Canadian consortium for Quantum-Engineered States and Transduction (CanQuEST)

量子技术在我们的社会中发挥着越来越重要的作用，经典网络所施加的限制也变得越来越明显。举一个值得注意的例子，量子计算机的发展提供了一种新的计算范式，依赖于量子力学现象来解决经典计算机难以证明的问题。在这种情况下，量子网络的实现不仅可以实现量子安全通信，还可以连接计算节点，进一步促进量子计算机的发展。然而，由于量子信息无法复制，处理量子信息带来了许多挑战。因此，有必要涉及各种量子系统，以便精确控制和操纵不同模式的信息，如光子和微波信号。混合量子接口结合了超导电路、固态系统和光子器件，构成了量子计算和通信的核心元素。然而，它们的设计、开发和制造仍然极具挑战性，需要多个合作伙伴的合作。随着量子互联网关键技术的发展作为主要目标，NSERC加拿大量子工程源和转换联盟（CanQuEST）的提案在应对这一挑战方面具有独特的优势。事实上，该团队汇集了量子科学和技术互补方面的专家。具体地说，我们结合量子电路、光子学、微力学和人工原子等多方面的量子技术，提出了实现微波频率和通信波长之间的混合量子接口。CanQuEST将专注于两个应用，即双向传感器的开发以及量子传感和通信的感兴趣的复杂状态的生成。这样的使能设备仍然严重缺失，以实现能够在不同量子节点之间处理信息的量子网络。

Quantum technologies are playing an increasingly important role in our society and the limitations imposed by classical networks are becoming apparent. To mention one notable example, the development of quantum computers offer a new computational paradigm relying on quantum mechanical phenomena to solve problems that would otherwise be provably hard for classical computers. In this context, the realization of quantum networks would not only enable quantum secure communications, but would also allow connecting computing nodes, further facilitating the development of quantum computers. Nevertheless, since quantum information cannot be copied, processing quantum information poses numerous challenges. It is thus necessary to involve various quantum systems in order to precisely control and manipulate the information across different modes such as optical photon and microwave signals. Hybrid quantum interfaces, combining superconducting circuits, solid-state systems and photonic devices, constitute a central element for quantum computing and communication. Yet, their design, development, and fabrication remains extremely challenging and require the collaboration of multiple partners.With the development of key technologies for the quantum internet as main goal, this NSERC Canadian consortium for Quantum-Engineered Sources and Transduction (CanQuEST) proposal is uniquely positioned to tackle this challenge. Indeed, the team brings together experts on complementary aspects of quantum science and technology. Concretely, by combining multiple aspects of quantum technologies such as quantum circuits, photonics, micromechanics and artificial atoms, we propose to realize hybrid quantum interfaces operating between microwave frequencies and telecommunication wavelengths. CanQuEST will focus on two applications with the development of bidirectional transducers as well as the generation of complex states of interest for quantum sensing and communication. Such enabling devices are still critically missing to realize quantum network capable of processing information between different quantum nodes.