Berlin 2001 – wissenschaftliches Programm

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Q: Quantenoptik

Q 22: Poster: Quantum Effects

Q 22.7: Poster

Donnerstag, 5. April 2001, 12:30–15:00, AT2

Anomalous neutron Compton scattering from entangled protons of condensed systems — •T. Abdul-Redah and C. A. C.-Dreismann — I. N. Stranski-Institut, TU Berlin, D-10623 Berlin

We present experimental neutron Compton scattering (NCS) results on (1) various metallic hydrides [1] (niobium and palladium hydrides); (2) solid polystyrene [2] and partially deuterated polystyrene; (3) liquid benzene. The NCS experiments reveal that the measured total cross-section density of the protons in these systems is reduced by about 25%. The characteristic scattering time of the NCS experiment is about 0.1 - 1.0 femtoseconds. These striking results provide direct experimental evidence for short-lived quantum entanglement between protons at T=295.

[1] E. B. Karlsson et al. Europhys. Lett. 46, 617 (1999). [2] C. A. C.-Dreismann et al., J. Chem. Phys. 113, 2784 (2000).