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- N. Gisin, H. Zbinden
- Physics, Computer ScienceOptical Fiber Communications Conference and…
- 27 March 2007
World specialists will talk about reliability tests in quantum networks; about quantum hacking, its importance and limitations, and its role in classical and quantum cryptography; about high rate and about low cost QKD systems; about free space quantum communication; and about future quantum repeaters for continental scale quantum communication.
The SECOQC quantum key distribution network in Vienna
- M. Peev, C. Pacher, A. Zeilinger
- Computer Science35th European Conference on Optical Communication
- 22 March 2009
The paper presents the architecture and functionality of the principal networking agent—the SECOQC node module, which enables the authentic classical communication required for key distillation, manages the generated key material, determines a communication path between any destinations in the network, and realizes end-to-end secure transport of key material between these destinations.
Quantum key distribution over 67 km with a plug&play system
We present a fibre-optical quantum key distribution system. It works at 1550 nm and is based on the plug&play set-up. We tested the stability under field conditions using aerial and terrestrial…
Concise security bounds for practical decoy-state quantum key distribution
This work provides concise and tight finite-key security bounds for practical decoy-state QKD that are valid against general attacks.
Violation of Bell Inequalities by Photons More Than 10 km Apart
A Franson-type test of Bell inequalities by photons 10.9 km apart is presented. Energy-time entangled photon pairs are measured using two-channel analyzers, leading to a violation of the inequalities…
Optical quantum random number generator
Abstract A physical random number generator based on the intrinsic randomness of quantum mechanics is described. The random events are realized by the choice of single photons between the two outputs…
Quantum key distribution and 1 Gbps data encryption over a single fibre
This work performs quantum key distribution over a single fibre in the presence of four classical channels in a C-band dense wavelength division multiplexing (DWDM) configuration using a commercial QKD system, successfully distil secret keys over fibre spans of up to 50 km.
Testing the speed of ‘spooky action at a distance’
This work performed a Bell test over more than 24 hours between two villages separated by 18 km and approximately east–west oriented, with the source located precisely in the middle and continuously observed two-photon interferences well above the Bell inequality threshold.
Practical private database queries based on a quantum-key-distribution protocol
This work proposes to implement private queries based on a quantum-key-distribution protocol, with changes only in the classical postprocessing of the key, which makes the scheme both easy to implement and loss tolerant.
Photon counting for quantum key distribution with peltier cooled InGaAs/InP APDs
Abstract The performance of three types of InGaAs/InP avalanche photodiodes is investigated for photon counting at 1550 nm in the temperature range of thermoelectric cooling. The best one yields a…