Abstract
This paper proposes a measurement method capable of distinguishing six-qubit decoherence-free states. In addition, based on this measurement method, the paper presents an authenticated quantum secure direct communication (AQSDC) protocol that is simultaneously robust against both collective dephasing noise and collective rotation noise. This AQSDC protocol enables a sender to transmit secure and authenticated messages to a receiver via one-step quantum transmission without using classical channels. The new measurement method enables the qubit efficiency of the AQSDC protocol to be superior to those of existing AQSDC protocols. The analyses presented herein demonstrate that the AQSDC protocol is secure and effective.
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Acknowledgments
We would like to thank the Ministry of Science and Technology of the Republic of China for financially supporting this research under Contract No. MOST 104-2221-E-006-102-.
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Tsai, CL., Hwang, T. Six-Qubit Decoherence-Free State Measurement Method and its Application to Development of Authenticated Quantum Secure Direct Communication Protocol. Int J Theor Phys 57, 2513–2522 (2018). https://doi.org/10.1007/s10773-018-3773-8
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DOI: https://doi.org/10.1007/s10773-018-3773-8