论文标题
被困的Rydberg离子：量子信息处理的新平台
Trapped Rydberg ions: a new platform for quantum information processing
论文作者
论文摘要
在本章中，我们介绍了被困的Rydberg离子实验的概述，并概述了开发此新平台用于量子计算，传感和仿真的应用的优点和挑战。被困的rydberg离子具有几种重要的特性，它们的组合独特：它们在保罗陷阱的谐波潜力中紧密地束缚，其中可以以精确的方式控制其内部和外部自由度。已经证明了离子内部和运动状态的高保真状态准备，并且已经采用了内部状态来存储和操纵Qubit信息。此外，可以在rydberg状态的离子之间实现强的偶极相互作用，并探索用于研究相关的多体系统。通过激光耦合到Rydberg状态，可以增强和调节离子的极性。这可以用来控制与Paul陷阱中的陷阱场以及离子之间的偶极相互作用的相互作用。因此，与正常模式被捕获的离子介导的方法相比，被困的rydberg离子是快速纠缠操作的有吸引力的替代方法，这对于未来的量子计算机或量子模拟器是有利的。
In this chapter, we present an overview of experiments with trapped Rydberg ions and outline the advantages and challenges of developing applications of this new platform for quantum computing, sensing and simulation. Trapped Rydberg ions feature several important properties, unique in their combination: they are tightly bound in a harmonic potential of a Paul trap, in which their internal and external degrees of freedom can be controlled in a precise fashion. High fidelity state preparation of both internal and motional states of the ions has been demonstrated, and the internal states have been employed to store and manipulate qubit information. Furthermore, strong dipolar interactions can be realised between ions in Rydberg states and be explored for investigating correlated many-body systems. By laser coupling to Rydberg states, the polarisability of the ions can be both enhanced and tuned. This can be used to control the interactions with the trapping fields in a Paul trap as well as dipolar interactions between the ions. Thus, trapped Rydberg ions present an attractive alternative for fast entangling operations as compared to those mediated by normal modes of trapped ions, which are advantageous for a future quantum computer or a quantum simulator.
