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Asynchronous multi-photon interference for quantum networks

delete2026-07-30
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OA
AI
B
Baghdasar Baghdasaryan *
K
Karen Lozano-Méndez
M
Markus Leipe
M
Meritxell Cabrejo-Ponce
S
Sabine Häussler
K
Kaushik Joarder
T
Tim Gühring
S
Stephan Fritzsche
T
Thorsten A. Goebel
R
Ria G. Krämer
S
Stefan Nolte
C
Carlos Andres Melo Luna
Y
Yoshiaki Tsujimoto
F
Fabian Steinlechner *
DOI：10.1038/s41534-026-01333-9delete
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摘要

摘要

En 中文
摘要：先进的量子通信协议要求在远程节点产生的高可见度量子干涉，这对光学同步提出了严格要求。传统上，光波包的同步依赖于脉冲光源和精确的光路稳定。替代方法是采用连续波（CW）光子对源，通过在小于光子相干时间Tc的符合窗口τw内进行后选择检测事件来强制实现光子的时间不可区分性。尽管其概念简单，但相关时间尺度、可实现干涉可见度及可用多光子率之间的定量关系仍不明确。本文详细开发并实验验证了一个定量描述连续波模式下时间分辨多光子干涉的理论框架。该模型明确纳入了探测器定时抖动、光子相干时间和时间后选择。该模型通过四光子HOM干涉测量进行了验证。基于此验证框架，我们确定了能够最大化目标干涉可见度下可用四光子率的符合窗口。最后，我们在等效不可区分性约束下比较了连续波和脉冲自发参量下转换光源，表明连续波操作可在放宽光学同步要求的同时实现可比速率。

期刊

npj Quantum Information 封面图
npj Quantum Information
IF:
8.3
论文数:
1.4K
被引数:
8.1K

机构

N
National Institute of Information and Communications Technology
学者数:
84
论文数: 56
被引数: 869
A
Abbe Center of Photonics
学者数:
33
论文数: 7
被引数: 0
F
friedrich schiller university jena
学者数:
645
论文数: 236
被引数: 0
F
Fraunhofer Institute for Applied Optics and Precision Engineering IOF
学者数:
25
论文数: 9
被引数: 0
学者 查看更多机构
引用论文

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Enhancing the purity of single photons in parametric down-conversion through simultaneous pump-beam and crystal-domain engineering
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