Canada-UK Quantum Technologies call: Scanning Probe Fabrication and Readout of Atomically Precise Silicon Quantum Technologies

该提案的目的是通过实验验证软件模块，从而允许设计和扩大基于硅的量子计算机和传感器。我们的工业合作伙伴NanoAcademic Technologies（蒙特利尔）目前正在开发用于量子技术的技术计算机辅助设计工具（TCAD）- QTCAD，重点是模拟量子计算硬件的硅基自旋量子位。硅中的量子位可以用原子定位的掺杂剂原子来实现。硅是量子计算的一种有吸引力的材料，因为它提供了非常长的相干时间（即量子而不是经典特性持续相对较长的时间）。此外，半导体行业的丰富经验可以用于未来的规模扩大。 在这项提案中，我们将与英国的合作伙伴合作，使用扫描隧道显微镜将掺杂剂原子定位在硅中的原子精确图案中。在麦吉尔大学，我们将在磁场中使用低温原子力显微镜来表征位置，并对单个和耦合的掺杂剂原子进行光谱分析，以测量它们的能级以及耦合强度和量子特性。将实验值与计算机模拟的结果进行比较将允许软件模块的验证。两个加拿大和两个英国合作伙伴都提供了实现我们目标所需的互补和独特的专业知识。 加拿大和英国的学术界和公司之间的这种国际合作将使学生得到良好的培训，在加拿大和英国的学术界和公司之间建立强有力的联系，并导致高影响力的科学。

The aim of this proposal is to experimentally validate software modules allowing the design and scale up of silicon based quantum computers and sensors. Our industrial partner, NanoAcademic Technologies (Montreal) is currently in the process of developing a Technology Computer Aided Design tool (TCAD) for quantum technology - QTCAD, with focus on simulating silicon based spin qubits for quantum computing hardware. Qubits in silicon can be implemented with atomically positioned dopant atoms. Silicon is an attractive material for quantum computing, as it provides for very long coherence times (i.e. quantum instead of classical properties persist for relatively long times). Furthermore, the vast experience of the semiconductor industry can be harnessed for future scale up. In this proposal, in collaboration with partners in the UK, we will position dopant atoms in silicon in atomic precise patterns using scanning tunneling microscopy. At McGill, we will use cryogenic atomic force microscopy in a magnetic field to characterize the position and perform spectroscopy on individual and coupled dopant atoms to measure their energy levels as well as coupling strength and quantum characteristics. Comparing the experimental values with the result of the computer simulations will allow validation of the software modules. Each of the two Canadian and two UK partners contribute complimentary and unique expertise needed to achieve our goals. This international collaboration between academics and companies in Canada and the UK will allow excellent training of students, build strong connections between academics and companies in Canada and the UK in the field of quantum technology and lead to high impact science.