Afsharnia Mina, Junaid Saher, Saravi Sina, Chemnitz Mario, Wondraczek Katrin, Pertsch Thomas, Schmidt Markus A, Setzpfandt Frank
Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Straße 15, 07745, Jena, Germany.
Leibniz Institute of Photonic Technology, Albert-Einstein-Street 9, 07745, Jena, Germany.
Sci Rep. 2024 Jan 10;14(1):977. doi: 10.1038/s41598-024-51482-0.
We experimentally demonstrate frequency non-degenerate photon-pair generation via spontaneous four-wave mixing from a novel CS-filled microstructured optical fiber. CS has high nonlinearity, narrow Raman lines, a broad transmission spectrum, and also has a large index contrast with the microstructured silica fiber. We can achieve phase matching over a large spectral range by tuning the pump wavelength, allowing the generation of idler photons in the infrared region, which is suitable for applications in quantum spectroscopy. Moreover, we demonstrate a coincidence-to-accidental ratio of larger than 90 and a pair generation efficiency of about [Formula: see text] per pump pulse, which shows the viability of this fiber-based platform as a photon-pair source for quantum technology applications.
我们通过新型充满CS的微结构光纤中的自发四波混频实验证明了频率非简并光子对的产生。CS具有高非线性、窄拉曼线、宽传输光谱，并且与微结构石英光纤具有大的折射率对比度。通过调谐泵浦波长，我们可以在大光谱范围内实现相位匹配，从而在红外区域产生闲频光子，这适用于量子光谱学应用。此外，我们展示了大于90的符合与偶然比以及每个泵浦脉冲约[公式：见原文]的对产生效率，这表明该基于光纤的平台作为量子技术应用的光子对源的可行性。
