近日，英国格拉斯哥大学的Romuald Kilianski及其研究团队取得一项新进展。他们对导电楔周边原子拐角附近的衰变率和纠缠进行了研究。相关研究成果已于2024年12月16日在国际知名学术期刊《物理评论A》上发表。

本研究探讨了尖角的存在如何改变衰变态势。研究人员利用了在具有任意开口角的，完美导电楔存在下的赫兹势和矢量势的解析表达式，来获得相关的静电格林函数。

研究人员利用这些函数研究了两种情况：一是单个原子自发衰变的改变，这使研究人员推测其在显微镜中的潜在应用；二是更具基础理论意义的情况，即一对纠缠原子在拐角附近的行为。当两个原子处于“视线之外”时，后者为开发能够“拐角透视”的器件提供了一条可能的探索途径。

附：英文原文

Title: Atoms near a conducting wedge: Decay rates and entanglement around a corner

Author: Romuald Kilianski, Robert Bennett

Issue&Volume: 2024/12/16

Abstract: The behavior of an atomic system is influenced by introducing a metallic surface. This work explores how the decay landscape can be altered by the presence of sharp corners. We utilize analytical expressions for Hertz and vector potentials in the presence of a perfectly conducting wedge with arbitrary opening angle to obtain the relevant electrostatic Green's functions. We use these to examine two scenarios: the modified spontaneous decay of a single atom, which leads us to speculate about potential applications in microscopy, and the case of a more fundamental, theoretical interest, the behavior of an entangled pair of atoms near a corner. The latter, when two atoms are positioned “out of the line of sight,” opens up a possible line of investigation into devices that are able to “see around corners.”

DOI: 10.1103/PhysRevA.110.062812

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.110.062812