Electron and nuclear spins at the frontiers of nanotechnology and quantum information science

量子信息科学在过去二十年中已发展成为全世界关注的核心研究领域。随着成熟的量子信息技术产业的出现，通信、计算、模拟和计量领域的颠覆性应用预计将在未来几十年内得到发展。一个关键的悬而未决的问题是，“构建可扩展量子处理器的固态方法是否可行？”这种方法将极大地受益于现有基于半导体的信息技术的制造专业知识，以合理的成本实现强大的量子信息处理器。在单电子水平上工作的纳米电子器件具有填补这一角色的巨大潜力，该项目将解决使这些器件成为可行构建块的关键挑战。固态的挑战包括保持量子相干性、执行可靠的测量以及纳米级制造的设备的再现性（良率）。我们的方法将电子的电荷和自旋方面结合起来，在相干性和可控性方面获得“两全其美”。这些方法背后的想法是强大的，我们的实验将对它们进行检验。加拿大在未来量子技术世界中的竞争优势关键取决于测试这些想法所产生的创新。

Quantum information science has developed over the last two decades into a core research area of interest around the world. Game-changing applications in communication, computing, simulation and metrology are expected to develop over the next couple of decades as a full-fledged quantum information technology industry emerges. A key open question is, "can a solid-state approach to building scalable quantum processors be viable?" Such an approach would benefit greatly from the fabrication expertise of existing semiconductor-based information technologies to achieve powerful quantum information processors at reasonable cost. Nanoelectronics devices working at the single electron level have tremendous potential to fill this role, and this project will address the key challenges to making these devices viable building blocks. Challenges in the solid-state include maintaining quantum coherence, performing reliable measurements, and the reproducibility (yield) of devices fabricated at the nanoscale. Our approaches marry the charge and spin aspects of the electron to get the "best of both worlds" in terms of coherence and controllability. The ideas underlying these approaches are powerful, and our experiments will put them to the test. Canada's competitive edge in the the future world of quantum technologies depends critically on the innovations that will come from testing these ideas.