Visiting professor of Univ. of Innsbruck (collaboration with Zeilinger, Nobel Laureate 2022), many times in the period 1991-1999; visiting professor of the University of Vienna (collaboration with Zeilinger and Brukner), several semesters (2000-2018), Tsinghua Univ., Beijing (2005), USTC Hefei (2011); in Board Member of National Science Centre – NCN (2010-2018); an editor of Phys. Rev. A (2016-2019); in Strategic Advisory Board of EU program QUANT-ERA (2017-).
