Dilution refrigerator with superconducting magnet and microwave lines

基于拓扑学的数学原理，拓扑材料有望实现物质的新状态，具有奇异但健壮的性质。它们还提供了一种支持系统，可以对本地扰动具有很强的鲁棒性，将非本地信息编码为“拓扑量子比特”。新兴的“拓扑量子计算”正是为了解决量子计算机实现中的退相干问题而提出的设想。然而，这种拓扑量子比特的实现仍然是一个实验挑战。它依赖于高度工程化的纳米设备，充分结合了拓扑相、超导电性和磁性。计划中的稀释制冷机系统是开发拓扑设备，特别是量子比特的必要工具。计划中的主要仪器将用于在超低温下冷却结合高质量拓扑绝缘体和超导体的拓扑器件的样品。然后，该系统将允许在强磁场中和空间的所有方向(矢量磁铁)测量这些样品。其目标是识别、触发、控制和操纵物质的强拓扑相中的拓扑激发，例如量子反常效应。

Based on the concepts arising from the mathematical discipline of topology, topological materials promise to realize new states of matter with exotic, but robust properties. They also provide a support system to encode information non-locally in ‘topological quantum bits’ robust to local perturbations. The emerging ‘topological quantum computation’ is as such an envisioned solution to decoherence problems in the realization of quantum computers. The implementation of such topological quantum bits remains however an experimental challenge. It relies on highly engineered nanodevices adequately combining topological phases, superconductivity and magnetism. The planned dilution refrigerator system is an essential tool for the developments of topological devices, and in particular quantum bits. The planned major instrument will be used for cooling down samples of topological devices combining high-quality topological insulators and superconductors at ultra-low temperature. The system will then allow for the measurements of these samples in strong magnetic fields, and in all directions of space (vector magnet). The objectives are to identify, trigger, control and manipulate topological excitations in robust topological phases of matter, such as the quantum anomalous effect.