dorsal/arxiv
View SchemaRevisiting controlled quantum secure direct communication using a non-symmetric quantum channel with quantum superdense coding
| Authors | Jun Liu, Zhan-jun Zhang |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0612206 |
| URL | https://arxiv.org/abs/quant-ph/0612206 |
Abstract
Recently Xia and Song [Phys. Lett. A (In press)] have proposed a controlled quantum secure direct communication (CQSDC) protocol. They claimed that in their protocol only with the help of the controller Charlie, the receiver Alice can successfully extract the secret message from the sender Bob. In this letter, first we will show that within their protocol the controller Charlie's role can be excluded due to their unreasonable design. We then revise the Xia-Song CQSDC protocol such that its original advantages are retained and the CQSDC can be really realized.
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"date_created": "2026-03-02T18:02:33.973000Z",
"date_modified": "2026-03-02T18:02:33.973000Z",
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"abstract": "Recently Xia and Song [Phys. Lett. A (In press)] have proposed a controlled\nquantum secure direct communication (CQSDC) protocol. They claimed that in\ntheir protocol only with the help of the controller Charlie, the receiver Alice\ncan successfully extract the secret message from the sender Bob. In this\nletter, first we will show that within their protocol the controller Charlie\u0027s\nrole can be excluded due to their unreasonable design. We then revise the\nXia-Song CQSDC protocol such that its original advantages are retained and the\nCQSDC can be really realized.",
"arxiv_id": "quant-ph/0612206",
"authors": [
"Jun Liu",
"Zhan-jun Zhang"
],
"categories": [
"quant-ph"
],
"title": "Revisiting controlled quantum secure direct communication using a non-symmetric quantum channel with quantum superdense coding",
"url": "https://arxiv.org/abs/quant-ph/0612206"
},
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"variant": "snapshot-2026-03-01",
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