Trapped Rydberg ions exposed to fast electric field ramps

作为本应用的核心科学案例，我们计划将两个独特的特征结合起来，这两个特征只存在于被捕获的里德堡离子中，而在中性里德堡原子或被捕获的离子的低电子能级系统中没有对应的特征——即电荷和大电极化率的组合：被捕获的电荷提供了一种理想的方法，通过施加时间相关的电场，通过强库仑相互作用来控制它们的位置。此外，里德堡离子在电场中表现出很大的极化率，因此受到不同的力。因此，我们可以激发基态和里德伯态的叠加态，并将其暴露于一个随时间变化的电场中，该电场是由施加于陷阱控制段的上下电压斜坡产生的。这个操作将诱导一个来回的离子穿梭，然而对波包的两个电子组件施加不同的力，这相当于一个相对的依赖于状态的相移。我们将以这种方式产生单离子Schrödinger闸态，并演示一种新型的快速双离子闸操作。

As a central science case of this application we plan to join twounique features that are existing only for trapped Rydberg ions andhave no counterpart in the systems of neutral Rydberg atoms or intrapped ions in low electronic levels only - that is the combination ofelectric charge and large electric polarizability: The charge of trappedions provides a ideal means to control their position by applying timedependentelectric fields acting via the strong Coulomb interaction.Additionally, Rydberg ions exhibit a large polarizability in electricfields, and thus experiencing a different force. Consequently, we mayexcite a superposition state of ground state and Rydberg state, andexpose it to a time-depending electric field, generated by an up-anddownvoltage ramp applied to the trap control segments. Thisoperation will induce a back-and-forth ion shuttle, however acting witha different force to both electronic components of the wave-packet,which is equivalent to a relative state-depending phase shift. We willgenerate such way a single ion Schrödinger cate state and ademonstrate a novel type of fast two-ion gate operation.