Collaborative Research: Coherent Manipulation and Transfer of Quantum Information amongst Single Spin Systems

* 技术摘要 *“量子信息科学”这一新兴领域在利用金刚石和SiC缺陷中心中的单自旋相干控制方面取得了迅速进展，为在室温下运行的量子比特开辟了一条新途径。该提案旨在将这些显着的发展扩展到由不同材料构建的异质系统中的量子信息的相干操纵和全态转移，这些材料的个体量子特性已经得到很好的理解。最终目标是在室温下实现物理上不同的量子系统之间在单自旋水平上的量子相干通信。PI将联合收割机时空分辨的单自旋光谱与模型系统的设计和制造相结合，该模型系统将单自旋（例如SiC中的缺陷）与低维通信通道（例如2DEG和纳米线）中的系综自旋耦合。拟议的研究提供了量子材料和测量方面的先进技术培训，并为学术界和工业界的未来职业提供了理想的培训。PI还将通过机构计划和合作教授科学实践的跨学科本科课程来增强本科研究的多样性和卓越性。非技术摘要 * 现代信息技术依赖于利用自然界量子力学方面的激光器、闪存和磁性隧道结等设备。这种设备技术仍然没有利用量子力学的全部技术潜力，将其功能限制在控制量子力学波的振幅上，而忽略了它们的相位。新兴的“量子信息科学”领域试图通过探索量子力学更非直观方面的技术可能性，即量子相干性和量子纠缠来纠正这一限制。量子信息处理的一个关键挑战是开发实用方案，允许系统的不同部分之间交换相干量子信息。该提案旨在证明由不同材料构建的异质系统中的这种现象，这些材料的个体量子特性得到了很好的理解。最终目标是在室温下实现物理上不同的量子系统之间在单自旋水平上的量子相干通信。拟议的研究提供了量子材料和测量方面的先进技术培训，并为学术界和工业界的未来职业提供了理想的培训。PI还将通过机构计划和合作教授科学实践的跨学科本科课程来增强本科研究的多样性和卓越性。

****Technical Abstract****The emerging area of "quantum information science" has seen rapid advances in exploiting the coherent control of single spins in defect centers in diamond and SiC, opening up a new pathway toward qubits that function at room temperature. This proposal aims to extend these remarkable developments toward the coherent manipulation and full state transfer of quantum information in heterogeneous systems built from disparate materials whose individual quantum properties are already well understood. The ultimate goal is to achieve quantum-coherent communication between physically distinct quantum systems at the single spin level and at room temperature. The PIs will combine spatio-temporally resolved single spin spectroscopies with the design and fabrication of model systems that couple single spins (such as defects in SiC) with ensemble spins in low dimensional communication channels (such as 2DEGs and nanowires). The proposed research offers advanced technical training in quantum materials and measurement and provides ideal training for future careers in academics and industry. The PIs will also enhance the diversity and excellence of undergraduate research through institutional programs and by collaboratively teaching a cross-disciplinary undergraduate course on the Practice of Science.****Non-Technical Abstract***Modern information technology relies on devices such as lasers, flash memory and magnetic tunnel junctions that exploit the quantum mechanical aspects of the natural world. Such device technologies still do not make use of the full technological potential of quantum mechanics, restricting their functionality to control over the amplitude of quantum mechanical waves and ignoring their phase. The emerging area of "quantum information science" seeks to redress this limitation by exploring the technological possibilities of the more non-intuitive aspects of quantum mechanics, namely quantum coherence and quantum entanglement. A key challenge for quantum information processing is the development of pragmatic scenarios that will allow the exchange of coherent quantum information between disparate parts of a system. This proposal aims to demonstrate such phenomena in heterogeneous systems built from disparate materials whose individual quantum properties are well understood. The ultimate goal is to achieve quantum-coherent communication between physically distinct quantum systems at the single spin level and at room temperature. The proposed research offers advanced technical training in quantum materials and measurement and provides ideal training for future careers in academia and in industry. The PIs will also enhance the diversity and excellence of undergraduate research through institutional programs and by collaboratively teaching a cross-disciplinary undergraduate course on the Practice of Science.