The growing demand for high-capacity quantum communication and large-scale quantum computing underscores the importance of networking quantum processing units via multiplexed photonic channels. A neutral atom array with multiplexed atom-photon entanglement is a promising platform for its realization. Here, we demonstrate a key multiplexed photonic interface guiding the photons from an atom array to a single-mode waveguide array fabricated on a glass-based photonic integrated circuit. Remarkable 10 channels out of the 32-channel waveguide array with 25 μm pitch couple to photons from 10 sites of the atom array with Rydberg gate-enabled separation. Based on the observed correlation between the atomic states and the polarization of the photon with a visibility of 0.87, we anticipate its applicability to a large-scale multiplexed atom-photon entanglement generation for networking quantum processing units.
@article{arxiv.2512.21533,
title = {Waveguide-array-based multiplexed photonic interface for atom array},
author = {Yuya Maeda and Toshiki Kobayashi and Takuma Ueno and Kentaro Shibata and Shinichi Takenaka and Kazuki Ito and Yuma Fujiwara and Shigehito Miki and Hirotaka Terai and Tsuyoshi Kodama and Hideki Shimoi and Rikizo Ikuta and Makoto Yamashita and Shuta Nakajima and Takashi Yamamoto},
journal= {arXiv preprint arXiv:2512.21533},
year = {2025}
}