论文标题
量子重叠断层扫描的实验演示
Experimental demonstration of Quantum Overlapping Tomography
论文作者
论文摘要
量子断层扫描是由于指数时间复杂性，大规模量子信息研究的主要挑战之一。在这项工作中，我们开发并应用了贝叶斯州估计方法来实验证明量子重叠层析成像[Phys。莱特牧师。 \ textbf {124}，100401（2020）]，该方案旨在表征对数时间复杂性中多体量子系统的关键信息。通过比较完整的状态断层扫描和重叠层析成像的测量结果，我们表明，重叠的层析成像提供了与完整状态断层扫描相比，具有更少的状态测量的系统的准确信息。
Quantum tomography is one of the major challenges of large-scale quantum information research due to the exponential time complexity. In this work, we develop and apply a Bayesian state estimation method to experimentally demonstrate quantum overlapping tomography [Phys. Rev. Lett. \textbf{124}, 100401 (2020)], a scheme intent on characterizing critical information of a many-body quantum system in logarithmic time complexity. By comparing the measurement results of full state tomography and overlapping tomography, we show that overlapping tomography gives accurate information of the system with much fewer state measurements than full state tomography.
