Nonorthogonal unitaries in two-way quantum key distribution

Shamsul Shaari, Jesni (2014) Nonorthogonal unitaries in two-way quantum key distribution. Physics Letters A, 378 (11-12). pp. 863-868. ISSN 0375-9601

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Abstract

Two-way Quantum Key Distribution (QKD) schemes commonly make use of a set of unitaries corresponding to binary encodings which can in principle be distinguished perfectly. In this paper, inline with the proposal in Chiribella et al. (2008) [13], we introduce a non-entangled two-way QKD scheme with two sets of unitaries of which the elements in one set can be viewed as ‘nonorthogonal’ to elements in the other with the aim of naturally suppressing an eavesdropper's information to provide for a higher security threshold. Security analysis is done in the context of individual attack strategies for a quick comparison with the conventional two-way QKD scheme. Given the richer structure of the improvement, future direction is also discussed.

Item Type:	Article (Journal)
Additional Information:	3844/35596
Uncontrolled Keywords:	Nonorthogonal; Quantum key distribution; Two-way QKD
Subjects:	Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Physics
Depositing User:	Dr. Jesni Shamsul Shaari
Date Deposited:	18 Feb 2014 14:47
Last Modified:	26 Sep 2017 10:17
URI:	http://irep.iium.edu.my/id/eprint/35596

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