Opto-Spintronic interfaces for next generation quantum networks - (SpinNet)

用于下一代量子网络的光自旋电子接口 - (SpinNet)

• 批准号: EP/X017850/1
• 负责人: Rair Macedo
• 金额: $ 25.78万
• 依托单位: University of Glasgow
• 依托单位国家: 英国
• 项目类别: Research Grant
• 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=EP%2FX017850%2F1
• 关键词: Opto; Spintronic; interfaces; next; generation

Quantum computing is becoming a rapidly maturing field, hastening the need for novel technologies that can enable distributed quantum information to create quantum computer networks. Such quantum network, or quantum internet, is expected to offer unprecedented capabilities as well as enable us to perform tasks that are impossible to carry out with today's web. Whilst a more secure network would be one of the first applications of a quantum internet, connecting quantum devices together will have a disruptive and transformative impact on how we perform several other tasks. For instance, it would then be possible to solve problems that are currently impossible to achieve using classical computers, or even using a single quantum computer, including carrying out large-scale sensing experiments in astronomy, materials discovery, and life sciences without the need for the exchange of vast amounts of data.Superconducting qubits-operating at microwave frequencies-are central to current world-leading quantum computing platforms and now serve as the basis for prototype quantum computers comprising several tens of qubits. Other architectures for quantum computing have also gained significant interest in recent years, such as semiconductor spin qubits and more recently-just last year-more sophisticated systems using magnetic monopoles in artificial ices have been proposed as an exciting route for quantum information processing. Whether superconducting or spin-based, the qubits' microwave signals are, however, a key hurdle in achieving large-scale quantum information distribution as they are extremely susceptible to thermal noise and/or the signal frequencies are in the microwave band. Thus, preventing the propagation of quantum signals over a long distance and making it unviable to network microwave quantum computers. Here, we propose to develop an entanglement-preserving microwave-qubit to-optical qubit interface, that will allow for the distribution of quantum states over many kilometres of fibre optical cables or through free-space channels. Realising such an interface would be critical in forming the basis of a global network of quantum computers and to realise a truly quantum internet.

量子计算正成为一个快速成熟的领域，加快了对可以启用分布式量子信息创建量子计算机网络的新技术的需求。这种量子网络或量子互联网有望提供前所未有的功能，并使我们能够执行无法使用当今网络执行的任务。虽然更安全的网络将是量子互联网的第一个应用程序之一，但将量子设备连接在一起将对我们执行其他几个任务产生破坏性和变革性的影响。 For instance, it would then be possible to solve problems that are currently impossible to achieve using classical computers, or even using a single quantum computer, including carrying out large-scale sensing experiments in astronomy, materials discovery, and life sciences without the need for the exchange of vast amounts of data.Superconducting qubits-operating at microwave frequencies-are central to current world-leading quantum computing platforms and now serve as the basis for原型量子计算机包含数十个量子位。近年来，其他用于量子计算的结构也引起了人们的重大兴趣，例如半导体旋转量值和去年最近使用磁性单极管在人造冰中使用磁性的系统，作为量子信息处理的令人兴奋的途径。但是，无论是超导或基于自旋的，Qubits的微波信号都是实现大规模量子信息分布的关键障碍，因为它们非常容易受到热噪声和/或微波带中的信号频率。因此，防止量子信号在很长的距离内的传播，并使它无法可行地网络微波量子计算机。在这里，我们建议开发一个具有纠缠的微波测量到光量子量界面，这将允许在许多公里的光纤电缆上或通过自由空间通道在许多公里的光纤上分布量子状态。意识到这种接口对于形成量子计算机的全球网络并实现真正的量子互联网至关重要。