利用非高斯运算为弱挤压态启用 CV-MDI-QKD

IF 2.2 3区物理与天体物理 Q1 PHYSICS, MATHEMATICAL

Quantum Information Processing Pub Date : 2024-10-17 DOI:10.1007/s11128-024-04565-w

Farsad Ahmad, Jian Li, Aeysha Khalique

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引用次数: 0

摘要

我们提出了一种新的非高斯版本的连续变量测量设备独立量子密钥分配（CV-MDI-QKD）协议，它利用了光子先添加后减缩（PAS）状态。我们报告说，当考虑到弱挤压和高噪声（这是实际情况）时，我们的单模和双模 PAS-CV-MDI-QKD 协议优于纯态 CV-MDI-QKD 协议。在这种资源条件下，使用纯 TMSV 状态时，CV-MDI-QKD 无法访问，而 PAS-CV-MDI-QKD 则能在这种情况下生成有用的密钥速率。我们还将 PAS-CV-MDI-QKD 与双模光子置换（2PR）态进行了比较，在低挤压条件下用于 MDI-QKD 时，这种态以前从未被研究过。

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

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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来源期刊

Quantum Information Processing 物理-物理：数学物理

CiteScore

4.10

自引率

20.00%

发文量

337

审稿时长

4.5 months

期刊介绍： Quantum Information Processing is a high-impact, international journal publishing cutting-edge experimental and theoretical research in all areas of Quantum Information Science. Topics of interest include quantum cryptography and communications, entanglement and discord, quantum algorithms, quantum error correction and fault tolerance, quantum computer science, quantum imaging and sensing, and experimental platforms for quantum information. Quantum Information Processing supports and inspires research by providing a comprehensive peer review process, and broadcasting high quality results in a range of formats. These include original papers, letters, broadly focused perspectives, comprehensive review articles, book reviews, and special topical issues. The journal is particularly interested in papers detailing and demonstrating quantum information protocols for cryptography, communications, computation, and sensing.