Exploring new frontiers in quantum information and open quantum systems using superconducting flux quantum bits

使用超导通量量子位探索量子信息和开放量子系统的新领域

• 批准号: RGPIN-2019-05635
• 负责人: Lupascu, Adrian
• 金额: $ 2.48万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=763035
• 关键词: Exploring; new; frontiers; quantum; information

The field of "artificial atoms" has grown tremendously over the past decade. Artificial atoms are small (nanometers to micrometers size) systems formed of superconductors. These systems behave quantum mechanically, similarly to atoms, however, their properties can be changed by design. Artificial atoms are interesting from a fundamental point of view, due to their quantum properties and the way in which they interact with their environment. Moreover, artificial atoms have become the main candidates for the implementation of quantum bits (or qubits), the building blocks of a powerful quantum computer. The proposed research program will have several thrusts, combining fundamental and applied research on superconducting artificial atoms. One unifying aspect of the proposed research is the use of one type of superconducting artificial atom - the so called flux qubit. We will build on recent developments of flux qubits with improved preservation of quantum information, or quantum coherence. The first direction we will explore is the development of improved quantum computing architectures. Quantum logic gates with flux qubits can benefit from the qubit energy level structure, which enables fast quantum gates. The increased speed, in combination with long coherence times, have the potential to reduce the errors of quantum logic gates, essential for quantum computing implementation. The second research direction will be the investigation of a new regime for atom-electromagnetic field strong interactions. A single atom coupled to the electromagnetic field is a paradigmatic open quantum system and this research will explore a new territory in this area. Finally, we will pursue experimental tests of relativistic quantum information. This is a new area of research that aims to include relativistic effects in the framework of quantum information. A fundamental prediction in this field is the ability to generate quantum correlations between two atoms at large distances. Artificial atoms are uniquely suited for these tests, due to their strong controllable coupling to light. We expect this program to have a significant and broad impact for implementation of quantum technologies and for fundamental research in the areas of quantum information, open quantum systems, and quantum optics. This research will be carried out by graduate and undergraduate students and postdoctoral researchers. These individuals will receive theoretical training in quantum information, superconductivity, and quantum physics and practical training in cryogenics, microwave electronics, microfabrication, and software. These skills will allow them to pursue an academic career or to work in companies focused on superconducting qubits, other areas of quantum information, software, and electronics manufacturing. This program will contribute to maintaining Canada at the forefront of research in quantum science and technologies.

在过去的十年中，“人造原子”的领域发展巨大。人造原子是由超导体形成的小（纳米至微米尺寸）系统。这些系统的作用与原子相似，但是它们的性质可以通过设计更改。从基本的角度来看，人造原子很有趣，因为它们的量子特性及其与环境相互作用的方式。此外，人造原子已成为实施量子位（或Qubits）的主要候选者，即功能强大的量子计算机的构件。 拟议的研究计划将有几个推力，结合了有关超导性人工原子的基本和应用研究。拟议研究的一个统一方面是使用一种类型的超导性人工原子 - 所谓的通量量子。我们将建立在最新的通量Qubits的发展，并改善量子信息或量子相干性的保存。我们将探索的第一个方向是开发改进的量子计算体系结构。量子Qubits的量子逻辑门可以从量子能量水平结构中受益，从而实现快速的量子门。加快速度与长相干时间相结合，有可能减少量子逻辑门的误差，这对于量子计算实施至关重要。第二个研究方向将研究针对原子 - 电磁场强相互作用的新制度。与电磁场耦合的单个原子是一个范式开放量子系统，该研究将探索该地区的一个新区域。最后，我们将进行相对论量子信息的实验测试。这是一个新的研究领域，旨在在量子信息的框架中包括相对论效应。该领域的基本预测是能够在大距离之间产生两个原子之间的量子相关性。人造原子非常适合这些测试，因为它们的强烈可控耦合光。我们预计该计划将对量子技术的实施以及量子信息，开放量子系统和量子光学方面的基础研究产生重大的影响。这项研究将由研究生和本科生和博士后研究人员进行。这些人将接受量子信息，超导性和量子物理学以及低温电子，微波电子，微加工和软件的实践培训的理论培训。这些技能将使他们能够从事学术职业或在专注于超导Qubits，其他量子信息，软件和电子制造的公司工作。该计划将有助于使加拿大在量子科学和技术研究的最前沿。