Long-distance transmission of quantum key distribution coexisting with classical optical communication over a weakly-coupled few-mode fiber
Quantum key distribution (QKD) is one of the most practical applications in quantum information processing, which can generate information-theoretical secure keys between remote parties. With the help of the wavelength-division multiplexing technique, QKD has been integrated with the classical optical communication networks. The wavelength-division multiplexing can be further improved by the mode-wavelength dual multiplexing technique with few-mode fiber (FMF), which has additional modal isolation and large effective core area of mode, and particularly is practical in fabrication and splicing technology compared with the multi-core fiber. Here, we present for the first time a QKD implementation coexisting with classical optical communication over weakly-coupled FMF using all-fiber mode-selective couplers. The co-propagation of QKD with one 100 Gbps classical data channel at -2.60 dBm launched power is achieved over 86 km FMF with 1.3 kbps real-time secure key generation. Compared with single-mode fiber using wavelength-division multiplexing, given the same fiber-input power, the Raman noise in FMF using the mode-wavelength dual multiplexing is reduced by 86% in average. Our work implements an important approach to the integration between QKD and classical optical communication and previews the compatibility of quantum communications with the next-generation mode division multiplexing networks.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:28 |
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| Enthalten in: |
Optics express - 28(2020), 9 vom: 27. Apr., Seite 12558-12565 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wang, Bi-Xiao [VerfasserIn] |
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| Links: |
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| Themen: |
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| Anmerkungen: |
Date Revised 14.05.2020 published: Print Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1364/OE.388857 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM309867177 |
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| 520 | |a Quantum key distribution (QKD) is one of the most practical applications in quantum information processing, which can generate information-theoretical secure keys between remote parties. With the help of the wavelength-division multiplexing technique, QKD has been integrated with the classical optical communication networks. The wavelength-division multiplexing can be further improved by the mode-wavelength dual multiplexing technique with few-mode fiber (FMF), which has additional modal isolation and large effective core area of mode, and particularly is practical in fabrication and splicing technology compared with the multi-core fiber. Here, we present for the first time a QKD implementation coexisting with classical optical communication over weakly-coupled FMF using all-fiber mode-selective couplers. The co-propagation of QKD with one 100 Gbps classical data channel at -2.60 dBm launched power is achieved over 86 km FMF with 1.3 kbps real-time secure key generation. Compared with single-mode fiber using wavelength-division multiplexing, given the same fiber-input power, the Raman noise in FMF using the mode-wavelength dual multiplexing is reduced by 86% in average. Our work implements an important approach to the integration between QKD and classical optical communication and previews the compatibility of quantum communications with the next-generation mode division multiplexing networks | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Mao, Yingqiu |e verfasserin |4 aut | |
| 700 | 1 | |a Shen, Lei |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Lei |e verfasserin |4 aut | |
| 700 | 1 | |a Lan, Xiao-Bo |e verfasserin |4 aut | |
| 700 | 1 | |a Ge, Dawei |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Yuyang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Juhao |e verfasserin |4 aut | |
| 700 | 1 | |a Tang, Yan-Lin |e verfasserin |4 aut | |
| 700 | 1 | |a Tang, Shi-Biao |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Jun |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Teng-Yun |e verfasserin |4 aut | |
| 700 | 1 | |a Pan, Jian-Wei |e verfasserin |4 aut | |
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