Quantum networks of atoms and molecules

原子和分子的量子网络

• 批准号: 2892756
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2892756
• 关键词: Quantum; networks; atoms; molecules

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

单个原子和分子可以用一组被称为镊子陷阱的紧密聚焦的激光束来捕获。这些陷阱可以重新排列成任意阵列。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。这样的系统在量子模拟、量子信息处理和计量学中越来越受欢迎。同时含有分子和里德伯原子的混合系统特别令人感兴趣。在这里，量子信息可以存储在分子的长寿命超精细或旋转状态中，这些分子通过共振偶极-偶极相互作用与里德伯原子间接相互作用。原子也可以用于分子的非破坏性读出。本项目的目的是实施这些想法。我们将首先制作单个被困原子的小阵列，并学习如何重新排列它们并将它们激发到里德堡态。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的单量子位操作。最后，我们将用单个原子捕获一对分子，控制它们的间距，并实现里德伯介导的双量子比特门和非破坏性读出方法