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arXiv · 2212.13126

Eliminating temporal correlation in quantum-dot entangled photon source by quantum interference

Run-Ze Liu·Yu-Kun Qiao·Han-Sen Zhong·Zhen-Xuan Ge·Hui Wang·Tung-Hsun Chung·Chao-Yang Lu·Yong-Heng Huo·Jian-Wei Pan
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Abstract

Semiconductor quantum dots, as promising solid-state platform, have exhibited deterministic photon pair generation with high polarization entanglement f\textcompwordmark idelity for quantum information applications. However, due to temporal correlation from inherently cascaded emission, photon indistinguishability is limited, which restricts their potential scalability to multi-photon experiments. Here, by utilizing quantum interferences to decouple polarization entanglement from temporal correlation, we improve multi-photon entanglement f\textcompwordmark idelity from $(58.7\pm 2.2)\%$ to $(75.5\pm 2.0)\%$. Our work paves the way to realize scalable and high-quality multi-photon states from quantum dots.

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Run-Ze Liu, Yu-Kun Qiao, Han-Sen Zhong, Zhen-Xuan Ge, Hui Wang, Tung-Hsun Chung, Chao-Yang Lu, Yong-Heng Huo, Jian-Wei Pan. 2022-12-26. Eliminating temporal correlation in quantum-dot entangled photon source by quantum interference. https://doi.org/10.1016/j.scib.2023.03.022

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