A chiral Maxwell demon

We investigate the role of chirality on the performance of a Maxwell demon
implemented in a quantum Hall bar with a localized impurity. Within a stochastic
thermodynamics description we investigate the ability of such a demon to drive a current
against a bias. We show that the ability of the demon to perform is directly related to
its ability to extract information from the system. The key features of the proposed
Maxwell demon are the topological properties of the quantum Hall system. The asymmetry
of the electronic interactions felt at the localized state when the magnetic field is
reversed joined to the fact that we consider energy dependent (and asymmetric)
tunneling barriers that connect such state with the Hall edge modes allow the
demon to properly work.