Security proof for quantum key distribution using qudit systems
Abstract
We provide security bounds against coherent attacks for two families of quantum key distribution protocols that use d-dimensional quantum systems. In the asymptotic regime, both the secret key rate for fixed noise and the robustness to noise increase with d. The finite key corrections are found to be almost insensitive to d≲20.
- Publication:
-
Physical Review A
- Pub Date:
- September 2010
- DOI:
- arXiv:
- arXiv:1003.5464
- Bibcode:
- 2010PhRvA..82c0301S
- Keywords:
-
- 03.67.Dd;
- 03.67.Ac;
- Quantum cryptography;
- Quantum algorithms protocols and simulations;
- Quantum Physics
- E-Print:
- 5 pages, 1 figure, version 3 corrects equations (9) and (11), and slightly modifies the figure to reflect the change to equation (11)