标题： 通过相干运动检测束缚离子状态 显示英文标题

标题： Trapped-Ion State Detection through Coherent Motion

摘要： 我们展示了一种用于捕获离子状态检测的通用方法，该方法可应用于一大类原子和分子种类。 我们将一个“光谱”离子（Al+）与同一陷阱中的“控制”离子（Mg+）耦合，并通过非共振激光激发光谱离子诱导相干运动来进行状态检测。 运动振幅取决于光谱离子的状态，可通过时间分辨光子计数或在控制离子上的分辨边带激发来测量。 第一种方法提供了一种简化的方法来区分Al+中的“钟”态，避免了基态冷却和边带跃迁。 第二种方法减少了光谱离子上的自发辐射和光学抽运，我们通过非破坏性地区分Al+的1S0基态中的Zeeman亚能级来证明这一点。 显示英文摘要

摘要： We demonstrate a general method for state detection of trapped ions that can be applied to a large class of atomic and molecular species. We couple a "spectroscopy" ion (Al+) to a "control" ion (Mg+) in the same trap and perform state detection through off-resonant laser excitation of the spectroscopy ion that induces coherent motion. The motional amplitude, dependent on the spectroscopy ion state, is measured either by time-resolved photon counting, or by resolved sideband excitations on the control ion. The first method provides a simplified way to distinguish "clock" states in Al+, which avoids ground state cooling and sideband transitions. The second method reduces spontaneous emission and optical pumping on the spectroscopy ion, which we demonstrate by nondestructively distinguishing Zeeman sublevels in the 1S0 ground state of Al+.