scholarly journals Experimental quantum key distribution with finite-key security analysis for noisy channels

2013 ◽  
Vol 4 (1) ◽  
Author(s):  
Davide Bacco ◽  
Matteo Canale ◽  
Nicola Laurenti ◽  
Giuseppe Vallone ◽  
Paolo Villoresi
Keyword(s):  
Quantum Key Distribution ◽  
Security Analysis ◽  
Key Distribution ◽  
Noisy Channels

scholarly journals Geometrical Optics Restricted Eavesdropping Analysis of Satellite-to-Satellite Secret Key Distillation

Entropy ◽  
2021 ◽  
Vol 23 (8) ◽  
pp. 950
Author(s):  
Ziwen Pan ◽  
Ivan B. Djordjevic
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Security Analysis ◽  
Key Distribution ◽  
Geometrical Optics ◽  
Secret Key ◽  
Satellite Applications

Traditionally, the study of quantum key distribution (QKD) assumes an omnipotent eavesdropper that is only limited by the laws of physics. However, this is not the case for specific application scenarios such as the QKD over a free-space link. In this invited paper, we introduce the geometrical optics restricted eavesdropping model for secret key distillation security analysis and apply to a few scenarios common in satellite-to-satellite applications.

scholarly journals Security Analysis of Discrete-Modulated Continuous-Variable Quantum Key Distribution over Seawater Channel

2019 ◽  
Vol 9 (22) ◽  
pp. 4956 ◽  
Author(s):  
Xinchao Ruan ◽  
Hang Zhang ◽  
Wei Zhao ◽  
Xiaoxue Wang ◽  
Xuan Li ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Secure Communication ◽  
Security Analysis ◽  
Finite Size ◽  
Key Distribution ◽  
Continuous Variable ◽  
Heterodyne Detection ◽  
Secret Key ◽  
Transmission Distance ◽  
Better Than

We investigate the optical absorption and scattering properties of four different kinds of seawater as the quantum channel. The models of discrete-modulated continuous-variable quantum key distribution (CV-QKD) in free-space seawater channel are briefly described, and the performance of the four-state protocol and the eight-state protocol in asymptotic and finite-size cases is analyzed in detail. Simulation results illustrate that the more complex is the seawater composition, the worse is the performance of the protocol. For different types of seawater channels, we can improve the performance of the protocol by selecting different optimal modulation variances and controlling the extra noise on the channel. Besides, we can find that the performance of the eight-state protocol is better than that of the four-state protocol, and there is little difference between homodyne detection and heterodyne detection. Although the secret key rate of the protocol that we propose is still relatively low and the maximum transmission distance is only a few hundred meters, the research on CV-QKD over the seawater channel is of great significance, which provides a new idea for the construction of global secure communication network.

Security Analysis of Three-State Quantum Key Distribution Protocol

2017 ◽  
Vol 54 (12) ◽  
pp. 122702
Author(s):  
王者 Wang Zhe ◽  
姚治海 Yao Zhihai ◽  
苟立丹 Gou Lidan ◽  
王晓茜 Wang Xiaoqian
Keyword(s):  
Quantum Key Distribution ◽  
Security Analysis ◽  
Key Distribution ◽  
Quantum Key Distribution Protocol

High-dimensional quantum key distribution using polarization-phase encoding: security analysis

2020 ◽  
Vol 18 (06) ◽  
pp. 2050031
Author(s):  
Ali Mehri-Toonabi ◽  
Mahdi Davoudi Darareh ◽  
Shahrooz Janbaz
Keyword(s):  
Quantum Key Distribution ◽  
Degrees Of Freedom ◽  
Single Photon ◽  
Transmission Rate ◽  
Security Analysis ◽  
Key Distribution ◽  
High Dimensional ◽  
Effective Transmission ◽  
Special Case ◽  
Polarization Phase

In this work, we introduce a high-dimensional polarization-phase (PoP)-based quantum key distribution protocol, briefly named PoP[Formula: see text], where [Formula: see text] is the dimension of a hybrid quantum state including polarization and phase degrees of freedom of the same photon, and [Formula: see text] is the number of mutually unbiased bases. We present a detailed description of the PoP[Formula: see text] protocol as a special case, and evaluate its security against various individual and coherent eavesdropping strategies, and in each case, we compare it with the BB84 and the two-dimensional (TD)-PoP protocols. In all the strategies, the error threshold and the effective transmission rate of the PoP[Formula: see text] protocol are far greater than the other two protocols. Unlike most high-dimensional protocols, the simplicity of producing and detecting the qudits and the use of conventional components (such as traditional single-photon sources and quantum channels) are among the features of the PoP[Formula: see text] protocol.

scholarly journals One Step Quantum Key Distribution Based on EPR Entanglement

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Jian Li ◽  
Na Li ◽  
Lei-Lei Li ◽  
Tao Wang
Keyword(s):  
Quantum Key Distribution ◽  
Storage Time ◽  
Security Analysis ◽  
Key Distribution ◽  
Simple Type ◽  
Dense Coding ◽  
Quantum Bits ◽  
Ping Pong ◽  
One Step ◽  
Quantum Key Distribution Protocol

Abstract A novel quantum key distribution protocol is presented, based on entanglement and dense coding and allowing asymptotically secure key distribution. Considering the storage time limit of quantum bits, a grouping quantum key distribution protocol is proposed, which overcomes the vulnerability of first protocol and improves the maneuverability. Moreover, a security analysis is given and a simple type of eavesdropper’s attack would introduce at least an error rate of 46.875%. Compared with the “Ping-pong” protocol involving two steps, the proposed protocol does not need to store the qubit and only involves one step.

scholarly journals Security analysis of an untrusted source for quantum key distribution: passive approach

2010 ◽  
Vol 12 (2) ◽  
pp. 023024 ◽  
Author(s):  
Yi Zhao ◽  
Bing Qi ◽  
Hoi-Kwong Lo ◽  
Li Qian
Keyword(s):  
Quantum Key Distribution ◽  
Security Analysis ◽  
Key Distribution
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