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arXiv · 2512.07589

On-Demand Microwave Single-Photon Source Based on Tantalum Thin Film

Ying Hu·Sheng-Yong Li·En-Qi Chen·Jing Zhang·Yu-xi Liu·Jia-Gui Feng·Zhihui Peng
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Abstract

Single-photon sources are crucial for quantum information technologies. Here, we demonstrate a microwave single-photon source fabricated using a tantalum-based thin film, whose favorable material properties enable high-quality and stable photon emission. The antibunching behavior of the emitted radiation is revealed by second-order correlation measurements. Furthermore, traveling-wave parametric amplifiers are used as the pre-amplifier in the detection chains, we substantially improve the signal-to-noise ratio and thereby greatly reduce the acquisition time required for second-order correlation measurements. These results demonstrate the viability of tantalum-based superconducting devices as reliable platforms for microwave quantum photonics.

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Ying Hu, Sheng-Yong Li, En-Qi Chen, Jing Zhang, Yu-xi Liu, Jia-Gui Feng, Zhihui Peng. 2025-12-08. On-Demand Microwave Single-Photon Source Based on Tantalum Thin Film. https://doi.org/10.1063/5.0316437

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