[18a-S4_203-1~7] 3.9 Optical quantum physics and technologies

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[18a-S4_203-5] Optimization of dynamical decoupling sequences in Rare-earth-doped quantum memory

〇(M1)Kota Sasaki¹, Yudai Nodaguchi², Daisuke Yoshida^3,4, Feng-Lei Hong^2,3, Akira Ozawa^2,3, Tomoyuki Horikiri^2,3,4 (1.IFGS, Yokohama Natl. Univ., 2.Grad. Sch. Eng., Yokohama Natl. Univ., 3.IMS, Yokohama Natl. Univ., 4.LQUOM Inc.)

Keywords:

quantum memory,rare-earth-ion-doped crystal

To achieve long storage times in atomic frequency comb quantum memories based on rare-earth-ion-doped crystals, we apply dynamical decoupling (DD). Enhancing the performance of DD requires shortening the pulse spacing and increasing the number of pulses; however, repeatedly applying operations about the same rotation axis on the Bloch sphere leads to the accumulation of pulse errors and a reduction in efficiency. In this work, we introduce an XY sequence employing orthogonal rotation axes and successfully extend the storage time.