Cryptographie quantique dans un contexte satellitaire

[invite6754323456711]

Bonjour,

Quelqu'un serait-il si il existe des travaux sur l'applicabilité de la cryptographie quantique (difusion de clé quantique) sur un accès radio satellite ?

Ou cela n'est possible que pour des transmissions optiques en espace libre ?

Merci
Patrick
-----

[invite6754323456711]

Bonjour,

European experimental plan for quantum communications using the International Space Station :

Europe is conducting long- distance field tests of quantum cryptography communcations using open space propagation on the ground. Professor Zeilinger of the University of Vienna (Austria) and his group performed open space propagation experiments to test the entanglement of quanta using optical ground stations (OGS) of the European Space Agency (ESA) in the open space Between La Palma Island and Tenerife Island ( both are par t of the Spanish Canar y Islands), which are 144 km apart. To verify the results of the ground experiments over a longer distance, the group is planning a quantum cryptography communications mission called "SPACEQUEST" in outer space. A transmitter will be installed on the International Space Station and experiments on quantum communications in space over a distance of more than 1,600 km between the Space Station and the ground will be conducted. This project has received high praise from ESA. It is scheduled to launch the equipment containing two optical terminals made by Contraves of Switzerland around 2011 at latest.

http://www.quantum.at/research/quant...for-space.html
http://www.quantum.at/uploads/media/SPACE_QUEST.pdf

Les principes physiques utilisés dans la cryptographie quantique pourront-il s'appliquer aux formes d'ondes radio (bande Ka par exemple) ? Ou c'est un non sens ?

Il semble aussi exister une autre approche technologique basée sur la physique du chaos : la cryptographie par chaos (Onde bruité, bruit déterministe)


Patrick