Berlin 2001 – wissenschaftliches Programm
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Q: Quantenoptik
Q 20: Quantum Effects I
Q 20.6: Vortrag
Mittwoch, 4. April 2001, 17:00–17:15, H 2013
Sub-femtosecond Schrödinger’s cat states of protons in condensed matter: A new effect — •C. A. C.-Dreismann1, T. Abdul-Redah1, E. B. Karlsson2, and J. Mayers3 — 1I. N. Stranski Inst., TU Berlin, D-10623 Berlin — 2Physics Dep., Uppsala Univ., S-75121 Uppsala, Sweden — 3ISIS Facility, RAL, Didcot OX11 0QX, UK
Recently [1] we demonstrated for the first time that quantum entanglement (QE) may be measurable even in condensed matter at room temperature, if a sufficiently fast scattering technique is applied. In the experiments, the neutron Compton scattering (NCS) method was used. We present new NCS results providing direct evidence for sub-femtosecond QE (at T=295 K) between protons in liquid water, solid polymers, and in metal-hydrogen systems. The NCS results reveal the highly surprising effect that the measured total cross-section density of the protons is reduced by up to 30 percent. This new effect appears to be of quite general nature.
[1] C.A. C.-Dreismann et al., Phys. Rev. Lett. 79, 2839 (1997).