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日期：2016年8月30日 来源：纽约市立大学 摘要：物理学家们成功地展示了金刚石中氮空位色中心之间的电荷传输。
纽约市某学院中以物理学家Carlos Meriles博士为领导中心的研究小组已经成功地证明了金刚石中氮空位色心之间的电荷传输。该团队开发了一种新型的彩色扫描显微镜技术来观察电荷传输。突破性的实验可能会导致金刚石和光学数据存储中的室温量子信息处理的三个维度。 氮空位（NV）中心是金刚石中的光学活性的缺陷，包括氮原子和相邻的空缺，并在金刚石中取代碳原子。此缺陷有电子，是能够存储量子信息。利用这一特殊性质进行量子计算，需要创建一个交互式NV中心网络。迄今为止的研究都集中在使用由NV中心发出的一种特殊的低温环境下创造这种相互作用的光子。 在一个互补的方法中，在与澳大利亚国立大学的研究人员和在堪培拉城市学院合作研究小组（ANU）设想的以电子传输为基础的相互作用，在环境条件下是可以实现的。在其中的一个关键实验报告中聚焦绿色激光束被用来从NV中心去除电子，后来在金刚石中径向扩散。一个红色的激光扫描成像用于呈现NV中心来捕捉这些远致30微米的扩散电荷。团队利用了NV中心发光强度与无电子创建一个地图的捕获载体的差异。 “这是非常可喜的初步结果，”主要作者梅里利斯Harishankar Jayakumar博士说，他是梅里利斯集团博士后研究员。其他的关键参与者是研究团队成员Siddharth Dhomkar博士和研究生Jacob Henshaw，以及Marcus Doherty博士和在澳大利亚国立大学的Neil Manson教授。 在自然传播杂志的文章中有一篇还详细讨论了通过这种技术发现了电荷载体与金刚石中其他缺陷的相互作用。美国国家科学基金会支持这方面的研究。
文章来源：以上转载的材料由纽约城市大学提供。注：内容可根据风格和长度来编辑。
期刊参考文献：Harishankar Jayakumar，Jacob Henshaw，Siddharth Dhomkar，Daniela Pagliero，Abdelghani Laraoui，Neil B. Manson，Remus Albu，Marcus W. Doherty，Carlos A. Meriles。氮掺杂金刚石中俘获电荷的光学图案。自然通讯，2016；7：12660号：DOL: 10.1038/ncomms12660
原文： Diamonds and quantum information processing on the nano scale
Date:August 30, 2016
Source:The City University of New York
Summary: Physicists have successfully demonstrated charge transport between Nitrogen-Vacancy color centers in diamond.
A City College of New York led-team headed by physicist Dr. Carlos Meriles has successfully demonstrated charge transport between Nitrogen-Vacancy color centers in diamond. The team developed a novel multi-color scanning microscopy technique to visualize the charge transport. The breakthrough experiment could potentially lead to room-temperature quantum information processing in diamond and optical data storage in three dimensions. The nitrogen-vacancy (NV) center is an optically active defect in diamond comprising a nitrogen atom and an adjacent vacancy, replacing carbon atoms in the diamond lattice. This defect has electrons that are capable of storing quantum information. To utilize this special property for quantum computation, it is required to create a network of interacting NV centers. The research so far has focused on using photons emitted by the NV centers to create this interaction under a special low temperature environment. In a complementary approach the research team at City College in collaboration with researchers at the Australian National University (ANU) in Canberra are envisioning an electron-transport-based interaction that is realizable in ambient conditions. In one of the key experiments reported a focused green laser beam was used to remove the electrons from the NV centers, which later diffused radially in the diamond. A red laser scan was used to image NV centers that trapped these diffused charges as far as 30 microns. The team exploited the difference in luminescence intensities of the NV centers with and without the electron to create a map of the trapped carriers. "These are very promising initial results" said lead author Dr. Harishankar Jayakumar, a postdoctoral fellow at the Meriles group. Other key contributors are CCNY team members Dr. Siddharth Dhomkar, and graduate student Jacob Henshaw, as well as Dr. Marcus Doherty and Prof. Neil Manson at ANU. The article appearing in the journal Nature Communicationsalso discusses in detail the complex interactions of the charge carriers with other defects in diamond, uncovered by this technique. The National Science Foundation supported the research.
Story Source:
Journal Reference: - Harishankar Jayakumar, Jacob Henshaw, Siddharth Dhomkar, Daniela Pagliero, Abdelghani Laraoui, Neil B. Manson, Remus Albu, Marcus W. Doherty, Carlos A. Meriles. Optical patterning of trapped charge in nitrogen-doped diamond. Nature Communications, 2016; 7: 12660 DOI: 10.1038/ncomms12660
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发表于 2016-9-1 09:13:28
