2026-09-01 大阪大学,科学技術振興機構,情報通信研究機構
図1：開発した多重量子光インターフェースの実験図
＜関連情報＞
- https://qiqb.osaka-u.ac.jp/newstopics/pr20260901
- https://opg.optica.org/optica/fulltext.cfm?uri=optica-13-9-1718
原子アレイ用導波路アレイベースの多重化フォトニックインターフェース Waveguide-array-based multiplexed photonic interface for an 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, and Takashi Yamamoto
Optica Published: August 31, 2026
DOI:https://doi.org/10.1364/OPTICA.588749
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. Remarkably, 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 photon polarization with a visibility of 0.87, we anticipate its applicability to a large-scale multiplexed atom–photon entanglement generation for networking quantum processing units.
