detection (especially if the interaction between the different subsystems forming the entangled state is switched off).

Despite the large body of knowledge developed in the study of optical systems, new strategies have to be designed to reveal the signatures of non-local correlations in the case of electronic states. For mesoscopic conductors, the prototype scheme was discussed in Ref. [@burkard00]. In this work it has been shown that the presence of spatially separated pairs of entangled electrons, created by some [*entangler*]{}, can be revealed by using a beam splitter and by measuring the correlations of the current fluctuations in the leads. Provided that the electrons injected are in an entangled state bunching and anti-bunching behavior for the cross-correlations of current fluctuations are found depending on whether the state is a spin singlet or a spin triplet. Not only the noise, but the full counting statistics is sensitive to the presence of entanglement in the incoming beam [@taddei02]. The distribution of transmitted electrons is binomial and symmetric with respect to the average number of transmitted charges. Moreover, this is important for the problem studied in the present work, the joint probability for counting electrons at different leads unambiguously characterizes the state of 