|
| related topics |
| {key, protocol, security} |
| {alice, bob, state} |
| {information, entropy, channel} |
| {state, phys, rev} |
| {error, code, errors} |
| {entanglement, phys, rev} |
| {states, state, optimal} |
| {state, states, coherent} |
| {cos, sin, state} |
|
Eavesdropper's Optimal Information in Variations of Bennett-Brassard
1984 Quantum Key Distribution in the Coherent Attacks
W. Y. Hwang, D. Ahn, S. W. Hwang
abstract: We calculate eavesdropper's optimal information on raw bits in
Bennett-Brassard 1984 quantum key distribution (BB84 QKD) and six-state scheme
in coherent attacks, using a formula by Lo and Chau [Science 283 (1999) 2050]
with single photon assumption. We find that eavesdropper's optimal information
in QKD without public announcement of bases [Phys. Lett. A 244 (1998) 489] is
the same as that of a corresponding QKD WITH it in the coherent attack. We
observe a sum-rule concerning each party's information.
- oai_identifier:
- oai:arXiv.org:quant-ph/0009006
- categories:
- quant-ph
- comments:
- no correction, 7 pages, 1 figure, RevTex
- doi:
- 10.1016/S0375-9601(00)00825-2
- arxiv_id:
- quant-ph/0009006
- journal_ref:
- Phys. Lett. A 279 (2001) 133
- created:
- 2000-09-01
- updated:
- 2001-02-02
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