论文标题
通过强耦合方案，通过腔冷却来增强离子腔耦合
Enhanced ion-cavity coupling through cavity cooling in the strong coupling regime
论文作者
论文摘要
在离子陷阱中掺入光腔在光子量子网络的发展中变得越来越重要。但是，由于腔体施加的几何约束和不利的螺旋效果，可以基本修改冷却动力学，因此腔的存在可能会妨碍离子有效的激光冷却。另一方面，还可以利用离子与空腔的耦合，以提供有效冷却离子的机制。在本文中，我们在实验上证明了如何实施腔冷却以改善离子的定位，从而改善了离子与腔的耦合。通过使用腔冷却，我们获得了增强的离子腔耦合$2π\ times（16.7 \ pm 0.1）$ MHz，而仅使用多普勒冷却时，$2π\ times（15.2 \ pm 0.1）$ MHz。
Incorporating optical cavities in ion traps is becoming increasingly important in the development of photonic quantum networks. However, the presence of the cavity can hamper efficient laser cooling of ions because of geometric constraints that the cavity imposes and an unfavourable Purcell effect that can modify the cooling dynamics substantially. On the other hand the coupling of the ion to the cavity can also be exploited to provide a mechanism to efficiently cool the ion. In this paper we demonstrate experimentally how cavity cooling can be implemented to improve the localisation of the ion and thus its coupling to the cavity. By using cavity cooling we obtain an enhanced ion-cavity coupling of $2π\times (16.7\pm 0.1)$ MHz, compared with $2π\times (15.2\pm 0.1)$ MHz when using only Doppler cooling.
