scholarly journals Security proof of differential phase shift quantum key distribution in the noiseless case

2008 ◽  
Vol 78 (4) ◽  
Author(s):  
Yi-Bo Zhao ◽  
Chi-Hang Fred Fung ◽  
Zheng-Fu Han ◽  
Guang-Can Guo
Keyword(s):  
Phase Shift ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Differential Phase Shift ◽  
Differential Phase ◽  
Security Proof

A fiber-based differential phase shift quantum key distribution scheme with higher key creation efficiency

2009 ◽  
Vol 282 (14) ◽  
pp. 3037-3039 ◽  
Author(s):  
Huani Zhang ◽  
Jindong Wang ◽  
Xiaobao Liu ◽  
Zhengjun Wei ◽  
Songhao Liu
Keyword(s):  
Phase Shift ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Differential Phase Shift ◽  
Differential Phase ◽  
Distribution Scheme

Upper bounds on the performance of differential-phase-shift quantum key distribution

2009 ◽  
Vol 9 (1&2) ◽  
pp. 62-80
Author(s):  
H. Gomez-Sousa ◽  
M. Curty
Keyword(s):  
Phase Shift ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Upper Bounds ◽  
The State ◽  
Differential Phase Shift ◽  
Differential Phase ◽  
Unambiguous Discrimination

In this paper, we investigate limitations imposed by sequential attacks on the performance of a differential-phase-shift (DPS) quantum key distribution (QKD) protocol with weak coherent pulses. Specifically, we analyze a sequential attack based on optimal unambiguous discrimination of the relative phases between consecutive signal states emitted by the source. We show that this attack can provide tighter upper bounds for the security of a DPS QKD scheme than those derived from sequential attacks where the eavesdropper aims to identify the state of each signal emitted by the source unambiguously.

scholarly journals Round-robin differential-phase-shift quantum key distribution with twisted photons

2018 ◽  
Vol 98 (1) ◽  
Author(s):  
Frédéric Bouchard ◽  
Alicia Sit ◽  
Khabat Heshami ◽  
Robert Fickler ◽  
Ebrahim Karimi
Keyword(s):  
Phase Shift ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Round Robin ◽  
Differential Phase Shift ◽  
Differential Phase
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