Presentation Information
[11p-E311-3]Efficiency improvement of Rare-earth-doped quantum memory via frequency stabilization of the control laser
〇(B)Haruto Miyazaki1, Kota Sasaki2, Naoyoshi Sesyuyama1, Komatsudaira Ryoma1, Koji Nagano4, Daisuke Yoshida3,4, Akira Ozawa1,3, Tomoyuki Horikiri1,3,4 (1.Grad. Sch. Eng., Yokohama Natl. Univ., 2.IFGS, Yokohama Natl. Univ., 3.IMS, Yokohama Natl. Univ., 4.LQUOM Inc.)
Keywords:
quantum memory,rare-earth-ion-doped crystal
To realize long-distance quantum communication, quantum repeaters and quantum memories for synchronizing relay timing are indispensable. Aiming to realize highly efficient quantum memories capable of long-term storage, we utilize an Atomic Frequency Comb prepared in a rare-earth-ion-doped crystal, Pr3+:Y2SiO5. In this study, we report improvements in both efficiency and storage time achieved by replacing the cavity used for laser frequency stabilization with an Ultra Low Expansion cavity, which possesses a finesse approximately 10 times higher than conventional ones.