Feasibility of Si-based Quantum Information Processing

量子计算（QC）将在未来十年从根本上改变信息传输和处理的方式。预计这一转变将影响电信行业。对于电信部门和Ciena来说，一个具有战略重要性的领域是，当量子计算机有可能破坏许多密码系统时，如何保持安全通信。电信部门可以将量子计算机用于未来的许多应用，包括量子密码学、网络优化、地面光纤网络中的量子网络以及人工智能应用。虽然有许多方法可以实现量子比特，量子计算机的基本构建块，Ciena有兴趣研究使用Si技术的可行性，Si技术是电信系统的首选硬件平台。Ciena预计，拟议的研究将通过实验证明硅基量子比特的潜力，以及所需的高速电子控制器电路和在4 K以上工作的可能性，以及以后在更高温度下工作的可能性。我们将（i）研究最先进的商用3nm FinFET技术在4 K以上工作的量子处理器（QP）中的潜力，（ii）开发空穴自旋量子比特门的行为模型，以及（iii）实验研究一维（1D）线性量子点（QD）、耦合QD、和线性量子比特阵列，具有超过256个单自旋和双自旋，在生产CMOS中的自旋量子位，用于与单片QP中的控制和读出电子器件集成。 我们的可扩展QP有可能彻底改变计算。在10年内，这样的量子计算机将与台式计算机大小相当，小到足以部署在工作场所、医院、医生办公室和家庭中。因此，我们世界一流的技术和研究将使我们成为首批展示低成本、高温、单片QP的公司之一，从而在QC领域保持全球领先地位，创造新产品和商业机会，并帮助解决迄今为止棘手的问题，造福加拿大人。

Quantum computing (QC) will fundamentally change the way information is transmitted and processed in the next decade. This transformation is expected to impact the telecommunication industry. An area of strategic importance for the telecom sector and Ciena is how to maintain secure communication when a quantum computer has the potential to break many cryptography systems. The telecommunications sector could make use of quantum computers for many applications in the future, including quantum cryptography, network optimization, quantum networking in terrestrial fiber networks, and AI applications. While there are many approaches to implement qubits, the basic building blocks of quantum computers, Ciena is interested in investigating the viability of using Si technology, the preferred hardware platform for telecommunication systems. Ciena expects that the proposed research will demonstrate experimentally the potential for Si-based qubits with the required high-speed electronic controller circuitry and the possibility for operating above 4 K and, later, at even higher temperatures.We will (i) study the potential of the most advanced commercial 3nm FinFET technology for quantum processors (QPs) operating above 4 K, (ii) develop behavioural models for hole-spin qubit gates, and (iii) investigate experimentally the manufacturability of one-dimensional (1D) linear quantum dot (QD), coupled QD, and linear qubit arrays with more than 256 single-spin and double-spin qubits in production CMOS for integration with the control and readout electronics in monolithic QPs. Our scalable QP has the potential to revolutionize computing. Within 10 years, such a quantum computer will be about the size of a desktop computer, small enough to be deployed in workplaces, hospitals, doctors' offices, and homes. Thus, our world-class technology and research will enable global leadership in QC by allowing us to be among the first to demonstrate low-cost, elevated temperature, monolithic QPs, creating new products and business opportunities, and helping to solve so-far intractable problems to the benefit of Canadians.