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arXiv · 2512.21533

Waveguide-array-based multiplexed photonic interface for atom array

Yuya Maeda·Toshiki Kobayashi·Takuma Ueno·Kentaro Shibata·Shinichi Takenaka·Kazuki Ito·Yuma Fujiwara·Shigehito Miki·Hirotaka Terai·Tsuyoshi Kodama·Hideki Shimoi·Rikizo Ikuta·Makoto Yamashita·Shuta Nakajima·Takashi Yamamoto
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Abstract

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 $\mu$m 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.

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Yuya Maeda, Toshiki Kobayashi, Takuma Ueno, Kentaro Shibata, Shinichi Takenaka, Kazuki Ito, Yuma Fujiwara, Shigehito Miki, Hirotaka Terai, Tsuyoshi Kodama, Hideki Shimoi, Rikizo Ikuta, Makoto Yamashita, Shuta Nakajima, Takashi Yamamoto. 2025-12-25. Waveguide-array-based multiplexed photonic interface for atom array. https://doi.org/10.1364/optica.588749

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