quantum cryptography
Second Workshop on Theory and Realisation of Practical Quantum Key Distribution
Quantum Information and Technologies in Madrid
Location
Quitemad is a consortium of five groups working in different aspects of QIPC in the region of Madrid. This project is a four year coordinated action funded by the regional goverment. Apart from research in technological and theoretical aspects of of quantum information theory, the consortium is strongly devoted to the development of a four year program of activities, such as workshops, conferences, seminars and scientific exchange between local and international groups.
Photon echoes may extend quantum transmission distances
Quantum cryptography is a promising new way to send encrypted information. This new technology does suffer from some drawbacks. One of the toughest problems is the range that information can be sent is limited to around 50-100 km. Advancements have been underway. The most promising advancement is being working on by a team based out of the Australian National University. They found a way to store and manipulate photons to be used as a memory device.
Reality vs security
New results in quantum cryptography show that the original protocol based on Bell's inequality is so powerful that it extends beyond the quantum realm. In the recent issue of Physics World Artur Ekert traces it all back to Einstein's considerations about physical reality.
Worldwide quantum security
A team of physicists from Austria has sent pairs of entangled photons, which can be used to encrypt messages with complete security, between telescopes spaced 144km apart in the Canary Islands. The researchers say that preserving entanglement over this distance shows the feasibility of carrying out quantum cryptography using a worldwide network of satellites.
Laboratory of Quantum Information Processing and Cryptography
Location
Laboratory of Quantum Information Processing and Cryptography was founded in Autumn of 2004. Research in Laboratory is aimed especially on information aspects of quantum information processing, in particular quantum cryptography, information theory, quantum communication and algorithms. Theoretical aspects of classical cryptography, especially problems solvable with security that can be proved with help of information theory, are studied as well.
Quantum Technology at Queens
Location
Quantum Technology at Queens (QTeQ) researches into the field of quantum information processing and quantum optics applications.
