Correlations of spin-polarized and entangled electrons with Berry phase

Details Correlations of spin-polarized and entangled electrons with Berry phase Correlations of spin-polarized and entangled electrons with Berry phase

2005-09-06

arxiv.org/abs/cond-mat/0509131v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 12 figures, 3 tables

Scientific paper

The correlation and fluctuation of both entangled electrons and spin-polarized pairs affected by two rotating magnetic fields in a setup proposed by J. Carlos Egues etc. (Phys. Rev. Lett. {\bf 89}(2002) 176401) are studied theoretically by using scattering approach. Differing from polarized pair, the entangled electron pairs are shown to behave like a composite particle with the total spins and its $z$ components. The singlet and triplet states exhibit different bunching and antibunching features, which can be easily adjusted by the magnetic fields. The correlations and variances can show up distinguish output signals for the four incident states. Our results are expected to be tested by using coincident technique.

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