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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/abef98 |
| _version_ | 1797750103125000192 |
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| author | Xiao-Yu Cao Jie Gu Yu-Shuo Lu Hua-Lei Yin Zeng-Bing Chen |
| author_facet | Xiao-Yu Cao Jie Gu Yu-Shuo Lu Hua-Lei Yin Zeng-Bing Chen |
| author_sort | Xiao-Yu Cao |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-12T16:28:47Z |
| format | Article |
| id | doaj.art-bd9e0e0c344e40a0a8562b69d50dbb47 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:28:47Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-bd9e0e0c344e40a0a8562b69d50dbb472023-08-08T15:37:15ZengIOP PublishingNew Journal of Physics1367-26302021-01-0123404300210.1088/1367-2630/abef98Coherent one-way quantum conference key agreement based on twin fieldXiao-Yu Cao0Jie Gu1Yu-Shuo Lu2Hua-Lei Yin3https://orcid.org/0000-0002-7718-0818Zeng-Bing Chen4National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, People’s Republic of ChinaNational Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, People’s Republic of ChinaNational Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, People’s Republic of ChinaNational Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, People’s Republic of ChinaNational Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, People’s Republic of ChinaQuantum 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.https://doi.org/10.1088/1367-2630/abef98quantum conference key agreementcoherent one-waytwin-field |
| spellingShingle | Xiao-Yu Cao Jie Gu Yu-Shuo Lu Hua-Lei Yin Zeng-Bing Chen Coherent one-way quantum conference key agreement based on twin field New Journal of Physics quantum conference key agreement coherent one-way twin-field |
| title | Coherent one-way quantum conference key agreement based on twin field |
| title_full | Coherent one-way quantum conference key agreement based on twin field |
| title_fullStr | Coherent one-way quantum conference key agreement based on twin field |
| title_full_unstemmed | Coherent one-way quantum conference key agreement based on twin field |
| title_short | Coherent one-way quantum conference key agreement based on twin field |
| title_sort | coherent one way quantum conference key agreement based on twin field |
| topic | quantum conference key agreement coherent one-way twin-field |
| url | https://doi.org/10.1088/1367-2630/abef98 |
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