论文标题
超声化学反应的量子计量
Quantum metrology with ultracold chemical reactions
论文作者
论文摘要
已知化学链反应可以使化学，生物学和医学分析中极敏感的检测方案，甚至已用于寻找暗物质。在这里，我们表明，连贯的超声化学反应具有巨大的量子计量潜力：在原子 - 分子的玻色子凝结物（BEC）中，弱的外部扰动可以改变反应动力学，并导致在原子型机制中与现代化的原子型制度中分子的相干创造。这有望实质上提高先前提出的基于BEC的传感器来加速，重力波和其他物理量（包括检测暗物质）的生存能力，这些传感器依赖于检测到由单个声子产生引起的微小密度调制。
Chemical chain reactions are known to enable extremely sensitive detection schemes in chemical, biological, and medical analysis, and have even been used in the search for dark matter. Here we show that coherent, ultracold chemical reactions harbor great potential for quantum metrology: In an atom-molecule Bose-Einstein condensate (BEC), a weak external perturbation can modify the reaction dynamics and lead to the coherent creation of molecules in an atom-dominant regime which can be selectively detected with modern spectroscopic techniques. This promises to substantially improve the viability of previously proposed BEC-based sensors for acceleration, gravitational waves, and other physical quantities, including the detection of dark matter, that so far relied on the detection of the tiny density modulations caused by the creation of single phonons.
