A proposal for detecting spin-entangled electrons using the Berry phase

We are motivated by a setup proposed by J. Carlos Egues et al. (Phys. Rev. Lett., 89 (2002) 176401) to investigate correlations of entangled electron pairs in the presence of two rotating magnetic fields. Using the scattering approach we show that the entangled electron pairs just like a composite particle. The singlet and triplet states show different bunching and anti-bunching behaviors, which can be easily controlled by the magnetic fields. The results can be demonstrated by using a coincident technique. The correlations show up at characteristic output signals for different states.