  We use contemporary quantum computers to experimentally investigate quantum
steering ofan open quantum system by measurements on its environment. On three
IBMQ processors wedistinguish a qubit as the open system and perform pairwise
interactions with multiple environmentancillas, following a collision model
approach. Different measurement strategies on the ancillaslead to different
state ensembles of the open system, which are reconstructed by employing
statetomography. The amount of steering within the resulting assemblages is
quantified with the help of asemidefinite program. We successfully observe the
presence of quantum steering in our experimentalsimulations, and can
discriminate the different performance qualities and noise levels of the
selectedquantum devices.
