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A double rephasing photon echo is analyzed for inversion-free photonecho-based quantum memories using controlled Rabi flopping, where the Rabiflopping is used for phase control of atom coherence. Unlike therephasing-caused pi-phase shift in a single rephasing scheme, the control Rabiflopping between the excited state and an auxiliary third state inducescoherence inversion. Thus, the absorptive photon echo in a double rephasingscheme can be manipulated to be emissive via the controlled Rabi flopping. Herewe present a quantum coherence control of atom phases in a double rephasingphoton echo scheme for emissive photon echoes for quantum memory applications.

Analysis of controlled Rabi flopping in a double rephasing photon echo scheme for quantum memories