dorsal/arxiv
View SchemaA Two-Step Quantum Direct Communication Protocol Using Einstein-Podolsky-Rosen Pair Block
| Authors | Fu-Guo Deng, Gui Lu Long, Xiao-Shu Liu |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0308173 |
| URL | https://arxiv.org/abs/quant-ph/0308173 |
| DOI | 10.1103/PhysRevA.68.042317 |
| Journal | Phys. Rev. A68, 042317 (2003) |
Abstract
A protocol for quantum secure direct communication using blocks of 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 send 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.
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"abstract": "A protocol for quantum secure direct communication using blocks of EPR pairs\nis proposed. A set of ordered $N$ EPR pairs is used as a data block for sending\nsecret message directly. The ordered $N$ EPR set is divided into two particle\nsequences, a checking sequence and a message-coding sequence. After\ntransmitting the checking sequence, the two parties of communication check\neavesdropping by measuring a fraction of particles randomly chosen, with random\nchoice of two sets of measuring bases. After insuring the security of the\nquantum channel, the sender, Alice encodes the secret message directly on the\nmessage-coding sequence and send them to Bob. By combining the checking and\nmessage-coding sequences together, Bob is able to read out the encoded messages\ndirectly. The scheme is secure because an eavesdropper cannot get both\nsequences simultaneously. We also discuss issues in a noisy channel.",
"arxiv_id": "quant-ph/0308173",
"authors": [
"Fu-Guo Deng",
"Gui Lu Long",
"Xiao-Shu Liu"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.68.042317",
"journal_ref": "Phys. Rev. A68, 042317 (2003)",
"title": "A Two-Step Quantum Direct Communication Protocol Using Einstein-Podolsky-Rosen Pair Block",
"url": "https://arxiv.org/abs/quant-ph/0308173"
},
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