Integrated photonic quantum memories are essential components for scalable quantum networks and photonic information processors. However, prior implementations have been confined to single-channel operation, limiting their capacity to manipulate multiple photonic pulses and support high-dimensional information. In this work, we introduce an 11-channel integrated quantum memory based on laser-written waveguide arrays in 151Eu3+:Y2SiO5 crystals. On-chip electrode arrays enable independent control over the readout times for each channel via Stark-shift-induced atomic interference. Our device achieves random-access quantum storage of three time-bin qubits with a fidelity exceeding 99%, as well as storage of five-dimensional path-encoded quantum states with a fidelity above 96%. This multichannel integrated storage device enables versatile applications through its random access capability and lays a solid foundation for the development of high-dimensional quantum networks in integrated architectures.
@article{arxiv.2508.19605,
title = {Multichannel and high dimensional integrated photonic quantum memory},
author = {Zhong-Wen Ou and Tian-Xiang Zhu and Peng-Jun Liang and Xiao-Min Hu and Zong-Quan Zhou and Chuang-Feng Li and Guang-Can Guo},
journal= {arXiv preprint arXiv:2508.19605},
year = {2025}
}