The quantum wavepacketinterference in rare earth ions is observed with dual-channel correlation spectroscopictechnique using a femtosecond laser. The measured dephasing time of Eu3+ ionsin Y2O3:Eu3+ at room temperature is longer than 3 picoseconds,and the quantum wavepacket interference is recorded in the free-induction decay process ofEu3+ ions. Some systematic errors in the experiments are discussed and thesolutions are suggested. Experimental skills are reported.