Protection of quantum information in small clusters of qubits

保护小量子位簇中的量子信息

• 批准号: EP/Z000505/1
• 负责人: Eran Ginossar
• 金额: $ 26.63万
• 依托单位: University of Surrey
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FZ000505%2F1
• 关键词: Protection; quantum; information; small; clusters

Modern digital electronics has reached an important junction. The traditional way of delivering ever stronger computing power by simple miniaturisation is no longer possible. One potential avenue for future electronics lies in Quantum Computing which can potentially deliver enormous computational power for certain tasks. Over the last decade, improvements in the materials, design and new architectures for realising qubits have led to an impressive increase of their coherence time. Yet, further improving coherence is imperative to achieving a fault tolerant quantum processor. We propose an approach to enhance qubit coherence by orders of magnitude, based on storing quantum information in the lowest energy states ofshort qubit chains. This encoding is protected from major sources of decoherence due to a high degree of spatial symmetry supported by long range interactions. In this project we will apply these principles to both Rydberg atoms and superconducting circuits which are architectures that have the required properties to support this approach. The project will also develop protocols to couple, control, readout and benchmark the qubits. Finally, this project aims to reach a level of technological maturity such that this approach will have near term applications in today's quantum computing industry.

现代数字电子设备达到了重要的交界处。不再可能通过简单的小型化来传达更强大的计算能力的传统方式。未来电子产品的潜在途径在于量子计算，它可能会为某些任务提供巨大的计算能力。在过去的十年中，材料，设计和新的架构的改进导致了它们的连贯性时间令人印象深刻。然而，进一步改善的连贯性对于实现耐受的量子处理器至关重要。我们提出了一种通过数量级增强量子相干性的方法，基于在旋转量链的最低能量状态下存储的量子信息。由于高范围相互作用支持的高度空间对称性，该编码受到了主要的破坏源的保护。在这个项目中，我们将将这些原理应用于Rydberg原子和超导电路，这些电路是具有支持此方法所需属性的体系结构。该项目还将开发协议，以对QUBITS进行夫作，控制，读数和基准测试。最后，该项目旨在达到一定程度的技术成熟度，以便这种方法在当今的量子计算行业中具有近期的应用。