Quantum discord quantifies quantum correlation between quantum systems, which
has potential application in quantum information processing. In this paper, we
propose a scheme realizing the remote transfer of Gaussian quantum discord, in
which another quantum discordant state or an Einstein-Podolsky-Rosen entangled
state serves as ancillary state. The calculation shows that two independent
optical modes that without direct interaction become quantum correlated after
the transfer. The output Gaussian quantum discord can be higher than the
initial Gaussian quantum discord when optimal gain of the classical channel and
the ancillary state are chosen. The physical reason for this result comes from
the fact that the quantum discord of an asymmetric Gaussian quantum discordant
state can be higher than that of a symmetric one. The presented scheme has
potential application in quantum information network
