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

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 indis...

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Bibliographic Details
Published in:arXiv.org 2022-12
Main Authors: Liu, Run-Ze, Yu-Kun, Qiao, Han-Sen, Zhong, Zhen-Xuan Ge, Wang, Hui, Chung, Tung-Hsun, Chao-Yang, Lu, Yong-Heng Huo, Jian-Wei, Pan
Format: Article
Language:English
Subjects:
Correlation
Emissions control
Photons
Polarization
Quantum dots
Quantum entanglement
Quantum phenomena
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2212.13126