Multi-mode quantum memory is a basic element required for long-distance quantum communication, as well as scalable quantum computation. For on-demand readout and long storage times, control pulses are crucial in order to transfer atomic excitations back and forth into spin excitations. Here, we introduce noise-robust composite pulse sequences for high-fidelity excitation transfer in multi-mode quantum memory. These pulses are robust to the deviations in amplitude and the detuning parameters of realistic conditions. We show the efficiency of these composite pulses with a typical rare-earth ion-doped system. This approach could be applied to a variety of quantum memory schemes.

多模量子存储器是长距离量子通信以及可扩展量子计算所需的基本元件。对于按需读出和长存储时间，控制脉冲对于将原子激发来回转换为自旋激发至关重要。在这里，我们为多模量子存储器中的高保真激发转移引入了抗噪声复合脉冲序列。这些脉冲对幅度偏差和现实条件的失谐参数具有鲁棒性。我们用典型的稀土离子掺杂系统展示了这些复合脉冲的效率。这种方法可以应用于各种量子存储方案。