Physics – Quantum Physics
Scientific paper
2006-01-18
Phys. Lett. A,354(2006)67~70
Physics
Quantum Physics
To appear in Phys. Lett. A
Scientific paper
10.1016/j.physleta.2006.01.035
We present a three-party simultaneous quantum secure direct communication
(QSDC) scheme by using Greenberger-Horne-Zeilinger (GHZ) states. This scheme
can be directly generalized to $N$-party QSDC by using $n$-particle GHZ states.
We show that the many-party simultaneous QSDC scheme is secure not only against
the intercept-and-resend attack but also against the disturbance attack.
Hong Suc-Kyoung
Ji Xin
Jin Xing-Ri
Um Chung-In
Yeon Kyu-Hwang
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