  Recent years have brought an explosion of activities in the research of
topological aspects of condensed-matter systems. Topologically non-trivial
phases of matter are typically accompanied by protected surface states or
exotic degenerate excitations such as Majorana end states or Haldane's
localized spinons. Topologically protected degeneracies can, however, also
appear in the bulk. An intriguing example is provided by Weyl semimetals, where
topologically protected electronic band degeneracies and exotic surface states
emerge even in the absence of interactions. Here we demonstrate experimentally
and theoretically that Weyl degeneracies appear naturally in an interacting
quantum dot system, for specific values of the external magnetic field. These
magnetic Weyl points are robust against spin-orbit coupling unavoidably present
in most quantum dot devices. Our transport experiments through an InAs double
dot device placed in magnetic field reveal the presence of a pair of Weyl
points, exhibiting a robust ground state degeneracy and a corresponding
protected Kondo effect.
