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Multi-party quantum key distribution protocol in quantum network
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DOI：10.1140/epjqt/s40507-024-00275-5.png)
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This study proposes a measurement property of graph states and applies it to design a mediated multiparty quantum key distribution (M-MQKD) protocol for a repeater-based quantum network in a restricted quantum environment. The protocol enables remote classical users, who cannot directly transmit qubits, to securely distribute a secret key with the assistance of potentially dishonest quantum repeaters. Classical users only require two quantum capabilities, while quantum repeaters handle entanglement transmission through single-photon measurements. The one-way transmission approach eliminates the need for additional defenses against quantum Trojan horse attacks, reducing maintenance costs compared to round-trip or circular transmission methods. As a result, the M-MQKD protocol is lightweight and easy to implement. The study also evaluates the security of the protocol and demonstrates its practicality through quantum network simulations.
Keyword:
Multiparty semi-quantum key distribution
Mediated multiparty quantum key distribution
Quantum network
Quantum repeater
Quantum Trojan horse attack
期刊
IF:
5.6
论文数:
532
被引数:
1.1K
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