|
| related topics |
| {key, protocol, security} |
| {error, code, errors} |
| {alice, bob, state} |
| {qubit, qubits, gate} |
| {spin, pulse, spins} |
|
Practical Scheme To Share A Secret Key Through An Up To 27.6% Bit Error
Rate Quantum Channel
H. F. Chau
abstract: A secret key shared through quantum key distribution between two cooperative
players is secure against any eavesdropping attack allowed by the laws of
physics. Yet, such a key can be established only when the quantum channel error
rate due to eavesdropping or imperfect apparatus is low. Here, I report a
practical quantum key distribution scheme making use of an adaptive privacy
amplification procedure with two-way classical communication. Then, I prove
that the scheme generates a secret key whenever the bit error rate of the
quantum channel is less than $0.5-0.1\sqrt{5} \approx 27.6%$, thereby making it
the most error resistant scheme known to date.
- oai_identifier:
- oai:arXiv.org:quant-ph/0205060
- categories:
- quant-ph
- comments:
- 4 pages, with a new analytical result, to appear in PRA
- arxiv_id:
- quant-ph/0205060
- created:
- 2002-05-11
- updated:
- 2002-11-10
Full article ▸
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