Theoretical investigation of multiplexed quantum light source in fiber ring cavities with oscillating dispersion

• Published in: Results in physics 2024-04, Vol.59, p.107554, Article 107554
• Main Authors: Qu, Chuan, Guo, Dongqin, Zhang, Hui, Liang, Shuaixi, Li, Yuanyuan, Zhang, Shenghai, Wei, Zhengtong
• Format: Article
• Language: English
• Subjects: Dispersion oscillation cavities; Multiplexed quantum light source; Nonlinear fiber optics
• ISSN: 2211-3797; 2211-3797
• DOI: 10.1016/j.rinp.2024.107554

Correlated photon pairs are the core resources for photonic quantum information technology. Multiplexed quantum light sources can appreciably improve the efficiency of quantum information processing. Here, we develop a coupled-mode mean-field model and its corresponding semiclassical theory analysis to investigate the multiple parametric-gain sidebands in dispersion-oscillation fiber-ring cavities. We present a cycle transfer matrix method to give the analytic expressions for parametric gain. From this, we can reach a physical insight, that is additional degree of freedom introduced by the modulation along fiber length is responsible for the multiple parametric-gain sidebands, where the underlying mechanism is the quasi-phase matching of four-wave mixing. Two twin signal and idler photons generated from parametric-gain sidebands are appreciably of frequency and temporal correlation, revealing promising applications in frequency-multiplexed photon pair sources. When we construct an optical cavity with spliced single mode fiber and dispersion shifted fibers, numerous parametric-gain sidebands grow in the vicinity of zero group-velocity-dispersion wavelengths of two fibers, i.e., 1310 nm and 1550 nm, both corresponding to low transmission loss windows of fibers. Therefore, frequency-multiplexed quantum light sources established on dispersion-oscillation fiber-ring cavities have the advantages in economy, remote transmission, scalability and compatibility with fiber communication network. Our work offers inspiration for the development of a multiplexed quantum light source. •A cycle transfer matrix method for obtaining parametric gain of multiple sidebands.•The quasi-phase matching is responsible for the multiple parametric-gain sidebands.•Many sidebands grow in the vicinity of zero group-velocity-dispersion wavelengths.