Silicon Quantum Technologies

量子技术的潜力正在推动全球范围内的研究。2019年，世界观察到一台53量子位的独立量子计算机，使世界顶级超级计算机的计算能力黯然失色。然而，在今天跨越数十个物理平台的最先进能力与有用的量子计算之间仍然存在鸿沟。量子计算机网络释放的容量比其各部分的总和还要大，并且考虑到预期的环境限制，它将比单片量子超级计算机更容易建造。最终，量子计算机将通过全球量子通信光纤联网，但目前还没有就实现这一雄心勃勃目标的量子硬件接口达成共识。相反，目前正在进行一项激烈的努力，以在适合量子计算的长寿命基于材料的量子比特和适合量子网络的光子之间建立一个理想的量子接口。世界上最重要的计算和电信技术都是基于硅的，但人们普遍认为硅不具备制造全硅量子互联网所必需的量子接口。西蒙斯博士最近的工作通过生产和表征最高质量的硅物质-电信光子界面来反驳这一概念。下一步，她的团队将把这些物质-光子接口部署到真实的量子设备中，并证明它们可以支撑未来的量子计算和通信技术。具体目标是：1）建立和提高单量子比特操作的保真度，使其超过量子纠错阈值; 2）通过这些自旋光子界面提供的光子相互作用，开发和演示工作多量子比特纠缠操作;在量子信息网络的硅颜色中心的未开发空间中寻求新的机会。量子互联网将提供革命性的能力，否则是不可能的。未来应用的范围可能超出我们目前的集体想象。西蒙斯博士的CRC研究计划将使她能够培养未来的量子领导者，建立在她的成就，合作和基础设施的基础上，并利用罕见的先发全球竞争优势和数十年的硅制造研发。如果成功的话，这项工作可能会导致研究工作的广泛联合，以实现共同的量子硬件主导设计。

The potential of quantum technology is fueling intense research worldwide. In 2019 the world observed a 53-qubit standalone quantum computer, eclipsing the computing power of the world's top supercomputer. Yet there remains a chasm between today's state-of-the-art capabilities, across dozens of physical platforms, and useful quantum computation. Networks of quantum computers unleash exponentially more capacity than the sum of their parts, and given expected environmental constraints, will be easier to build than monolithic quantum supercomputers. Eventually, quantum computers will be networked over global quantum telecommunication fibre optics, but there is no consensus on the quantum hardware interface that will unlock this ambitious objective. Rather, there is a fierce effort underway to prototype an ideal quantum interface between long-lived material-based qubits suitable for quantum computing, and telecommunications-band photons suitable for quantum networking. The world's foremost computing and telecommunications technologies are silicon-based, yet it was widely assumed that silicon does not have the requisite quantum interfaces necessary to make an all-silicon quantum internet. Dr. Simmons' recent work disproved this notion by producing and characterizing a silicon matter-telecom photon interface of the highest quality. Next, her team will deploy these matter-photon interfaces into real quantum devices and prove that they can underpin the quantum computation and communication technologies of the future.Specific objectives are to: 1) establish and improve the fidelity of single-qubit operations beyond quantum error-correction thresholds; 2) develop and demonstrate working multi-qubit entangling operations through the photonic interactions that these spin-photon interfaces provide; and 3) pursue new opportunities in the unexplored space of silicon colour centres for quantum information networks.A quantum internet will offer revolutionary capabilities that are otherwise impossible. The spectrum of future applications is likely beyond our current collective imaginations. Dr. Simmons' CRC research program will allow her to train future quantum leaders, build on her achievements, collaborations and infrastructure, and leverage a rare first-mover global competitive advantage and decades of silicon manufacturing R&D. If successful, this work may lead to a broad coalescence of research efforts toward a common quantum hardware dominant design.