论文标题
测量过程中的量子性衰减：粗粒通道的作用
Decay of quantumness in a measurement process: Action of a coarse-graining channel
论文作者
论文摘要
提出了量子测量过程的模型：由叠加中的量子组成的系统与由N量子态组成的测量设备相互作用。查看对粗粒渠道的作用所给出的设备的出现，有效描述，我们已经能够恢复有关系统叠加系数的信息。我们还能够可视化系统与设备之间的量子相关性的死亡，以及在Amparatus的有效状态下，在某种情况下，量子相关的量子与量子相关性的限制 - 虽然在某种情况下，都可以在某种情况下进行粗略的差异。周围环境。
A model of a quantum measurement process is presented: a system consisting of a qubit in a superposition interacts with a measuring apparatus consisting of a N qubit state. Looking at the emerging, effective description of the apparatus given by the action of a coarse-graining channel, we have been able to recover information about the superposition coefficients of the system.We have also been able to visualize the death of quantum correlations between system and apparatus and the death of quantum coherences in the apparatus' effective state, in the limit of a strong coarse-graining action - a situation akin to decoherence, although it is not necessary to evoke any interaction with the surrounding environment.
