发表机构
Northeast Normal University; Bohai University; Ludong University; Shangrao Normal University（东北师范大学; 渤海大学; 鲁东大学; 上饶师范学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出巨原子介导的光子阻塞方案，利用巨原子空间扩展性实现多腔同时非传统与传统光子阻塞，并研究点原子系统中的双光子阻塞。
AI 中文摘要
光子阻塞是一种由于系统非线性导致输出由单光子组成的现象，该现象在点原子系统中已被广泛研究，但在巨原子系统中却鲜有探索。在本文中，我们提出了基于双腔和三腔系统且驱动场施加于第一个腔的巨原子介导的光子阻塞方案。我们表明，在点原子系统（原子仅耦合到最左侧腔）中，由于总存在一个具有单一路径的腔，同时的非传统光子阻塞（UPBs）无法发生。相比之下，巨原子的空间扩展特性使其能够耦合到多个腔，并允许引入相位和耦合强度。因此，由于多路径相消干涉，可以在多个腔中同时获得UPBs。此外，通过操控失谐，我们观察到多个腔中的同时传统光子阻塞（CPBs）。最后，我们研究了点原子多腔系统中的同时双光子阻塞（2PBs）。
英文摘要
Photon blockade is a phenomenon where the presence of system nonlinearity causes the output to consist of single photons, which has been extensively studied in point atom systems, but it is barely explored in giant atom ones. In this paper, we propose giant atom-mediated photon blockade scheme based on two cavities and three cavities systems with driving field applied to the first cavity. We show that simultaneous unconventional photon blockades (UPBs) can not occur in the point atom system (the atom coupling only to the leftmost cavity) due to there always existing a cavity to have a single path. In contrast, the spatially extended nature of giant atom enables coupling to multiple cavities and allows for the introduction of a phase and coupling strength. Consequently, simultaneous UPBs in multiple cavities can be obtained due to the multipath destructive interference. Moreover, by manipulating the detuning, we observe simultaneous conventional photon blockades (CPBs) in multiple cavities. Finally, we study simultaneous two-photon blockades (2PBs) in point atom multiple cavities system.
Journal refPhys. Rev. A 114, 033734 (2026)
