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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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
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Language:English
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Correlation
Emissions control
Photons
Polarization
Quantum dots
Quantum entanglement
Quantum phenomena
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creator 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
description 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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subjects Correlation
Emissions control
Photons
Polarization
Quantum dots
Quantum entanglement
Quantum phenomena
title Eliminating temporal correlation in quantum-dot entangled photon source by quantum interference
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