Imperfections in Which-Way and Eraser Experiments
Pedro Sancho · Physica Scripta · 2002
We analyze the influence of imperfections on which-way and eraser experiments. We study how to modify the mathematical definition of distinguishability to account for the nonideal correlations between the incident particle and the which-way device. On the other hand, we show that the quantum eraser scheme here considered is insensitive to the detection inefficiencies, but can be invalidated by large values of background counts.