Navigation Links
Researchers unite to distribute quantum keys
Date:7/2/2009

Researchers from across Europe have united to build the largest quantum key distribution network ever built. The efforts of 41 research and industrial organisations were realised as secure, quantum encrypted information was sent over an eight node, mesh network.

With an average link length of 20 to 30 kilometres, and the longest link being 83 kilometres, the researchers from organisations such as the AIT Austrian Institute of Technology (formerly Austrian Research Centers), id Quantique, Toshiba Research in the UK, Universit de Genve, the University of Vienna, CNRS, Thales, LMU Munich, Siemens, and many more have broken all previous records and taken another huge stride towards practical implementation of secure, quantum-encrypted communication networks.

A journal paper, 'The SECOQC Key Distribution Network in Vienna', published as part of IOP Publishing's New Journal of Physics' Focus Issue on 'Quantum Cryptography: Theory and Practice', illustrates the operation of the network and gives an initial estimate for transmission capacity (the maximum amount of keys that can be exchanged on a quantum key distribution, QKD, network).

Undertaken in late 2008, using the company internal glass fibre ring of Siemens and 4 of its dependencies across Vienna plus a repeater station, near St. Plten in Lower Austria, the QKD demonstration involved secure telephone communication and video-conference as well as a rerouting experiment which demonstrated the functionality of the SEcure COmmunication network based on Quantum Cryptography (SECOQC).

One of the first practical applications to emerge from advances in the sometimes baffling study of quantum mechanics, quantum cryptography has become a soon-to-be reached benchmark in secure communications.

Quantum mechanics describes the fundamental nature of matter at the atomic level and offers very intriguing, often counter-intuitive, explanations to help us understand the building blocks that construct the world around us. Quantum cryptography uses the quantum mechanical behaviour of photons, the fundamental particles of light, to enable highly secure transmission of data beyond that achievable by classical methods.

The photons themselves are used to distribute cryptographic key to access encrypted information, such as a highly sensitive transaction file that, say, a bank wishes to keep completely confidential, which can be sent along practical communication lines, made of fibre optics. Quantum indeterminacy, the quantum mechanics dictum which states that measuring an unknown quantum state will change it, means that the information cannot be accessed by a third party without corrupting it beyond recovery and therefore making the act of hacking futile.

The researchers write, "In our paper we have put forward, for the first time, a systematic design that allows unrestricted scalability and interoperability of QKD technologies."


'/>"/>

Contact: Joseph Winters
joseph.winters@iop.org
44-020-747-04815
Institute of Physics
Source:Eurekalert

Related biology technology :

1. Researchers improve ability to write and store information on electronic devices
2. Long-awaited international ethical guidelines for biobank researchers
3. CU researchers shed light on light-emitting nanodevice
4. Stevens researchers provide new information about mass spectrometry
5. Researchers measure carbon nanotube interaction
6. Researchers underscore limitations of genetic ancestry tests
7. ASU researchers improve memory devices using nanotech
8. UD researchers race ahead with latest spintronics achievement
9. Researchers outline structure of largest nonvirus particle ever crystallized
10. Ames Laboratory researchers solve fuel-cell membrane structure conundrum
11. Researchers use magnetism to target cells to animal arteries
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/11/2016)... 11, 2016 Non-profit Consortium Aims to ... to Support Research and Discovery --> ... an ambitious plan to sequence 100,000 individuals. It is intended ... at least 7 of North and East Asian countries. ... phase, the project will focus on creating phased reference genomes ...
(Date:2/11/2016)... NEW YORK , Feb. 11, 2016  Bioethics International, ... how medicines are researched, developed, marketed and made accessible to ... BMJ Open had named the publication of the ... for 2015. The publication is also featured as one of ... published in the last year that are most frequently read. ...
(Date:2/11/2016)... Feb. 11, 2016  Dovetail Genomics™ LLC today announced ... program for a planned metagenomic genome assembly service. ... metagenomic genome assembly method in a talk on Friday, ... & Technology conference in Orlando, Fla. ... complex datasets is difficult. Using its proprietary ...
(Date:2/11/2016)... ... February 11, 2016 , ... Global Stem Cells Group, ... Bankok,Thailand-based Global Stem Cells Network (GSCN) to distribute exosome injection and other biological ... Mexico, Costa Rica, Dominican Republic, Colombia, Argentina, Nicaragua, Panama, El Salvador, Venezuela, Peru, ...
Breaking Biology Technology:
(Date:2/10/2016)... India , February 10, 2016 /PRNewswire/ ... --> According to 2016 iris recognition ... identification iris recognition is more widely accepted ... available with both fingerprint and iris recognition ... the user to avoid purchasing two individual ...
(Date:2/4/2016)... , Feb. 4, 2016 The ... apparently one of the most popular hubs of ... MetaHIT and other huge studies of human microbiota, ... past few years, the microbiome space has literally ... biomedical research. This report focuses on biomedical ...
(Date:2/2/2016)... YORK , Feb. 2, 2016 /PRNewswire/ ... facilities are primarily focused on medical screening ... measure point-of-care parameters. Wearable devices that facilitate ... user,s freedom of movement are being bolstered ... for human biomedical signal acquisition coupled with ...
Breaking Biology News(10 mins):