Suppressing excess noise for atmospheric continuous-variable quantum key distribution via adaptive optics approach
The excess noise inducing in the process of the quantum communication procedure is the major obstacle restricting the performance of continuous-variable quantum key distribution (CVQKD). In order to effectively suppress the excess noise through correcting the propagation-induced distortions on the q...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/abb47c |
| _version_ | 1797750345549479936 |
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| author | Geng Chai Peng Huang Zhengwen Cao Guihua Zeng |
| author_facet | Geng Chai Peng Huang Zhengwen Cao Guihua Zeng |
| author_sort | Geng Chai |
| collection | DOAJ |
| description | The excess noise inducing in the process of the quantum communication procedure is the major obstacle restricting the performance of continuous-variable quantum key distribution (CVQKD). In order to effectively suppress the excess noise through correcting the propagation-induced distortions on the quality of the propagated quantum signal, we propose a general scheme of suppressing excess noise for CVQKD via adaptive optics (AO) approach. The analysis shows that phase-only AO compensation exhibits excellent performance in controlling the excess noise, which is embodied in substantially extending the secure propagation distance and improving the secret key rate of the system. And thereby the development and improvement of AO has the potential advantage to break the distance constraints due to the excess noise results from propagation-dominated factors. Our scheme provides a feasible method for further implementation of practical large-scale CVQKD. |
| first_indexed | 2024-03-12T16:31:26Z |
| format | Article |
| id | doaj.art-587f0584fb3543a9b2923b5e559ac14e |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:31:26Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-587f0584fb3543a9b2923b5e559ac14e2023-08-08T15:27:30ZengIOP PublishingNew Journal of Physics1367-26302020-01-01221010300910.1088/1367-2630/abb47cSuppressing excess noise for atmospheric continuous-variable quantum key distribution via adaptive optics approachGeng Chai0https://orcid.org/0000-0002-9805-5020Peng Huang1https://orcid.org/0000-0003-1449-1499Zhengwen Cao2Guihua Zeng3School of Information Science and Technology, Northwest University , Xi’an 710127, People’s Republic of ChinaState Key Laboratory of Advanced Optical Communication Systems and Networks, and Center of Quantum Sensing and Information Processing (QSIP), Shanghai Jiao Tong University , Shanghai 200240, People’s Republic of ChinaSchool of Information Science and Technology, Northwest University , Xi’an 710127, People’s Republic of ChinaSchool of Information Science and Technology, Northwest University , Xi’an 710127, People’s Republic of China; State Key Laboratory of Advanced Optical Communication Systems and Networks, and Center of Quantum Sensing and Information Processing (QSIP), Shanghai Jiao Tong University , Shanghai 200240, People’s Republic of ChinaThe excess noise inducing in the process of the quantum communication procedure is the major obstacle restricting the performance of continuous-variable quantum key distribution (CVQKD). In order to effectively suppress the excess noise through correcting the propagation-induced distortions on the quality of the propagated quantum signal, we propose a general scheme of suppressing excess noise for CVQKD via adaptive optics (AO) approach. The analysis shows that phase-only AO compensation exhibits excellent performance in controlling the excess noise, which is embodied in substantially extending the secure propagation distance and improving the secret key rate of the system. And thereby the development and improvement of AO has the potential advantage to break the distance constraints due to the excess noise results from propagation-dominated factors. Our scheme provides a feasible method for further implementation of practical large-scale CVQKD.https://doi.org/10.1088/1367-2630/abb47ccontinuous-variable quantum key distributionexcess noise suppressionadaptive optics |
| spellingShingle | Geng Chai Peng Huang Zhengwen Cao Guihua Zeng Suppressing excess noise for atmospheric continuous-variable quantum key distribution via adaptive optics approach New Journal of Physics continuous-variable quantum key distribution excess noise suppression adaptive optics |
| title | Suppressing excess noise for atmospheric continuous-variable quantum key distribution via adaptive optics approach |
| title_full | Suppressing excess noise for atmospheric continuous-variable quantum key distribution via adaptive optics approach |
| title_fullStr | Suppressing excess noise for atmospheric continuous-variable quantum key distribution via adaptive optics approach |
| title_full_unstemmed | Suppressing excess noise for atmospheric continuous-variable quantum key distribution via adaptive optics approach |
| title_short | Suppressing excess noise for atmospheric continuous-variable quantum key distribution via adaptive optics approach |
| title_sort | suppressing excess noise for atmospheric continuous variable quantum key distribution via adaptive optics approach |
| topic | continuous-variable quantum key distribution excess noise suppression adaptive optics |
| url | https://doi.org/10.1088/1367-2630/abb47c |
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