Enabling CV-MDI-QKD for weakly squeezed states using non-Gaussian operations

被引：0
作者：
Ahmad, Farsad [1 ,2 ]
Li, Jian [3 ]
Khalique, Aeysha [1 ,2 ,4 ]
机构：
[1] Lahore Univ Management Sci, Syed Babar Ali Sch Sci & Engn, Dept Phys, Lahore 54792, Pakistan
[2] Natl Univ Sci & Technol, Sch Nat Sci, Islamabad 44000, Pakistan
[3] Switching Technol Beijing Univ Posts & Telecommun, Informat Secur Ctr, State Key Lab Networking, Beijing 100876, Peoples R China
[4] Natl Ctr Phys NCP, Shahdra Valley Rd, Islamabad 44000, Pakistan
来源：
QUANTUM INFORMATION PROCESSING | 2024年 / 23卷 / 10期
关键词：
Quantum key distribution; Continuous variables QKD; Measurement device independent QKD; Non-Gaussian QKD; QUANTUM; PHOTON;
D O I：
10.1007/s11128-024-04565-w
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose a new non-Gaussian version of the continuous variables measurement device independent quantum key distribution (CV-MDI-QKD) protocol by utilizing a photon added-then-subtracted (PAS) state. We report that our single- and two-mode PAS-CV-MDI-QKD protocols outperform pure state CV-MDI-QKD protocol when considering weak squeezing and high noise, which is the practical regime. With such resources, CV-MDI-QKD is inaccessible when using a pure TMSV state, while PAS-CV-MDI-QKD can generate a useful key rate in this regime. We also compare PAS-CV-MDI-QKD with a two-mode photon replaced (2PR) state, which was not studied in low squeezing for MDI-QKD before.
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页数：17
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