化学反应的量子逻辑探测
Quantum-Logic Detection of Chemical Reactions
AI总结：
本文提出并演示利用量子逻辑读取辅助逻辑离子运动状态，单次探测超冷铷原子与不可控锶离子间的反应结果及速率，拓展了难冷却离子化学反应研究手段。
摘要：
利用处于明确定义量子态中的单对原子来研究化学反应，是量子化学的基石。然而，能够实现对单个化学反应进行观测和控制的已展示技术屈指可数。在这里，我们提出并展示了一种利用量子逻辑研究超冷中性原子与冷离子之间化学反应的新技术。我们通过实验研究了超冷铷原子与我们无法进行实验控制的单电离锶同位素之间反应中超精细能量的释放。我们通过量子逻辑读取逻辑离子的运动状态，在单次测量中探测反应结果并测量化学离子的反应速率。我们的工作利用现有实验工具，为所有无法直接进行激光冷却和状态探测的原子离子与分子离子开辟了新途径，并扩展了研究化学反应的工具箱。
英文摘要：
Studies of chemical reactions by a single pair of atoms in a well defined quantum state constitute a corner stone in quantum chemistry. Yet, the number of demonstrated techniques which enable observation and control of a single chemical reaction is handful. Here we propose and demonstrate a new technique to study chemical reactions between an ultracold neutral atom and a cold ion using quantum logic. We experimentally study the release of hyperfine energy in a reaction between an ultracold rubidium atom and isotopes of singly ionized strontium for which we do not have experimental control. We detect the reaction outcome and measure the reaction rate of the chemistry ion by reading the motional state of a logic ion via quantum logic, in a single shot. Our work opens new avenues and extends the toolbox of studying chemical reactions, with existing experimental tools, for all atomic and molecular ions in which direct laser cooling and state detection are unavailable.
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