  We proposed the general concept of quantum antenna in the strong coupling
regime. It is based on the theory of open quantum systems. The antenna emission
to the space is considered as an interaction with the thermal photonic
reservoir. For modeling of the antenna dynamics is formulated a master equation
with the correspondent Lindblad super-operators as the radiation terms. It is
shown that strong coupling dramatically changes the radiation pattern of
antenna. The total power pattern splits to three partial components; each
corresponds to the spectral line of Mollow triplet. We analyzed the dependence
of splitting from the length of antenna, shift of the phase, and
Rabi-frequency. The predicted effect opens a way for implementation of
multi-beam electrically tunable antennas, potentially useful in different
nano-devices.
