scholarly journals Provably secure and practical quantum key distribution over 307 km of optical fibre

2015 ◽  
Vol 9 (3) ◽  
pp. 163-168 ◽  
Author(s):  
Boris Korzh ◽  
Charles Ci Wen Lim ◽  
Raphael Houlmann ◽  
Nicolas Gisin ◽  
Ming Jun Li ◽  
...  
Keyword(s):  
Optical Fibre ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Provably Secure

scholarly journals Twin-field quantum key distribution over a 511 km optical fibre linking two distant metropolitan areas

2021 ◽  
Author(s):  
Jiu-Peng Chen ◽  
Chi Zhang ◽  
Yang Liu ◽  
Cong Jiang ◽  
Wei-Jun Zhang ◽  
...  
Keyword(s):  
Optical Fibre ◽  
Quantum Key Distribution ◽  
Metropolitan Areas ◽  
Key Distribution

scholarly journals Quantum key distribution over a 48 km optical fibre network

2000 ◽  
Vol 47 (2-3) ◽  
pp. 533-547 ◽  
Author(s):  
Richard J. Hughes ◽  
George L. Morgan ◽  
C. Glen Peterson
Keyword(s):  
Optical Fibre ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Fibre Network

scholarly journals Provably secure and high-rate quantum key distribution with time-bin qudits

2017 ◽  
Vol 3 (11) ◽  
pp. e1701491 ◽  
Author(s):  
Nurul T. Islam ◽  
Charles Ci Wen Lim ◽  
Clinton Cahall ◽  
Jungsang Kim ◽  
Daniel J. Gauthier
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
High Rate ◽  
Provably Secure

scholarly journals Long-distance quantum key distribution in optical fibre

2006 ◽  
Vol 8 (9) ◽  
pp. 193-193 ◽  
Author(s):  
P A Hiskett ◽  
D Rosenberg ◽  
C G Peterson ◽  
R J Hughes ◽  
S Nam ◽  
...  
Keyword(s):  
Optical Fibre ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Long Distance

Experimental Quantum Key Distribution over 14.8 km in a Special Optical Fibre

2003 ◽  
Vol 20 (5) ◽  
pp. 608-610 ◽  
Author(s):  
Gui You-Zhen ◽  
Han Zheng-Fu ◽  
Mo Xiao-Fan ◽  
Guo Guang-Can
Keyword(s):  
Optical Fibre ◽  
Quantum Key Distribution ◽  
Key Distribution

scholarly journals Demonstration of provably secure quantum key distribution (QKD)

2018 ◽  
Author(s):  
Ronald Sadlier ◽  
Travis S. Humble ◽  
Venkateswara R. Dasari ◽  
Billy E. Geerhart
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Provably Secure

scholarly journals Towards polarisation-encoded quantum key distribution in optical fibre networks

2015 ◽  
Vol 111 (7/8) ◽  
Author(s):  
Sharmini Pillay ◽  
◽  
Abdul Mirza ◽  
Francesco Petruccione ◽  
◽  
...  
Keyword(s):  
Optical Fibre ◽  
Quantum Key Distribution ◽  
Key Distribution

Quantum key distribution over a 48km optical fibre network

2000 ◽  
Vol 47 (2-3) ◽  
pp. 533-547 ◽  
Author(s):  
Richard J. Hughes ◽  
George L. Morgan ◽  
C. Glen Peterson
Keyword(s):  
Optical Fibre ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Fibre Network

scholarly journals Security of quantum key distribution using weak coherent states with nonrandom phases

2007 ◽  
Vol 7 (5&6) ◽  
pp. 431-458
Author(s):  
H.-K. Lo ◽  
J. Preskill
Keyword(s):  
Coherent State ◽  
Quantum Key Distribution ◽  
Relative Phase ◽  
Key Distribution ◽  
Signal Pulse ◽  
Key Generation ◽  
Photon Polarization ◽  
Reference Pulse ◽  
State Reference ◽  
Provably Secure

We prove the security of the Bennett-Brassard (BB84) quantum key distribution protocol in the case where the key information is encoded in the relative phase of a coherent-state reference pulse and a weak coherent-state signal pulse, as in some practical implementations of the protocol. In contrast to previous work, our proof applies even if the eavesdropper knows the phase of the reference pulse, provided that this phase is not modulated by the source, and even if the reference pulse is bright. The proof also applies to the case where the key is encoded in the photon polarization of a weak coherent-state pulse with a known phase, but only if the phases of the four BB84 signal states are judiciously chosen. The achievable key generation rate scales quadratically with the transmission in the channel, just as for BB84 with phase-randomized weak coherent-state signals (when decoy states are not used). For the case where the phase of the reference pulse is strongly modulated by the source, we exhibit an explicit attack that allows the eavesdropper to learn every key bit in a parameter regime where a protocol using phase-randomized signals is provably secure.

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