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TELKOMNIKA Indonesian Journal of Electrical Engineering

Deterministic key distribution scheme based on the non-locality of unentangled states

Xiaoyu Li, Qiuyu Zhao

Published May 22, 2013• 0 citations
Publisher

Abstract

In this paper we provide a deterministic key distribution scheme based on the non-locality of untangled states in which people can share a predeterministic string as the key. The fundamental Laws of quantum mechanics guarantee that the scheme is unconditionally secure. There are no entangled states or complex quantum operations needed in our scheme. We show that our scheme is easy to carry out in practice. Moreover our scheme is robust against possible noise and attacks. DOI:  http://dx.doi.org/10.11591/telkomnika.v11i6.2611

DOI
10.11591/telkomnika.v11i6.2611

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In this paper we provide a deterministic key distribution scheme based on the non-locality of untangled states in which people can share a predeterministic string as the key. The fundamental Laws of quantum mechanics guarantee that the scheme is unconditionally secure. There are no entangled states or complex quantum operations needed in our scheme. We show that our scheme is easy to carry out in practice. Moreover our scheme is robust against possible noise and attacks. DOI:  http://dx.doi.org/10.11591/telkomnika.v11i6.2611
Quantum key distribution is the most secure technology to distribute a secret key. There is a set of orthogonal product states in a two-qubit three-state quantum system which can show nonlocality. This paper provides a quantum key distribution protocol based otn the nonlocality of such system. The two parties establish the key by exchanging quantum qubits and performing the collective measurement on them. The laws of quantum mechanics guarantee that this protocol is unconditionally secure. No other people can get the key without being found. There are no entangled states and quantum operations needed in the protocol. So it is easier to carry out in practice. And it can gain high reliability and robustness.