充氢空芯光纤中的频率转换：功率扩展、背景与带宽
Frequency conversion in a hydrogen-filled hollow-core fiber: power scaling, background, and bandwidth
AI总结：
本文验证了充氢空芯光纤频率转换在强泵浦场下性能不下降、几乎无背景噪声且本质宽带的三个论断，克服了晶体方案的噪声、带宽和温度均匀性问题。
摘要：
基于光纤的大面积量子网络允许近红外波长的光子在传输过程中损耗极小。量子频率转换是一种在保持单光子量子态的同时改变其波长的方法。最常见的是采用非线性晶体进行这种转换过程，并且已经展示了接近统一的高保真转换效率。然而，基于晶体的转换过程受到强背景噪声、非常有限的光谱带宽以及强泵浦场下温度分布不均匀等问题的困扰。在之前的工作中，我们展示了充氢空芯光纤中的频率转换，并声称这种转换过程在强泵浦场下不会降低性能，基本上没有背景噪声，并且本质上具有宽带特性。在这里，我们证明了这三个论断是合理的。
英文摘要：
Large-area quantum networks based on optical fibers allow photons at near-infrared wavelengths to travel with minimal loss. Quantum frequency conversion is a method to alter the wavelength of a single photon while maintaining its quantum state. Most commonly, nonlinear crystals are employed for this conversion process, where near-unity conversion efficiency at high fidelity has been demonstrated. Still, the crystal-based conversion process is plagued by strong background noise, very limited spectral bandwidth, and inhomogeneous temperature profiles at strong pump fields. In previous work, we have demonstrated frequency conversion in hydrogen-filled hollow-core fibers and claimed that this conversion process does not compromise performance at strong pump fields, is essentially free of background noise, and intrinsically broadband. Here, we demonstrate that these three claims are justified.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
