MOSQUITO: MObile Spin-based QUantum Information sTOrage

利用量子力学原理的设备可以彻底改变我们通信、计算和测量的方式。例如，基于单光子交换的通信链路可以生成秘密加密密钥，检测可能的窃听者的存在。与经典通信网络一样，量子网络需要本地存储器和处理单元来存储和处理信息。MOSQUITO研究了与基于紧凑且可扩展的碳化硅（SiC）器件的便携式多量子位量子网络节点演示相关的物理学。该设备能够在低温下将光量子态有效地存储到核自旋上，将它们保存到环境条件下，并且在室温下可以访问。设想的集成器件在近红外光学区域（接近电信波长）工作，并首次在与标准工业处理兼容的单一平台上嵌入自旋电子，电子和光子功能。这一突破是由碳化硅的独特性质实现的，其特征是具有出色的自旋相干性的色中心，明亮的自旋/光子界面以及成熟的生长和纳米制造技术。MOSQUITO将为兼容电信网络的集成量子中继器开辟道路。此外，它还将为便携式量子网络节点奠定基础，这种技术可以促进量子增强通信安全的实际部署。

Devices exploiting the principles of quantum mechanics can revolutionize the way we communicate, compute and measure. For example, communication links based on the exchange of single photons can generate secret encryption keys, detecting the presence of possible eavesdroppers. As for classical communication networks, quantum networks require local memories and processing units to store and process information. MOSQUITO investigates the physics related to the demonstration of a portable multi-qubit quantum networking node based on a compact and scalable silicon carbide (SiC) device. The device enables efficient storage of optical quantum states onto nuclear spins at cryogenic temperature, preserves them up to ambient conditions and is accessible at room temperature. The envisioned integrated device operates in the near-infrared optical region (close to telecom wavelength) and embeds for the first time spintronic, electronic and photonic functionalities on a single platform compatible with standard industrial processing. This break-through is enabled by the unique properties of silicon carbide, which features colour centres with excellent spin coherence, a bright spin/photon interface and established growth and nano-fabrication techniques. MOSQUITO will open the way to integrated quantum repeaters compatible with telecom networks. Additionally, it will lay the foundations for portable quantum networking nodes, a technology that could facilitate real-world deployment of quantum-enhanced communication security.