Passive Continuous Variable Quantum Key Distribution through the Oceanic Turbulence
Continuous variable quantum key distribution (CVQKD) can be potentially implemented through seawater channels, whereas the involved oceanic turbulence has a negative effect on the maximal transmission distance of quantum communication systems. Here, we demonstrate the effects of the oceanic turbulen...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-02-01
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| Series: | Entropy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1099-4300/25/2/307 |
| _version_ | 1827757627799502848 |
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| author | Yiwu Zhu Lei Mao Hui Hu Yijun Wang |
| author_facet | Yiwu Zhu Lei Mao Hui Hu Yijun Wang |
| author_sort | Yiwu Zhu |
| collection | DOAJ |
| description | Continuous variable quantum key distribution (CVQKD) can be potentially implemented through seawater channels, whereas the involved oceanic turbulence has a negative effect on the maximal transmission distance of quantum communication systems. Here, we demonstrate the effects of the oceanic turbulence on the performance of the CVQKD system and suggest an implementation feasibility of the passive CVQKD through the oceanic turbulence-based channel. We achieve the channel transmittance characterized by the transmission distance and depth of the seawater. Moreover, a non-Gaussian approach is used for performance improvement while counteracting the effects of excess noises on the oceanic channel. Numerical simulations show that the photon operation (PO) unit can bring reductions of excess noise when taking into account the oceanic turbulence, and hence results in performance improvement in terms of transmission distance and depth as well. The passive CVQKD explores the intrinsic field fluctuations of a thermal source without using an active scheme and hence has a promising application in chip integration for portable quantum communications. |
| first_indexed | 2024-03-11T08:52:10Z |
| format | Article |
| id | doaj.art-bec18ac332ad47e5bdcbb6b33a43f8d1 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-11T08:52:10Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-bec18ac332ad47e5bdcbb6b33a43f8d12023-11-16T20:23:41ZengMDPI AGEntropy1099-43002023-02-0125230710.3390/e25020307Passive Continuous Variable Quantum Key Distribution through the Oceanic TurbulenceYiwu Zhu0Lei Mao1Hui Hu2Yijun Wang3School of Automation, Central South University, Changsha 410083, ChinaSchool of Automation, Central South University, Changsha 410083, ChinaSchool of Automation, Central South University, Changsha 410083, ChinaSchool of Automation, Central South University, Changsha 410083, ChinaContinuous variable quantum key distribution (CVQKD) can be potentially implemented through seawater channels, whereas the involved oceanic turbulence has a negative effect on the maximal transmission distance of quantum communication systems. Here, we demonstrate the effects of the oceanic turbulence on the performance of the CVQKD system and suggest an implementation feasibility of the passive CVQKD through the oceanic turbulence-based channel. We achieve the channel transmittance characterized by the transmission distance and depth of the seawater. Moreover, a non-Gaussian approach is used for performance improvement while counteracting the effects of excess noises on the oceanic channel. Numerical simulations show that the photon operation (PO) unit can bring reductions of excess noise when taking into account the oceanic turbulence, and hence results in performance improvement in terms of transmission distance and depth as well. The passive CVQKD explores the intrinsic field fluctuations of a thermal source without using an active scheme and hence has a promising application in chip integration for portable quantum communications.https://www.mdpi.com/1099-4300/25/2/307quantum key distributionseawater channelquantum communications |
| spellingShingle | Yiwu Zhu Lei Mao Hui Hu Yijun Wang Passive Continuous Variable Quantum Key Distribution through the Oceanic Turbulence Entropy quantum key distribution seawater channel quantum communications |
| title | Passive Continuous Variable Quantum Key Distribution through the Oceanic Turbulence |
| title_full | Passive Continuous Variable Quantum Key Distribution through the Oceanic Turbulence |
| title_fullStr | Passive Continuous Variable Quantum Key Distribution through the Oceanic Turbulence |
| title_full_unstemmed | Passive Continuous Variable Quantum Key Distribution through the Oceanic Turbulence |
| title_short | Passive Continuous Variable Quantum Key Distribution through the Oceanic Turbulence |
| title_sort | passive continuous variable quantum key distribution through the oceanic turbulence |
| topic | quantum key distribution seawater channel quantum communications |
| url | https://www.mdpi.com/1099-4300/25/2/307 |
| work_keys_str_mv | AT yiwuzhu passivecontinuousvariablequantumkeydistributionthroughtheoceanicturbulence AT leimao passivecontinuousvariablequantumkeydistributionthroughtheoceanicturbulence AT huihu passivecontinuousvariablequantumkeydistributionthroughtheoceanicturbulence AT yijunwang passivecontinuousvariablequantumkeydistributionthroughtheoceanicturbulence |