In this Lecture I will discuss open driven-dissipative polaritonic systems aimed at  optical information processing.  Novel physical mechanism based on permanent Rabi oscillations for the creation of long-lived macroscopic exciton-photon

qubits in semiconductor microcavities with embedded quantum wells is proposed and discussed in details. We argue that the coherence time of Rabi oscillations can be dramatically enhanced due to their stimulated pumping from a permanent thermal reservoir of polaritons.  We demonstrate that permanent non-decaying oscillations may appear due to the parity-time symmetry of the coupled exciton-photon system realized in a specific regime of pumping to the exciton state and depletion of the reservoir. We discuss applications of such qubits for quantum information processing, cloning, and storage purposes.