Two-step quantum direct communication protocol using the Einstein-Podolsky-Rosen pair block
By Fuguo Deng, G. Long, Xiao-Shu Liu. 2003
1,659 citations recorded by the source corpus.
A protocol for quantum secure direct communication using blocks of Einstein-Podolsky-Rosen (EPR) pairs is proposed. A set of ordered N EPR pairs is used as a data block for sending secret message directly. The ordered N EPR set is divided into two particle sequences, a checking sequence and a message-coding sequence. After transmitting the checking sequence, the two parties of communication check eavesdropping by measuring a fraction of particles randomly chosen, with random choice of two sets of measuring bases. After insuring the security of the quantum channel, the sender Alice encodes the secret message directly on the message-coding sequence and sends them to Bob. By combining the checking and message-coding sequences together, Bob is able to read out the encoded messages directly. The scheme is secure because an eavesdropper cannot get both sequences simultaneously. We also discuss issues in a noisy channel.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/48ccd40d303e99c552f72c9edca27ff6e5d132f9
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In Artificial Intelligence
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Experimental quantum secure direct communication with single photons (2015, background): “In 2003, Deng, Long and Liu proposed the two-step QSDC protocol 15 where the criteria for QSDC were explicitly stated.”
- One-step quantum secure direct communication. (2021, methodology): “It is interesting to compare this one-step QSDC protocol with existing typical quantum communication protocols, such as entanglement-based QKD [7,8], QT [14], and two-step entanglement-based QSDC [20,21].”
- Quantum Secure Direct Communication with Quantum Memory. (2016, methodology): “We briefly describe the basic procedure ofQSDCbased on the polarization entanglement [13,14] of photons.”