论文标题
低温高Q谐振器中的Erbium掺杂剂的相干和purcell增强的发射
Coherent and Purcell-enhanced emission from erbium dopants in a cryogenic high-Q resonator
论文作者
论文摘要
量身定制的宿主晶体中掺杂剂和其他类似原子的缺陷的稳定性和出色的连贯性使它们成为实施量子网络中分布式量子信息处理和传感的领先平台。尽管可以通过将其集成到纳米级共振器中实现所需的有效的轻度耦合，但在这种方法中，接口的接近性也不利于甚至最不敏感的发射器的连贯性。在这里，我们建立了一种替代方法：通过将19微米薄的浓质晶体集成到低温Fabry-perot谐振器中，质量为900万，我们可以证明59（6）的排放率增强 - 对应于530（50）的两级Purcell因子，同时保留了530（50），同时保留了1次的coserece cosertim-upitive colimitient-limitife colimentim-limentim-limitud cosheremer-0.54（0.54（0.54）。我们的系统以最小的光纤波长的发射及其远程耦合效率为46（8）％，我们的系统可实现长距离量子网络的相干和有效的节点。
The stability and outstanding coherence of dopants and other atom-like defects in tailored host crystals make them a leading platform for the implementation of distributed quantum information processing and sensing in quantum networks. Albeit the required efficient light-matter coupling can be achieved via the integration into nanoscale resonators, in this approach the proximity of interfaces is detrimental to the coherence of even the least-sensitive emitters. Here, we establish an alternative: By integrating a 19 micrometer thin erbium-doped crystal into a cryogenic Fabry-Perot resonator with a quality factor of nine million, we can demonstrate 59(6)-fold enhancement of the emission rate, corresponding to a two-level Purcell factor of 530(50), while preserving lifetime-limited optical coherence up to 0.54(1) ms. With its emission at the minimal-loss wavelength of optical fibers and its outcoupling efficiency of 46(8) %, our system enables coherent and efficient nodes for long-distance quantum networks.
