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Coherent State Quantum Key Distribution with Continuous-Wave Laser Beams
Quantum optics Optical security encryption Quantum communications
2015/6/10
Continuous variable quantum key distribution relies on the transmission of weakly modulated coherent states and the detection of optical field for secure communication. In this talk, we give an overvi...
Quantum Key Distribution over Atomic-Ensemble Quantum Repeaters
Quantum communications Quantum cryptography
2015/6/10
The key generation rate for quantum key distribution systems that rely on quantum repeaters with atomic-ensemble memories is obtained. We find the cross-over distances at which quantum repeaters outpe...
Implementation of a High-Speed Quantum Key Distribution System for Metropolitan Networks
Quantum cryptography
2015/6/9
Improvement of QKD performance, particularly on key generation rate, has been required to meet current network traffic. A high-speed QKD system should be equipped with low loss receivers with high vis...
We demonstrate the first 10GHz clock-rate, differential-phase-shift-keyed quantum key distribution system on a 10Gb/s multi-user WDM-PON network. A dual feeder fiber scheme is used to reduce spontaneo...
Quantum Key Distribution offers the promise of secure communication at unprecedented security level. Secure systems can be implemented by standard optical communication components - if done right. We ...
Colourless Interferometric Technique for Large Capacity Quantum Key Distribution Systems by use of Wavelength Division Multiplexing
Colourless Interferometric Technique Large Capacity Quantum Key Distribution Systems Wavelength Division Multiplexing
2015/7/14
A novel interferometric technique is proposed for high-capacity quantum key distribution using wavelength division multiplexing. With additional phase modulation, we exhibited valid interference at an...