Quantum sensing at the atomic scale has proved challenging. Now, a quantum sensor comprising a molecular spin, which can be addressed by electron spin resonance, attached to the tip of a scanning tunnelling microscope enables the measurement of weak electric and magnetic fields with sub-ångstrom spatial resolution.

中文翻译：

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扫描探针尖端上的分子自旋可实现原子级的量子传感


事实证明，原子尺度的量子传感具有挑战性。现在，一个由分子自旋组成的量子传感器（可以通过电子自旋共振进行寻址）连接到扫描隧道显微镜的尖端，能够以亚奥恩斯特罗姆空间分辨率测量微弱的电场和磁场。