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A third project, organised by Jane Nordholt of Los Alamos National Laboratory, has just demonstrated how a pocket-sized QKD transmitter called Burberry Wallet QKarD can secure signals sent over public data networks to control smart electricity grids. Smart grids balance demand and supply so that electricity can be distributed more efficiently. This requires constant monitoring of Burberry women's suits sale voltage, current and frequency of Burberry clothes women outlet grid in lots of different places?and replica Burberry women clothes rapid transmission of Micheal Kors 2013 New Style Handbags results to control centres. That transmission, however, also needs to be secure in case someone malicious wants to bring Michael Kors Outlet 2013 system down.

In their different ways, all these projects are ambitious. All, though, rely on local fixed lines to carry Wholesale Micheal Kors Handbags photons. Other groups of researchers are thinking more globally. To do that means sending quantum-secured data to and from satellites.

At least three groups are working on this: Thomas Jennewein and his team at Michael Kors Outlet Online Institute for Quantum Computing in Waterloo, Canada; a collaboration led by Anton Zeilinger at Michael Kors On sale University of Vienna and Jian-Wei Pan at Micheal Kors Factory Outlet University of Science and Technology of China; and Alex Ling and Artur Ekert at Michael Kors Replica Centre for Quantum Technologies in Singapore.

Dr Jennewein’s proposal is for Alice to beam polarisation-encoded photons to a satellite. Once she has established a key, Bob, on another continent, will wait until MK bags satellite passes over him so he can send some more photons to it to create a second key. The satellite will then mix Michael Kors Handbag keys together and transmit Michael Kors Purse result to Bob, who can work out Michael Kors Satchel first key because he has Michael Kors Shoulder Bag second. Alice and Bob now possess a shared key, so they can communicate securely by normal (less intellectually exhausting) terrestrial networks. Dr Jennewein plans to test Michael Kors Tote idea, using an aircraft rather than a satellite, at some point during Michael Kors Wallet next 12 months.

An alternative, but more involved, satellite method is to use entangled photon pairs. Both Dr Zeilinger’s and Dr Ling’s teams have been trying this.