发表机构
Max Planck Institute for the Structure and Dynamics of Matter; RWTH Aachen University; Columbia University; Brookhaven National Laboratory（马克斯·普朗克物质结构与动力学研究所; 亚琛工业大学; 哥伦比亚大学; 布鲁海文国家实验室）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出利用更薄且介电响应相反的覆盖层重塑双曲材料内部真空场，通过双曲带重叠调控真空-物质耦合，并基于Eliashberg理论证明可远程改变二维超导层临界温度，为芯片上远程控制物质激发提供新途径。
AI 中文摘要
真空涨落可以通过光学腔、谐振器和表面极化激元模式进行工程化，但将这种控制扩展到材料内部深处仍然具有挑战性。在此，我们展示了一种更薄且具有相反符号介电响应的覆盖层可以重塑双曲材料内部的真空场。该效应要求两种材料的双曲带之间存在重叠，并会修改底部材料内部真空场与物质激发之间的耦合，同时不改变其本征介电性质。作为应用，我们利用Eliashberg理论研究了位于底部材料内部的二维超导层，表明该覆盖层可以远程改变其临界温度。我们的结果可能为近期报道的由频率匹配的双曲覆盖层引起的超导性变化实验提供解释，并提出了一种在芯片上实现物质激发和集体材料性质远程控制的途径。
英文摘要
Vacuum fluctuations can be engineered using optical cavities, resonators, and surface-polaritonic modes, but extending such control deep inside a material remains challenging. Here we show that the vacuum field inside a hyperbolic material can be reshaped by a much thinner overlayer with opposite hyperbolicity. This effect requires overlap between the hyperbolic bands of the two materials and modifies the coupling between the vacuum field and matter excitations within the bottom material, without changing its intrinsic dielectric properties. As an application, we use Eliashberg theory to study a two-dimensional superconducting layer inside the bottom material, showing that the overlayer can remotely change its critical temperature. Our results may shed light on recent experiments reporting changes in superconductivity arising from a frequency-matched hyperbolic overlayer, and suggest an on-chip route to long-range control of matter excitations and collective material properties.
