Stability of C60 and N@C60 under thermal and optical exposure
Stability of C60 and N@C60 under thermal and optical exposure
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DOI：
10.1016/j.carbon.2015.08.073
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发表时间：
2015-12-01
期刊：
影响因子：
10.9
通讯作者：
Harneit, Wolfgang
中科院分区：
文献类型：
--
作者：
Eckardt, Michael;Wieczorek, Rene;Harneit, Wolfgang
N@C-60是一个包裹在富勒烯壳层中的氮原子，其电子-核自旋系统具有出色的相干性，对量子计算具有吸引力。由于氮原子从C-60笼中热逸，该分子的稳定性受到限制，但对光激发的稳定性知之甚少，光激发是间接方案操纵和读出量子信息的一种可能工具。在这里，我们报告了一项关于N@C-60稳定性的热和光学效应的系统研究结果。中心结果是，当样品保持冷却到一定温度以下时，可以获得强激光照射下的稳定性。此外，还讨论了大气或基质中的分子（如氧、甲苯等）对N@C-60的影响，并对自旋读出实验和N@C-60的分解进行了讨论。确定了该材料光量子态读出的适宜实验条件。(C) 2015 Elsevier Ltd.版权所有。
N@C-60, a nitrogen atom encapsulated in a fullerene shell, has an electron-nuclear spin system with outstanding coherence properties attractive for quantum computation. The stability of this molecule is known to be limited due to thermal escape of the nitrogen atom from the C-60 cage but little is known about the stability towards optical excitation, which is one possible tool for an indirect scheme to manipulate and read out quantum information. Here, we report the results of a systematic study regarding thermal and optical effects on the stability of N@C-60. The central result is that stability under intense laser irradiation can be obtained when the sample remains cooled below a certain temperature. Furthermore, the effect of molecules from the atmosphere or matrix (e.g. oxygen, toluene etc.) on N@C-60 is discussed with respect to spin read-out experiments and the decomposition of N@C-60. As a result, appropriate experimental conditions for optical quantum state read-out of this material are identified. (C) 2015 Elsevier Ltd. All rights reserved.