Unconditional security of quantum key distribution and the uncertainty principle
نویسنده
چکیده
An approach to the unconditional security of quantum key distribution protocols is presented, which is based on the uncertainty principle. The approach applies to every case that has been treated via the argument by Shor and Preskill, but it is not necessary to find quantum error correcting codes. It can also treat the cases with uncharacterized apparatuses. The proof can be applied to cases where the secret key rate is larger than the distillable entanglement.
منابع مشابه
un 2 00 4 Perfect random number generator is unnecessary for secure quantum key distribution
Quantum key distribution(QKD) makes it possible for two remotely separated parties do unconditionally secure communications. In principle, the security is guaranteed by the uncertainty principle in quantum mechanics: if any third party watches the key, she must disturbs the quantum bits therefore she has a risk to be detected. However, the security in practice is quite different, since many of ...
متن کاملua nt - p h / 04 05 18 2 v 1 3 1 M ay 2 00 4 Perfect random number generator is unnecessary for secure quantum key distribution
Quantum key distribution(QKD) makes it possible for two remotely separated parties do unconditionally secure communications. In principle, the security is guaranteed by the uncertainty principle in quantum mechanics: if any third party watches the key, she must disturbs the quantum bits therefore she has a risk to be detected. However, the security in practice is quite different, since many of ...
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