Classical channel bandwidth requirements in continuous variable quantum key distribution systems
Abstract The reconciliation method for continuous variable quantum key distribution systems is usually chosen based on its reconciliation efficiency. Nonetheless, one must also consider the requirements of each reconciliation method in terms of the amount of information transmitted on the classical...
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| Format: | Article |
| Language: | English |
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Wiley
2024-12-01
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| Series: | IET Quantum Communication |
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| Online Access: | https://doi.org/10.1049/qtc2.12103 |
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| _version_ | 1846100818966609920 |
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| author | Margarida Almeida Daniel Pereira Armando N. Pinto Nuno A. Silva |
| author_facet | Margarida Almeida Daniel Pereira Armando N. Pinto Nuno A. Silva |
| author_sort | Margarida Almeida |
| collection | DOAJ |
| description | Abstract The reconciliation method for continuous variable quantum key distribution systems is usually chosen based on its reconciliation efficiency. Nonetheless, one must also consider the requirements of each reconciliation method in terms of the amount of information transmitted on the classical channel. Such may limit the achievable key rates. For instance, multidimensional reconciliation of dimension 8 demands a classical channel bandwidth 43 times greater than that of the quantum channel baud rate. Decreasing the dimension to 4 halves the required bandwidth, allowing for higher quantum channel baud rates and higher key rates for shorter transmission distances, despite the lesser reconciliation performance. |
| format | Article |
| id | doaj-art-3a545f614df94d11ad0df2e51812fdf5 |
| institution | Kabale University |
| issn | 2632-8925 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Quantum Communication |
| spelling | doaj-art-3a545f614df94d11ad0df2e51812fdf52024-12-29T13:34:29ZengWileyIET Quantum Communication2632-89252024-12-015460161110.1049/qtc2.12103Classical channel bandwidth requirements in continuous variable quantum key distribution systemsMargarida Almeida0Daniel Pereira1Armando N. Pinto2Nuno A. Silva3Instituto de Telecomunicações University of Aveiro Campus Universitário de Santiago Aveiro PortugalInstituto de Telecomunicações University of Aveiro Campus Universitário de Santiago Aveiro PortugalInstituto de Telecomunicações University of Aveiro Campus Universitário de Santiago Aveiro PortugalInstituto de Telecomunicações University of Aveiro Campus Universitário de Santiago Aveiro PortugalAbstract The reconciliation method for continuous variable quantum key distribution systems is usually chosen based on its reconciliation efficiency. Nonetheless, one must also consider the requirements of each reconciliation method in terms of the amount of information transmitted on the classical channel. Such may limit the achievable key rates. For instance, multidimensional reconciliation of dimension 8 demands a classical channel bandwidth 43 times greater than that of the quantum channel baud rate. Decreasing the dimension to 4 halves the required bandwidth, allowing for higher quantum channel baud rates and higher key rates for shorter transmission distances, despite the lesser reconciliation performance.https://doi.org/10.1049/qtc2.12103quantum communicationquantum cryptography |
| spellingShingle | Margarida Almeida Daniel Pereira Armando N. Pinto Nuno A. Silva Classical channel bandwidth requirements in continuous variable quantum key distribution systems IET Quantum Communication quantum communication quantum cryptography |
| title | Classical channel bandwidth requirements in continuous variable quantum key distribution systems |
| title_full | Classical channel bandwidth requirements in continuous variable quantum key distribution systems |
| title_fullStr | Classical channel bandwidth requirements in continuous variable quantum key distribution systems |
| title_full_unstemmed | Classical channel bandwidth requirements in continuous variable quantum key distribution systems |
| title_short | Classical channel bandwidth requirements in continuous variable quantum key distribution systems |
| title_sort | classical channel bandwidth requirements in continuous variable quantum key distribution systems |
| topic | quantum communication quantum cryptography |
| url | https://doi.org/10.1049/qtc2.12103 |
| work_keys_str_mv | AT margaridaalmeida classicalchannelbandwidthrequirementsincontinuousvariablequantumkeydistributionsystems AT danielpereira classicalchannelbandwidthrequirementsincontinuousvariablequantumkeydistributionsystems AT armandonpinto classicalchannelbandwidthrequirementsincontinuousvariablequantumkeydistributionsystems AT nunoasilva classicalchannelbandwidthrequirementsincontinuousvariablequantumkeydistributionsystems |