Coherent one-way quantum conference key agreement based on twin field
Quantum conference key agreement (CKA) enables key sharing among multiple trusted users with information-theoretic security. Currently, the key rates of most quantum CKA protocols suffer from the limit of the total efficiency among quantum channels. Inspired by the coherent one-way and twin-field qu...
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| Veröffentlicht in: | New journal of physics 2021-04, Vol.23 (4), p.43002 |
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| container_issue | 4 |
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| container_title | New journal of physics |
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| creator | Cao, Xiao-Yu Gu, Jie Lu, Yu-Shuo Yin, Hua-Lei Chen, Zeng-Bing |
| description | Quantum conference key agreement (CKA) enables key sharing among multiple trusted users with information-theoretic security. Currently, the key rates of most quantum CKA protocols suffer from the limit of the total efficiency among quantum channels. Inspired by the coherent one-way and twin-field quantum key distribution (QKD) protocols, we propose a quantum CKA protocol of three users. Exploiting coherent states with intensity 0 and
μ
to encode logic bits, our protocol can break the limit. Additionally, the requirements of phase randomization and multiple intensity modulation are removed in our protocol, making its experimental demonstration simple. |
| doi_str_mv | 10.1088/1367-2630/abef98 |
| format | Article |
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μ
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μ
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μ
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| subjects | Coherence coherent one-way Conference key distribution systems Information theory Physics Protocol quantum conference key agreement Quantum cryptography twin-field |
| title | Coherent one-way quantum conference key agreement based on twin field |
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