Fault tolerant two-step quantum secure direct communication protocol against collective noises

Chun Wei Yang, Chia Wei Tsai, Tzonelih Hwang

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)496-501
Number of pages6
JournalScience China: Physics, Mechanics and Astronomy
Volume54
Issue number3
DOIs
Publication statusPublished - 2011 Mar 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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