论文标题
在IBM量子计算机上测量引起的量子步行
Measurement induced quantum walks on an IBM Quantum Computer
论文作者
论文摘要
我们研究一个单个粒子的量子步行，该粒子受到两个位点的图表的频道射击测量。这个两级系统是测量引起的量子步行的最小模型。在IBM量子计算机上计算出平均第一个检测到的过渡时间和返回时间，这是站点和现场电位之间跳跃矩阵元素的函数。实验监测的量子步行揭示了理论上预测的行为，例如对第一个检测到的返回时间的量化以及平均检测到的平均检测到的过渡时间在退化点附近，具有很高的精度。
We study a quantum walk of a single particle that is subject to stroboscopic projective measurements on a graph with two sites. This two-level system is the minimal model of a measurement induced quantum walk. The mean first detected transition and return time are computed on an IBM quantum computer as a function of the hopping matrix element between the sites and the on-site potential. The experimentally monitored quantum walk reveals the theoretically predicted behavior, such as the quantization of the first detected return time and the strong increase of the mean first detected transition time near degenerate points, with high accuracy.
