一个光蛋白自旋量子位
Jacob S Feder1, Benjamin S Soloway1, Shreya Verma2
1Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA.
Nature
|August 20, 2025
概括
研究人员使用增强的黄色光蛋白开发了一种新的量子位 (量子位). 这种生物量子比特允许光学控制和读取, 展示了活细胞中纳米级传感的潜力.
科学领域:
- 量子信息科学
- 生物物理
- 分子生物学
背景情况:
- 可光学地址的自旋量子比特对于纳米级传感至关重要,主要设计在固态系统中.
- 光蛋白因遗传编码性而被广泛用于体内显微镜,但它们作为量子位的潜力仍然未被探索.
- 光蛋白具有元稳定三重体状态,这是量子位功能的一个关键特征.
研究的目的:
- 在光蛋白中设计和描述可光学定位的自旋量子位.
- 研究使用光蛋白作为量子信息处理平台的可行性.
- 在复杂的生物环境中展示这些生物量子位的功能.
主要方法:
- 在增强的黄色光蛋白中实现可光学定位的自旋量子位.
- 使用近红外激光脉冲来触发三重状态的读数.
- 采用连贯微波控制和卡尔-普尔塞尔-梅布姆-吉尔脱,以在液温度下测量连贯时间.
- 在哺乳动物和细菌细胞中表达量子位以评估体内性能.
主要成果:
- 获得增强的黄色光蛋白旋转量子位的触发读数,旋转对比度高达20%.
- 在液温度下测量了 (16 ± 2) μs的连贯时间.
- 在哺乳动物细胞内证明了持续的量子比特对比和一致的控制.
- 在室温下观察到高达8%对比度的细菌细胞中的光学磁共振.
结论:
- 光蛋白代表了一个创建光学自旋量子位的新而强大的平台.
- 这种生物量子比特技术为生命科学应用开辟了道路,
- 在基因编码的光蛋白中设计量子比特的能力为体内量子应用提供了显著的优势.
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