论文标题
量子测量中信息与干扰之间的本地权衡
Local trade-off between information and disturbance in quantum measurements
论文作者
论文摘要
这项研究证实了量子测量中信息与干扰之间的局部权衡。当测量略微修改时，这两个数量的变化之间的相关性表示。相关性表明，在修改测量以增加所获得的信息时，在大多数情况下，干扰也会增加。但是，由于相关性不一定是完美的，因此可以在减少干扰的同时增加信息。对于具有不完美相关性的测量值，本文讨论了一种一般方案，该方案在减少干扰的同时增加了信息量。
This study confirms a local trade-off between information and disturbance in quantum measurements. It is represented by the correlation between the changes in these two quantities when the measurement is slightly modified. The correlation indicates that when the measurement is modified to increase the obtained information, the disturbance also increases in most cases. However, the information can be increased while decreasing the disturbance because the correlation is not necessarily perfect. For measurements having imperfect correlations, this paper discusses a general scheme that raises the amount of information while decreasing the disturbance.
