Transportable and long-lived qautnum memory based on Eu:YSO crystals.

References:

量子存储式量子计算机与无噪声光子回波. 物理学报 71, 070305 (2022)

A faithful solid-state spin-wave quantum memory for polarization qubits. Science Bulletin 67, 676 (2022)

Elimination of noise in optically rephased photon echoes. Nature Communications 12, 4378 (2021)

One-hour coherent optical storage in an atomic frequency comb memory. Nature Communications 12, 2381 (2021)