论文标题
保利转移矩阵直接重建：频道表征没有完整的过程断层扫描
Pauli transfer matrix direct reconstruction: channel characterization without full process tomography
论文作者
论文摘要
我们提出了用于表征多Quantum量子通道的层析成像协议。我们讨论了一类特定的输入状态，在该状态下，通道输出处的Pauli测量集直接与其Pauli Transfer矩阵组件有关。我们将我们的结果与标准量子过程断层扫描的结果进行了比较，显示了单个矩阵元素提取所需的不同实验配置的数量，同时保持相同数量的拍摄。每当需要对Pauli转移矩阵的选择性知识时，这为更有效的实验实现铺平了道路。我们提供了几个示例和模拟。
We present a tomographic protocol for the characterization of multiqubit quantum channels. We discuss a specific class of input states, for which the set of Pauli measurements at the output of the channel directly relates to its Pauli transfer matrix components. We compare our results to those of standard quantum process tomography, showing an exponential reduction in the number of different experimental configurations required by a single matrix element extraction, while keeping the same number of shots. This paves the way for more efficient experimental implementations, whenever a selective knowledge of the Pauli transfer matrix is needed. We provide several examples and simulations.
