Academic Journal
Memory-Saving Implementation of High-Speed Privacy Amplification Algorithm for Continuous-Variable Quantum Key Distribution
| Title: | Memory-Saving Implementation of High-Speed Privacy Amplification Algorithm for Continuous-Variable Quantum Key Distribution |
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| Authors: | Dengwen Li, Peng Huang, Yingming Zhou, Yuan Li, Guihua Zeng |
| Source: | IEEE Photonics Journal, Vol 10, Iss 5, Pp 1-12 (2018) |
| Publisher Information: | IEEE, 2018. |
| Publication Year: | 2018 |
| Collection: | LCC:Applied optics. Photonics LCC:Optics. Light |
| Subject Terms: | Privacy amplification, linear feedback shift register, Toeplitz matrix, quantum key distribution., Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467 |
| More Details: | Privacy amplification is an indispensable procedure to share secure secret key between legitimate parties in quantum key distribution (QKD) because a portion of bits are still leaked to eavesdropper Eve after the secret reconciliation. Here, we propose a novel privacy amplification scheme with an optimal hash function. In particular, by utilizing the linear feedback shift register (LFSR) technique, we optimize and simplify the construction of the Toeplitz matrix. In this way, the LFSR-based Toeplitz matrix is used to execute the privacy amplification algorithm. The hardware storage resources can then be drastically saved, and the time consuming will be only about half of that without using the LFSR-based Toeplitz matrix. This work breaks the bottleneck of privacy amplification in high-speed continuous-variable QKD (CVQKD), and thus contributes to the real-time performance of the whole CVQKD system. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1943-0655 |
| Relation: | https://ieeexplore.ieee.org/document/8435961/; https://doaj.org/toc/1943-0655 |
| DOI: | 10.1109/JPHOT.2018.2865486 |
| Access URL: | https://doaj.org/article/3074ce6f322e481bacc680efe8b89cda |
| Accession Number: | edsdoj.3074ce6f322e481bacc680efe8b89cda |
| Database: | Directory of Open Access Journals |
| ISSN: | 19430655 |
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| DOI: | 10.1109/JPHOT.2018.2865486 |
| Published in: | IEEE Photonics Journal |
| Language: | English |