Frankfurt 2006 – scientific programme

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Q: Quantenoptik und Photonik

Q 75: Poster Quanteninformation

Q 75.15: Poster

Thursday, March 16, 2006, 16:30–18:30, Labsaal

Spin entanglement produced from elastic scattering of unpolarized electrons — •Rustam Berezov, Sebastian Böttger, and Joachim Jacoby — Inst. f. Ang. Phys., Max von Laue-Str. 1, JWG-Univ. Frankfurt/Main

A Moeller scattering experiment is set up where a beam of unpolarized electrons is scattered quasi elastically from a target. In this case entanglement appears if the two particles are indistinguishable. For identical fermions the scattering cross-section to 90^∘ in the center of mass system is forbidden, whereas for identical bosons the scattering cross-section at that angle is twice as big as the one for distinguishable particles. Therefore scattering of electrons to 90^∘ is only permitted for distinguishable electrons, where the spin orientation for both scattered electrons is anti-correlated. A new design of a spin detector is proposed to detect the spin of the electrons.