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Quantum
Information and Computation
ISSN: 1533-7146
published since 2001
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Vol.11 No.7&8
July 2011 |
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Probabilistic quantum key distribution
(pp0615-0637)
Tzonelih
Hwang, Chia-Wei Tsai, and Song-Kong Chong
doi:
https://doi.org/10.26421/QIC11.7-8-6
Abstracts:
This work presents a new concept in quantum key distribution called the
probabilistic quantum key distribution (PQKD) protocol, which is based
on the measurement uncertainty in quantum phenomena. It allows two
mutually untrusted communicants to negotiate an unpredictable key that
has a randomness guaranteed by the laws of quantum mechanics. In
contrast to conventional QKD (e.g., BB84) in which one communicant has
to trust the other for key distribution or quantum key agreement (QKA)
in which the communicants have to artificially contribute subkeys to a
negotiating key, PQKD is a natural and simple method for distributing a
secure random key. The communicants in the illustrated PQKD take
Einstein-Podolsky-Rosen (EPR) pairs as quantum resources and then use
entanglement swapping and Bell-measurements to negotiate an
unpredictable key.
Key words:
Quantum Information; Quantum Cryptography; Quantum Key
Agreement; Quantum Key Distribution. |
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