  We study Cooper pair transport through a quantum point contact between a
superconductor and a quantum Hall edge state at integer and fractional filling
factors. We calculate the tunnelling current and its finite-frequency noise to
the leading order in the tunneling amplitude for dc and ac bias voltage in the
limit of low temperatures. At zero temperature and in case of tunnelling into a
single edge channel both the conductance and differential shot noise vanish as
a result of Pauli exclusion principle. In contrast, in the presence of two edge
channels, this Pauli blockade is softened and a non-zero conductance and shot
noise are revealed.

Mesoscale and Nanoscale Physics