Secure Key Rate of the BB84 Protocol using Finite Sample Bits
| Autor: | Sano, Yousuke, Matsumoto, Ryutaroh, Uyematsu, Tomohiko |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | J. Phys. A 43, 495302 (2010) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1751-8113/43/49/495302 |
| Popis: | We improve the non-asymptotic key rate shown by Scarani and Renner by proposing several methods to construct tighter conservative confidence intervals of the phase error rate than one shown by them. In addition, we show that the accurate channel estimation method non-asymptotically increases the key rate over the amplitude damping channel as well as the asymptotic case in the BB84 protocol. Comment: 22 pages, 2 figures, to be published in J. Phys. A. Version 4 clarifies the assumptions of this paper. The source files of versions 3&4 include computer program files used in the numerical computation |
| Databáze: | arXiv |
| Externí odkaz: |
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