Intensity correlations in measurement-device-independent quantum key distribution
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866916424327364608 |
|---|---|
| author | Liu, Junxuan Xing, Tianyi Liu, Ruiyin Chen, Zihao Tan, Hao Huang, Anqi |
| author_facet | Liu, Junxuan Xing, Tianyi Liu, Ruiyin Chen, Zihao Tan, Hao Huang, Anqi |
| contents | The intensity correlations due to imperfect modulation during the quantum-state preparation in a measurement-device-independent quantum key distribution (MDI QKD) system compromise its security performance. Therefore, it is crucial to assess the impact of intensity correlations on the practical security of MDI QKD systems. In this work, we propose a theoretical model that quantitatively analyzes the secure key rate of MDI QKD systems under intensity correlations. Furthermore, we apply the theoretical model to a practical MDI QKD system with measured intensity correlations, which shows that the system struggles to generate keys efficiently under this model. We also explore the boundary conditions of intensity correlations to generate secret keys. This study extends the security analysis of intensity correlations to MDI QKD protocols, providing a methodology to evaluate the practical security of MDI QKD systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_08011 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Intensity correlations in measurement-device-independent quantum key distribution Liu, Junxuan Xing, Tianyi Liu, Ruiyin Chen, Zihao Tan, Hao Huang, Anqi Quantum Physics The intensity correlations due to imperfect modulation during the quantum-state preparation in a measurement-device-independent quantum key distribution (MDI QKD) system compromise its security performance. Therefore, it is crucial to assess the impact of intensity correlations on the practical security of MDI QKD systems. In this work, we propose a theoretical model that quantitatively analyzes the secure key rate of MDI QKD systems under intensity correlations. Furthermore, we apply the theoretical model to a practical MDI QKD system with measured intensity correlations, which shows that the system struggles to generate keys efficiently under this model. We also explore the boundary conditions of intensity correlations to generate secret keys. This study extends the security analysis of intensity correlations to MDI QKD protocols, providing a methodology to evaluate the practical security of MDI QKD systems. |
| title | Intensity correlations in measurement-device-independent quantum key distribution |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2408.08011 |