Characterization of intensity correlation via single-photon detection in quantum key distribution Article Swipe
Tianyi Xing
,
Junxuan Liu
,
Likang Zhang
,
Min-Yan Wang
,
Yuhuai Li
,
Ruiyin Liu
,
Qingquan Peng
,
Dongyang Wang
,
Yaxuan Wang
,
Hongwei Liu
,
Wei Li
,
Yuan Cao
,
Anqi Huang
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1364/oe.532483
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1364/oe.532483
One of the most significant vulnerabilities in the source unit of quantum key distribution (QKD) is the correlation between quantum states after modulation, which shall be characterized and evaluated for its practical security performance. In this work, we propose a methodology to characterize the intensity correlation according to the single-photon detection results in the measurement unit without modifying the configuration of the QKD system. In contrast to the previous research that employs extra classical optical detector to measure the correlation, our method can directly analyse the detection data generated during the raw key exchange, enabling to characterize the feature of correlation in real-time system operation. The basic method is applied to a BB84 QKD system and the characterized correlation decreases the secure key rate shown by the security proof. Furthermore, the method is extended and applied to characterize the correlation from the result of Bell-state measurement, which demonstrates its applicability to a running full-scheme MDI QKD system. This study provides an approach for standard certification of a QKD system.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1364/oe.532483
- OA Status
- gold
- Cited By
- 3
- References
- 46
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4401420516
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
-
https://openalex.org/W4401420516Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.1364/oe.532483Digital Object Identifier
- Title
-
Characterization of intensity correlation via single-photon detection in quantum key distributionWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2024Year of publication
- Publication date
-
2024-08-08Full publication date if available
- Authors
-
Tianyi Xing, Junxuan Liu, Likang Zhang, Min-Yan Wang, Yuhuai Li, Ruiyin Liu, Qingquan Peng, Dongyang Wang, Yaxuan Wang, Hongwei Liu, Wei Li, Yuan Cao, Anqi HuangList of authors in order
- Landing page
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https://doi.org/10.1364/oe.532483Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://doi.org/10.1364/oe.532483Direct OA link when available
- Concepts
-
Quantum key distribution, BB84, Computer science, Detector, Quantum cryptography, Photon counting, Optics, Coherent states, Key (lock), Photon, Electronic engineering, Correlation, Physics, Real-time computing, Quantum, Quantum information, Quantum mechanics, Mathematics, Engineering, Geometry, Computer securityTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
3Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 2, 2024: 1Per-year citation counts (last 5 years)
- References (count)
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46Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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