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arXiv · 2408.08452

Integrated photonic Galton board and its application for photon counting

Hezheng Qin·Risheng Cheng·Yiyu Zhou·Hong X. Tang
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Abstract

The Galton board is a desktop probability machine traditionally used to visualize the principles of statistical physics with classical particles. Here, we demonstrate a photonic Galton board that enables on-chip observation of single-photon interference. The photonic Galton board, which can be considered as a simplified Boson sampler, consists of a directional coupler matrix terminated by an array of superconducting nanowire detectors to provide spatiotemporal resolution. This design also allows for photon-number-resolving capability, making it suitable for high-speed photon counting. Our results demonstrate the compatibility between single-photon detector array and photonic integrated circuits, paving the way for implementing on-chip large-scale quantum optics experiments and photonic quantum computing.

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Hezheng Qin, Risheng Cheng, Yiyu Zhou, Hong X. Tang. 2024-08-15. Integrated photonic Galton board and its application for photon counting. https://arxiv.org/abs/2408.08452

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