论文标题
量子计量学的连续变量图状态
Continuous-variable graph states for quantum metrology
论文作者
论文摘要
图状态是用于量子信息处理的独特资源，例如基于测量的量子计算。在这里，我们从理论上使用连续变量图状态进行单参数量子计量学，包括相位和位移传感。我们确定了两种感应方式的最佳图状态，并表明可以通过局部同源测量来实现相位和位移感测精度的Heisenberg缩放。
Graph states are a unique resource for quantum information processing, such as measurement-based quantum computation. Here, we theoretically investigate using continuous-variable graph states for single-parameter quantum metrology, including both phase and displacement sensing. We identified the optimal graph states for the two sensing modalities and showed that Heisenberg scaling of the accuracy for both phase and displacement sensing can be achieved with local homodyne measurements.
