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We experimentally investigate the dynamics of classical and quantumcorrelations of a Bell diagonal state in a non-Markovian dephasing environment.The sudden transition from classical to quantum decoherence regime is observedduring the dynamics of such kind of Bell diagonal state. Due to the refocusingeffect of the overall relative phase, the quantum correlation revives from nearzero and then decays again in the subsequent evolution. However, thenon-Markovian effect is too weak to revive the classical correlation, whichremains constant in the same evolution range. With the implementation of anoptical $\sigma_{x}$ operation, the sudden transition from quantum to classicalrevival regime is obtained and correlation echoes are formed. Our method can beused to control the revival time of correlations, which would be important inquantum memory.

Experimental investigation of the non-Markovian dynamics of classical and quantum correlations