 After postdoctoral stays in Zurich and at the University of Illinois in Urbana, where he worked with Anthony Leggett, he worked as a research scientist at the IBM T. J. Watson Research Center in Yorktown Heights.In 1993 he became professor at the Simon Fraser University in Vancouver, Canada and since 1996 he is full professor at the University of Basel.Loss' research concerns the quantum theory of condensed-matter- and solid-state physics.