Towards a Room-Temperature Spin Quantum Bus in Diamond via Electron Photoionization, Transport, and Capture
Towards a Room-Temperature Spin Quantum Bus in Diamond via Electron Photoionization, Transport, and Capture
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DOI：
10.1103/physrevx.6.041035
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发表时间：
2016-11-18
影响因子：
12.5
通讯作者：
Manson, N. B.
中科院分区：
文献类型：
--
作者：
Doherty, M. W.;Meriles, C. A.;Manson, N. B.
Diamond 是经过验证的基于自旋量子技术的固态平台。金刚石中的氮空位中心已被用来实现环境条件下的小规模量子信息处理和量子传感。金刚石大规模量子信息处理发展的一个主要障碍是室温下通过量子总线连接氮空位自旋寄存器。鉴于金刚石有望成为理想的自旋传输材料，自旋寄存器之间直接的自旋相干传输提供了一个潜在的解决方案。然而，由于通过传统方法难以实现自旋注入和检测，金刚石中的自旋输运尚未得到证实。在这里，我们利用对金刚石顺磁缺陷的详细了解来确定在室温下光离子化、传输和捕获金刚石中自旋极化电子的新机制。确定了这些机制后，我们探索如何将它们组合起来以实现片上自旋量子总线。
Diamond is a proven solid-state platform for spin-based quantum technology. The nitrogen-vacancy center in diamond has been used to realize small-scale quantum information processing and quantum sensing under ambient conditions. A major barrier in the development of large-scale quantum information processing in diamond is the connection of nitrogen-vacancy spin registers by a quantum bus at room temperature. Given that diamond is expected to be an ideal spin transport material, the coherent transport of spin directly between the spin registers offers a potential solution. Yet, there has been no demonstration of spin transport in diamond due to difficulties in achieving spin injection and detection via conventional methods. Here, we exploit detailed knowledge of the paramagnetic defects in diamond to identify novel mechanisms to photoionize, transport, and capture spin-polarized electrons in diamond at room temperature. Having identified these mechanisms, we explore how they may be combined to realize an on-chip spin quantum bus.