Max Planck光学研究所的研究团队取得重大突破，首次让表面附着的分子达到量子光学相干性的基本极限——傅里叶极限。1该研究成果已发表在《Science》期刊2026年第392卷第6805期第1384页。1
团队开发了一种新颖的清洁方法，利用晶体的升华特性在室温下自然蒸发去除表面污染物，随后将表面冷却至绝对零度上方仅数开尔文的极低温度。1在这种超洁净且稳定的环境中，单个分子能够在物理允许的最长时间内保持其量子特性。1这首次证实了在极其洁净稳定的条件下，分子可将相干时间保持在理论极限。1
研究负责人Vahid Sandoghdar教授表示："我们的未来工作将专注于将这一方法与原子力显微镜（AFM）和扫描隧道显微镜（STM）结合，获得对单个量子发射器的纳米级控制。"1这一成果为量子技术的发展和分子尺度的精密控制开辟了新的可能性。1
Researchers at the Max Planck Institute for the Science of Light have achieved a fundamental breakthrough in quantum optics by enabling molecules attached to a surface to reach the Fourier limit—the basic physical boundary of quantum coherence.1 The team developed a novel cleaning method that exploits the sublimation properties of crystals to create an ultra-pristine surface at extremely low temperatures, allowing individual molecules to maintain their quantum properties for the maximum physically permissible duration.1 This accomplishment, published in Science in 2026 (Volume 392, Issue 6805, page 1384), represents the first experimental demonstration that molecules can sustain coherence times at their theoretical limits within sufficiently clean and stable environments.1
The breakthrough hinges on a sophisticated surface preparation technique in which crystals naturally evaporate through sublimation at room temperature to remove surface contaminants, followed by cooling to just a few kelvin above absolute zero.1 According to Professor Vahid Sandoghdar, "our future work will focus on combining this method with atomic force microscopy (AFM) and scanning tunneling microscopy (STM) to achieve nanometer-scale control over individual quantum emitters."1 The findings underscore how interactions between a surface and attached molecules influence their spatial orientation, energy levels, and potentially their shape and vibrational modes, opening new pathways for quantum technology development and molecular-scale manipulation.1
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