dorsal/arxiv
View SchemaDeterministic Secure Direct Communication Using Ping-pong protocol without public channel
| Authors | Qing-yu Cai |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0301048 |
| URL | https://arxiv.org/abs/quant-ph/0301048 |
Abstract
Based on an EPR pair of qubits and allowing asymptotically secure key distribution, a secure communication protocol is presented. Bob sends either of the EPR pair qubits to Alice. Alice receives the travel qubit. Then she can encode classical information by local unitary operations on this travel qubit. Alice send the qubit back to Bob. Bob can get Alice's information by measurement on the two photons in Bell operator basis. If Eve in line, she has no access to Bob's home qubit. All her operations are restricted to the travel qubit. In order to find out which opeartion Alice performs, Eve's operation must include measurements. The EPR pair qubits are destroyed. Bob's measurement on the two photons in Bell operator basis can help him to judge whether Eve exist in line or not. In this protocal, a public channel is not necessary.
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"abstract": "Based on an EPR pair of qubits and allowing asymptotically secure key\ndistribution, a secure communication protocol is presented. Bob sends either of\nthe EPR pair qubits to Alice. Alice receives the travel qubit. Then she can\nencode classical information by local unitary operations on this travel qubit.\nAlice send the qubit back to Bob. Bob can get Alice\u0027s information by\nmeasurement on the two photons in Bell operator basis. If Eve in line, she has\nno access to Bob\u0027s home qubit. All her operations are restricted to the travel\nqubit. In order to find out which opeartion Alice performs, Eve\u0027s operation\nmust include measurements. The EPR pair qubits are destroyed. Bob\u0027s measurement\non the two photons in Bell operator basis can help him to judge whether Eve\nexist in line or not. In this protocal, a public channel is not necessary.",
"arxiv_id": "quant-ph/0301048",
"authors": [
"Qing-yu Cai"
],
"categories": [
"quant-ph"
],
"title": "Deterministic Secure Direct Communication Using Ping-pong protocol without public channel",
"url": "https://arxiv.org/abs/quant-ph/0301048"
},
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