Cavity-QED with Ions in a Micro Trap

在这个提议中，我们描述了用高精细度光学腔模式实现单离子或小线性离子晶体之间强耦合的实验实现。离子在微结构的分段线性离子阱中传输到微腔模式，该模式集成在100μm距离的特殊制备的光纤阱设计中。由于相应的模体积很小，我们达到了强耦合状态，其中相干光物质相互作用占主导地位，超过自发衰变和腔损失的耗散，即使在腰部有一个离子。我们的目的是研究我们的实验在耗散光相互作用检测离子内态的应用。我们将研究单离子和双离子晶体的光诱导量子门操作，作为与腔模式共同相互作用的结果。最后，我们的离子-光界面可以应用于光子与离子的纠缠。

In this proposal, we describe the experimental realization of the strong coupling between a single ion, or a small linear ion crystal, with the mode of a high finesse optical cavity. The ion is transported in a micro-structured segmented linear ion trap into the mode of a micro-cavity, which is integrated in the trap design and which is based on special prepared optical fibers at 100μm distance. As the corresponding mode volume is small, we reach the strong coupling regime, where the coherent light-matter interaction dominates over dissipation from spontaneous decay and cavity losses even with a single ion in the waist. We aim to investigate application of our experiment for a detection of the ion internal state by a dissipative light interaction. We will investigate light induced quantum gate operations for single ions and two ion crystals, as a result of the common interaction with the cavity mode. Finally, our ion-light interface may be applied to entangle photons with ions.