The Institute of Physical and Chemical Research, RIKEN, Saitama, Japan.
Phys Rev Lett. 2010 Oct 22;105(17):176801. doi: 10.1103/PhysRevLett.105.176801. Epub 2010 Oct 18.
We consider the question of how to distinguish quantum from classical transport through nanostructures. To address this issue we have derived two inequalities for temporal correlations in nonequilibrium transport in nanostructures weakly coupled to leads. The first inequality concerns local charge measurements and is of general validity; the second concerns the current flow through the device and is relevant for double quantum dots. Violation of either of these inequalities indicates that physics beyond that of a classical Markovian model is occurring in the nanostructure.
我们考虑如何通过纳米结构来区分量子和经典输运。为了解决这个问题，我们推导出了两个关于弱耦合到引线的纳米结构中非平衡输运的时间相关的不等式。第一个不等式与局部电荷测量有关，具有普遍的有效性；第二个不等式与通过器件的电流有关，与双量子点有关。违反这两个不等式中的任何一个都表明，在纳米结构中发生了超越经典马尔可夫模型的物理现象。
