Manipulating spectral transitions and photonic transmission in a non-Hermitian optical system through nanoparticle perturbations
arXiv:2411.14862 · doi:10.1103/PhysRevA.111.063702
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 quasi-closed Hermitian system. Second, we outline the essential conditions for constructing a quasi-closed 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 quasi-closed 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.
arXiv comment9 pages, 3 figures
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