J4 ›› 2011, Vol. 28 ›› Issue (6): 687-692.

• Quantum Optics • Previous Articles     Next Articles

Quantum communication based on cluster state

WANG Dong, ZHA Xin-wei   

  1. School of Communication and Information Engineering, Xi′an university of Posts and Telecommunications, Xi’an 710061, China
  • Received:2010-11-05 Revised:2011-03-31 Published:2011-11-28 Online:2011-11-14

Abstract:

Cluster state quantum dialogue is proposed, which enables both legitimate parties to exchange their 4 bit secret messages in a direct way.Compared with the there-particle W states, The shemes have the following advantages. After two-step security check, four-bit secret message can be transmitted to each other by transmitting of single particle with the aid of two-bit classical information. The scheme can discard the drawback the intercept-resend-attack, the entangle-measure attack, and the optimal incoherent attack.

Key words: quantum communication, cluster state, unitary transformations, measuring basis, optimal incoherent attack

CLC Number: