英文摘要

摘要： As an ideal platform for exploring strong quantized light-matter interactions, surface plasmon polariton (SPP) has inspired many applications in quantum technologies. Recent experiments discovered that quantum surface effects (QSEs) of the metal, including nonlocal optical response, electron spill-out, and Landau damping, invalidate the classical electromagnetic theory and contribute additional loss sources to the SPP in the nanoscale. This hinders its applications. Going beyond the widely used classical local response approximation, we use the Feibelman $d$-parameter method to investigate the QSE-modified non-Markovian dynamics of quantum emitters (QEs) coupled to a SPP in a planar metal-dielectric nanostructure. A mechanism to overcome the dissipation of the QEs caused by the lossy SPP with the QSEs is discovered. We find that, as long as the QE-SPP bound states are formed, a dissipationless entanglement among the far-separated QEs is created. Compared with the local-response approximate results, the QSEs play a constructive role in establishing such a coherent correlation. The result lays a foundation for understanding the light-matter interactions in absorptive media and paves the way for the application of SPP in quantum network.