在DNA针中选择地址的光生成自旋比特对
Jacob H Olshansky1, Jinyuan Zhang1, Matthew D Krzyaniak1
1Department of Chemistry and Institute for Sustainability and Energy at Northwestern , Northwestern University , Evanston Illinois 60208-3113 , United States.
Journal of the American Chemical Society
|February 4, 2020
概括
研究人员展示了在DNA中纠的电子自旋量子位的选择性控制. 这些自旋量子比特表现出很长的连贯时间, 允许量子信息处理的潜在量子门操作.
科学领域:
- 量子信息科学
- 分子生物物理学
- 电子自旋共振光谱
背景情况:
- 光诱导的电子转移会产生带有纠的电子旋转的基对,作为潜在的旋转量子位.
- 量子信息应用需要精确地使用选择性微波脉冲来操纵这些自旋量子位.
研究的目的:
- 在不同距离的DNA针中准备和探测光生成的自旋量子位对.
- 证明对内单个自旋量子位的选择性定位.
- 评估量子门操作的连贯时间和潜力.
主要方法:
- 使用染色体修饰的DNA针来托管光生成的自旋量子位对.
- 使用过渡电子磁共振 (EPR) 光谱进行探测.
- 执行脉冲EPR测量用于选择性旋转量子位操纵.
主要成果:
- 在DNA发针中成功准备和探测自旋量子位对.
- 在最短的发针中证明了单个自旋量子位的选择性定位.
- 对自旋量子位对观察到的连贯时间超过4μs.
结论:
- 基于DNA的自旋量子位系统可用于量子信息应用.
- 已证明的选择性定位和长时间连贯性支持复杂的旋转操纵.
- 这些系统显示了实施量子门操作的潜力,例如受控NOT门.
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