Speaker: F Fillaux (pdf slides 1.2 Mb)

Abstract: Macroscopic quantum entanglement at the scale and temperature of our everyday world enlighten the foundations of quantum mechanics and reveals unforeseen mechanisms for proton transfer across hydrogen bonds. Recent experiments on hydrogen bonded crystals conducted at advanced neutron sources reveal macroscopic quantum entanglement of the sublattice of protons. Macroscopic wave functions extend over the whole crystal. Quantum interference arising from quantum correlation in 1D (double-slits), 2D (gratting) and 3D (lattice) are presented. The nonlocal nature of proton transfer dynamics is emphasized.

NLDD05, Nonlinear excitations: theory and experiments, Sevilla, March 3-4, 2005.