Quantum networks of atoms and molecules

单个原子和分子可以用一组紧密聚焦的激光束来捕获，这种激光束被称为“镊子陷阱”。这些陷阱可以重新排列成任意数组。粒子可以存储量子信息，粒子之间的相互作用可以用来纠缠它们并实现量子门。这种系统在量子模拟、量子信息处理和计量中越来越受欢迎。同时包含分子和里德伯原子的杂化系统特别令人感兴趣。在这里，量子信息可以存储在通过共振偶极子-偶极子相互作用与里德伯原子间接相互作用的分子的长寿命超精细或旋转状态中。原子也可以用于分子的非破坏性读出。这个项目的目的就是实现这些想法。我们将首先制作单个捕获原子的小阵列，并学习如何重新排列它们并将它们激发到里德伯态。然后我们将制作分子阵列，并学习如何将它们用作量子位，以及如何实现高保真度的单量子位操作。最后，我们将与单个原子一起捕获一对分子，控制它们的间距，并实现里德堡介导的双量子比特门和非破坏性读出方法

Single atoms and molecules can be trapped using an array of tightly focussed laser beams known as tweezer traps. These traps can be rearranged into arbitrary arrays. The particles can store quantum information and the interactions between the particles can be used to entangle them and implement quantum gates. Such systems are becoming increasingly popular for quantum simulation, quantum information processing and metrology. Hybrid systems containing both molecules and Rydberg atoms are of particular interest. Here, quantum information can be stored in long-lived hyperfine or rotational states of the molecules which interact indirectly though resonant dipole-dipole interactions with the Rydberg atoms. The atoms can also be used for non-destructive readout of the molecules. The aim of this project is to implement these ideas. We will first make small arrays of single trapped atoms and learn how to rearrange them and to excite them to Rydberg states. Then we will make arrays of molecules and learn how to use them as qubits and how to implement single qubit operations with high fidelity. Finally, we will trap a pair of molecules together with a single atom, control their spacing, and implement Rydberg-mediated two-qubit gates and non-destructive readout methods