标题： 广义部分测量 显示英文标题

标题： Generalized partial measurements

摘要： 我们引入了一种测量类型，这种测量广义地推广了近年来使用相位量子比特进行的所谓“部分测量”。 虽然在部分测量的情况下已经证明，只能对非切换事件撤销测量的影响，但我们在此表明，广义的部分测量可以以概率方式对切换和非切换事件进行逆转。 我们计算了相关的费舍尔信息，并讨论了量子态层析成像的估计灵敏度。 提出了两种用超导量子比特实现这种测量的方法。 显示英文摘要

摘要： We introduce a type of measurements that generalize the so-called "partial measurements" performed in recent years with phase qubits. While in the case of partial measurements it has been demonstrated that one could undo the effect of the measurement only for non-switching events, we show here that generalized partial measurements can be reversed probabilistically for both switching and non-switching events. We calculate the associated Fisher information and discuss the estimation sensitivity for quantum tomography. Two ways of implementing this type of measurements with superconducting qubits are proposed.