近日，东北师范大学X. X. Yi团队实现了通过纳米粒子扰动操纵非厄米光学系统中的光谱跃迁和光子传输。该研究于2025年6月2日发表在《物理评论A》杂志上。

近年来，人们对奇偶时间对称性进行了广泛的研究，这涉及非厄米光学中增益和损耗的工程平衡。作为对称性的补充，反对称的概念已经成为描述具有耗散的开放系统动力学的自然框架。在这项工作中，课题组研究了受纳米粒子扰动的线性旋转谐振腔中的光谱跃迁和光子传输。

首先，证明了通过精确控制纳米粒子扰动，满足反对称性的非厄米系统的本征值（或光谱）可以转变为准闭厄米系统。 其次，概述了构建准封闭系统的基本条件，并分析了其相对于光子传输的动态行为。通过调整旋转谐振腔的旋转角速度和纳米粒子扰动的强度，准封闭系统能够实现各种光子分布行为，这可能在量子器件中具有重要应用。该发现为在现实条件下设计耗散量子器件以及理解它们对外部扰动的响应提供了宝贵的见解。

附：英文原文

Title: Manipulating spectral transitions and photonic transmission in a non-Hermitian optical system through nanoparticle perturbations

Author: Bo-Wang Zhang, Cheng Shang, J. Y. Sun, Zhuo-Cheng Gu, X. X. Yi

Issue&Volume: 2025/06/02

Abstract: In recent years, extensive research has been dedicated to the study of parity-time () symmetry, which involves the engineered balance of gain and loss in non-Hermitian optics. Complementary to symmetry, the concept of anti- symmetry has emerged as a natural framework for describing the dynamics of open systems with dissipations. In this work, we study spectral transitions and photon transmission in a linear spinning resonator perturbed by nanoparticles. First, we show that by precisely controlling the nanoparticle perturbations, the eigenvalues (or spectra) of a non-Hermitian system satisfying anti- symmetry can transit to that of a quasiclosed Hermitian system. Second, we outline the essential conditions for constructing a quasiclosed system and analyze its dynamic behavior with respect to photon transmission. By adjusting the rotational angular velocity of the spinning resonator and the strength of the nanoparticle perturbations, the quasiclosed system enables a variety of photon distribution behaviors, which may have significant applications in quantum devices. Our findings offer valuable insights for the design of dissipative quantum devices under realistic conditions and for understanding their responses to external perturbations.

DOI: 10.1103/PhysRevA.111.063702

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.111.063702