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arXiv · 2609.20172

Rydberg quantum antennas for chip-interfaced single-photon source array

Yan-Lei Zhang·Dong-Qi Ma·Guang-Jie Chen·Qing-Xuan Jie·Liang Chen·Ya-Dong Hu·Zhu-Bo Wang·Guang-Can Guo·Chang-Ling Zou
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Abstract

We propose a Rydberg quantum antenna, consisting of a one-dimensional chain of neutral atoms trapped in a standing-wave optical tweezer, as a chip-interfaced single-photon source. Rydberg blockade induces a single collective excitation in the atomic chain, while its ordered geometry shapes the photon emission into a directional beam, thereby realizing a quantum antenna that emits strictly one photon at a time. Through numerical simulations, we demonstrate single-photon collection efficiencies into a waveguide exceeding 70\% through a high-NA lens with a negligible multiple excitation probability. These performance are robust against probabilistic atom loading in the standing-wave dipole traps, requiring only ten atoms, indicating experimental feasibility. The Rydberg quantum antenna thus offers a unique route toward scalable arrays of high-efficiency, high-purity, and identical single-photon sources interfaced with a photonic chip, addressing key challenges in photonic quantum information technology.

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Yan-Lei Zhang, Dong-Qi Ma, Guang-Jie Chen, Qing-Xuan Jie, Liang Chen, Ya-Dong Hu, Zhu-Bo Wang, Guang-Can Guo, Chang-Ling Zou. 2026-07-23. Rydberg quantum antennas for chip-interfaced single-photon source array. https://arxiv.org/abs/2609.20172

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