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Use of discrete modulation and a continuous wave local oscillator in a 24 km continuous variable quantum key distribution system
Quantum cryptography Quantum communications
2015/6/10
We implement an experimental continuous variable quantum key distribution system over 24 km of optical fiber that uses discrete signaling and a continuous wave local oscillator. A secure key rate of 3...
Passive Decoy State Quantum Key Distribution with Coherent Light
Quantum communications Quantum cryptography Photon statistics.
2015/6/9
We propose a simple method for passive preparation of decoy states in quantum key distribution with coherent light. It involves linear optics together with a photo-detector. The performance is compara...
Node Modules and Protocols for the Quantum-Back-Bone of a Quantum-Key-Distribution Network
Node Modules Quantum-Back-Bone Quantum-Key-Distribution Network
2015/7/17
The very recent demonstration of the SECOQC QKD-network convincingly extended single QKD-links to QKD-networks gaining new functionalities. The needed interfaces, protocols and node modules are explai...
Gigahertz Clocked Quantum Key Distribution System using FPGA
Gigahertz Clocked Quantum Key Distribution System FPGA
2015/7/17
An implementation of 1-GHz clocked differential-phase-shift quantum key distribution system is reported.High speed signal generation and its storage were realized by using FPGA. A stable operation was...