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Security analysis for a mutually partially unbiased bases–based protocol
- Source :
- Journal of the Optical Society of America B. 39:2823
- Publication Year :
- 2022
- Publisher :
- Optica Publishing Group, 2022.
-
Abstract
- The recently proposed mutually partially unbiased bases (MPUB)–based protocol, which encodes with Laguerre–Gaussian modes and Hermite–Gaussian modes of the same mode order, can close the security loophole caused by state-dependent diffraction. However, its pessimistic security proof limits the performance, and some practical issues, such as finite-key size and imperfect sources, have not been considered. Here, we improve the key rates of the MPUB-based protocol by accurately estimating the phase error rate. Moreover, the effect of finite-key size and its performance when combined with the decoy state method are demonstrated. Our work broadens the application scope of the MPUB-based protocol, and thereby advances the development of high-dimensional quantum key distribution using spatial modes.
- Subjects :
- Statistical and Nonlinear Physics
Atomic and Molecular Physics, and Optics
Subjects
Details
- ISSN :
- 15208540 and 07403224
- Volume :
- 39
- Database :
- OpenAIRE
- Journal :
- Journal of the Optical Society of America B
- Accession number :
- edsair.doi...........c3f171009baa59764afa5f2334ba2005