论文标题
通过重建原子多体量子状态的数字检测器的断层扫描
Tomography of a number-resolving detector by reconstruction of an atomic many-body quantum state
论文作者
论文摘要
对无法区分原子的多体量子状态的高保真分析需要原子的准确计数。在这里，我们报告了一个原子数分辨探测器的层析成像重建。层析成像是通过超电池rubidium集合进行的，该集合通过在两个高精细时钟水平之间驾驶RABI耦合，以连贯的自旋状态制备。耦合之后是在一个级别上计数职业编号。我们表征了检测器的保真度，并表明具有负值的Wigner函数与之相关。我们的结果为纠缠状态的高保真重建提供了令人兴奋的观点，可以将其用于未来的海森伯格限制原子干涉法。
The high-fidelity analysis of many-body quantum states of indistinguishable atoms requires the accurate counting of atoms. Here we report the tomographic reconstruction of an atom-number-resolving detector. The tomography is performed with an ultracold rubidium ensemble that is prepared in a coherent spin state by driving a Rabi coupling between the two hyperfine clock levels. The coupling is followed by counting the occupation number in one level. We characterize the fidelity of our detector and show that a negative-valued Wigner function is associated with it. Our results offer an exciting perspective for the high-fidelity reconstruction of entangled states and can be applied for a future demonstration of Heisenberg-limited atom interferometry.
