一维开放量子系统中噪声参数的确定
Determination of the noise parameters in a one-dimensional open quantum system
摘要：
我们考虑一个电子与自旋为1/2的杂质磁相互作用，嵌入在一个外部环境中，其噪声项只作用于杂质的自旋，我们发现的唯象噪声参数的电子传输和反射概率的表达式。此外，我们给出了一个简单的例子，完全积极的物理相容性的必要性，表明一个积极的，但不是完全积极的耗散映射可以导致负的传输概率。
英文摘要：
We consider an electron magnetically interacting with a spin-1/2 impurity, embedded in an external environment whose noisy term acts only on the impurity's spin, and we find expressions for the electron transmission and reflection probabilities in terms of the phenomenological noise parameters. Moreover, we give a simple example of the necessity of complete positivity for physical consistency, showing that a positive but not completely positive dissipative map can lead to negative transmission probabilities.
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