TY - JOUR
T1 - Fault tolerant two-step quantum secure direct communication protocol against collective noises
AU - Yang, Chun Wei
AU - Tsai, Chia Wei
AU - Hwang, Tzonelih
N1 - Funding Information:
The author would like to thank the anonymous reviewers for valuable comments and suggestious on the improvement of this article. This work was supported by the National Science Council, Taiwan, China (Grant No. NSC 98-2221-E-006-097-MY3).
PY - 2011/3
Y1 - 2011/3
N2 - This work proposes two fault tolerant quantum secure direct communication (QSDC) protocols which are robust against two kinds of collective noises: the collective-dephasing noises and the collective-rotation noises, respectively. The two QSDC protocols are constructed from four-qubit DF states which consist of two logical qubits. The receiver simply performs two Bell state measurements (rather than four-qubit joint measurements) to obtain the secret message. The protocols have qubit efficiency twice that of the other corresponding fault tolerant QSDC protocols. Furthermore, the proposed protocols are free from Trojan horse attacks.
AB - This work proposes two fault tolerant quantum secure direct communication (QSDC) protocols which are robust against two kinds of collective noises: the collective-dephasing noises and the collective-rotation noises, respectively. The two QSDC protocols are constructed from four-qubit DF states which consist of two logical qubits. The receiver simply performs two Bell state measurements (rather than four-qubit joint measurements) to obtain the secret message. The protocols have qubit efficiency twice that of the other corresponding fault tolerant QSDC protocols. Furthermore, the proposed protocols are free from Trojan horse attacks.
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U2 - 10.1007/s11433-011-4245-9
DO - 10.1007/s11433-011-4245-9
M3 - Article
AN - SCOPUS:79956081824
SN - 1674-7348
VL - 54
SP - 496
EP - 501
JO - Science China: Physics, Mechanics and Astronomy
JF - Science China: Physics, Mechanics and Astronomy
IS - 3
ER -