Experimental demonstration of counteracting imperfect sources in a practical one-way quantum-key-distribution system

2009 ◽  
Vol 80 (6) ◽  
Author(s):  
Fangxing Xu ◽  
Yang Zhang ◽  
Zheng Zhou ◽  
Wei Chen ◽  
Zhengfu Han ◽  
...  
Keyword(s):  
Distribution System ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Experimental Demonstration

scholarly journals Experimental demonstration of subcarrier multiplexed quantum key distribution system

2012 ◽  
Vol 37 (11) ◽  
pp. 2031 ◽  
Author(s):  
José Mora ◽  
Antonio Ruiz-Alba ◽  
Waldimar Amaya ◽  
Alfonso Martínez ◽  
Víctor García-Muñoz ◽  
...  
Keyword(s):  
Distribution System ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Experimental Demonstration

EXPERIMENTAL DEMONSTRATION OF THE PERFORMANCE OF QUANTUM KEY DISTRIBUTION SYSTEM AT 1550 nm

2005 ◽  
Vol 03 (03) ◽  
pp. 561-567 ◽  
Author(s):  
YOUZHEN GUI ◽  
XIAOFAN MO ◽  
ZHENGFU HAN ◽  
GUANGCAN GUO
Keyword(s):  
Bit Error Rate ◽  
Distribution System ◽  
Quantum Key Distribution ◽  
Experimental System ◽  
Key Distribution ◽  
Experimental Demonstration ◽  
Critical Factors ◽  
Quantum Bit ◽  
Transmission Length ◽  
The Relationship

We analyze some of the critical factors that confine the transmission length for a quantum key distribution system under a certain Quantum Bit Error Rate (QBER). Emphasis was placed on the relationship between transmission length and QBER. Relationships between the minimum QBER and transmission length in theory for ideal M–Z interferometers and for the real case in theory according to the parameters of our system are given. The relationship between them as obtained by experiment was also given. The results showed that our system is very close to the performance of an ideal experimental system.

scholarly journals Experimental demonstrations of unconditional security in a purely classical regime

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Byoung S. Ham
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Unconditional Security ◽  
Zehnder Interferometer ◽  
Experimental Demonstration ◽  
Orthogonal Bases ◽  
Unitary Transformations ◽  
Mach Zehnder Interferometer

AbstractSo far, unconditional security in key distribution processes has been confined to quantum key distribution (QKD) protocols based on the no-cloning theorem of nonorthogonal bases. Recently, a completely different approach, the unconditionally secured classical key distribution (USCKD), has been proposed for unconditional security in the purely classical regime. Unlike QKD, both classical channels and orthogonal bases are key ingredients in USCKD, where unconditional security is provided by deterministic randomness via path superposition-based reversible unitary transformations in a coupled Mach–Zehnder interferometer. Here, the first experimental demonstration of the USCKD protocol is presented.

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