Volume 127, Number 5, September 2019
|Number of page(s)||6|
|Published online||16 October 2019|
A quantum secure direct communication protocol using entangled beam pairs
1 College of Electrical and Photoelectronic Engineering, West Anhui University - Lu An, Anhui 237012, China
2 Department of Physics, Tsinghua University - Beijing, 100084, China
3 Beijing Academy of Quantum Information - Beijing, 100084, China
4 The High School Affiliated to Renmin University of China - Beijing 100080, China
Received: 21 June 2019
Accepted: 2 September 2019
We propose a feasible high-dimensional two-step quantum secure direct communication scheme by using the Einstein-Podolsky-Rosen entangled beam pair. Accoding to the quality of the two superposition forms of the EPR entangled state (two-mode squeezed vacuum state), we select the mutually unbiased bases for quantum measurement. With the unitary operation, we can subtly encode the confidential information in the quantum state. We also conducted a more detailed analysis of the security of this protocol.
PACS: 03.67.Hk – Quantum communication / 03.67.Dd – Quantum cryptography and communication security
© EPLA, 2019
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