Presentation Information
[11p-E311-4]Development of a vibration isolation stage for a Pr3+:Y2SiO5 quantum memory
〇(M1)Naruki Okamura1, Daisuke Yoshida2,3, Koji Nagano3, Naoyoshi Seshuyama1, Akira Ozawa1,2, Tomoyuki Horikiri1,2 (1.Grad. Sch. Eng., Yokohama Natl. Univ., 2.IMS, Yokohama Natl. Univ., 3.LQUOM Inc.)
Keywords:
Quantum memory,Atomic frequency comb,Vibration isolation
In atomic frequency comb quantum memories using Pr3+:Y2SiO5 crystals, cryostat-induced vibrations cause periodic linewidth broadening via the piezo-spectroscopic effect. To establish a stable experimental environment under cryogenic conditions, we developed a passive vibration isolation stage using an inverted pendulum structure. The mechanical displacement of the isolated platform was evaluated using a Michelson interferometer. Additionally, the spectroscopic stability of the antiholes was analyzed via heterodyne-detected free induction decay measurements. The results demonstrated that a consistent antihole linewidth was maintained on the stage by effectively suppressing periodic broadening synchronized with the cryostat cycle. This stability enables asynchronous write/read operations without strict trigger synchronization. We will also report on the verification of atomic frequency combs with narrower tooth spacing and experiments using weak coherent pulses.