DOUBLING THE CAPACITY OF QUANTUM KEY DISTRIBUTION BY USING BOTH POLARIZATION AND DIFFERENTIAL PHASE SHIFT

2009 ◽  
Vol 07 (02) ◽  
pp. 529-537 ◽  
Author(s):  
WAN-YING WANG ◽  
CHUAN WANG ◽  
GUI-LU LONG
Keyword(s):  
Phase Shift ◽  
Quantum Entanglement ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Information Capacity ◽  
Detection Time ◽  
Random Choice ◽  
Photon Polarization ◽  
Differential Phase Shift ◽  
Differential Phase

Using differential phase shift and photon polarization, we propose two quantum key distribution schemes, i.e. a double-coding BB84 protocol and a double-coding BBM92 protocol. The information capacity of these protocols is twice of the original protocols and their security is ensured by the use of detection time slots, random choice of bases and quantum entanglement. These double-coding protocols are feasible with present technology.

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

Round-robin-differential-phase-shift quantum key distribution with monitoring signal disturbance

2018 ◽  
Vol 43 (17) ◽  
pp. 4228 ◽  
Author(s):  
Rong Wang ◽  
Zhen-Qiang Yin ◽  
Shuang Wang ◽  
Wei Chen ◽  
Guang-Can Guo ◽  
...  
Keyword(s):  
Phase Shift ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Round Robin ◽  
Differential Phase Shift ◽  
Differential Phase

Time-bin multiplexed differential phase shift quantum key distribution (Conference Presentation)

2020 ◽  
Author(s):  
Anil Prabhakar ◽  
Gautam K. Shaw ◽  
Shyam Sridharan ◽  
Foram Shingala ◽  
Prabha Mandyam ◽  
...  
Keyword(s):  
Phase Shift ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Differential Phase Shift ◽  
Differential Phase
Sign in / Sign up

Export Citation Format

Share Document