Physicists Create First Long-Distance Quantum Link
In an ordinary computer network, data in the form of binary numbers are transferred from one machine (node) to another via some sort of electronic signal, either electrical or optical. The success of this transfer comes when the recipient has precisely the same set of binary figures that were sent. In a quantum network, the "data" is a quantum state—the particular configuration of an atom's energy, spin, etc.—and the transfer of information is successful if the state is reproduced in a separate quantum system some distance away. Extant quantum networks are capable of either receiving or sending signals, but not both simultaneously. A new experiment reported by Stephan Ritter et al. in Nature has achieved a simple two-node quantum network, in which a single photon successfully transferred the spin state of one rubidium atom to a second atom 21 meters away. Since the nodes are identical, both being rubidium atoms, signals are bi-directional. This type of quantum network should be scalable to encom
Researchers in Germany have built the first true quantum link using two widely separate atoms -- a connection that could be repeated to construct construct a fully functional quantum computing ...
Thu 12 Apr 12 from Wired Science
Physicists Create First Long-Distance Quantum Link, Wed 11 Apr 12 from Science Now
Physicists demonstrate a scalable quantum network that ought to be adaptable for long-distance quantum communication.
Thu 12 Apr 12 from Nature News
(Phys.org) -- A team of scientists at the Max Planck Institute of Quantum Optics realizes a first elementary quantum network based on interfaces between single atoms and photons.
Wed 11 Apr 12 from Phys.org
Two-node quantum information network is a step toward completely secure communication
Wed 11 Apr 12 from IEEE Spectrum
Physicists have built the first two nodes of a quantum network.
Thu 12 Apr 12 from Discovery News
Quantum technology is the future, no doubt. The impact of computing devices based on quantum effects finally entering service would be vast and of immense positive consequence to the scientific ...
Thu 12 Apr 12 from ZME Science
German scientists at the Max Planck Institute of Quantum Optics have created the first quantum network that could be feasibly scaled up to become a "quantum internet."
Thu 12 Apr 12 from Extremetech
In an ordinary computer network, data in the form of binary numbers are transferred from one machine (node) to another via some sort of electronic signal, either electrical or optical. The success ...
Wed 11 Apr 12 from Arstechnica
Brett Smith for Redorbit.com Quantum physicists have made a leap forward in subatomic particle communication by connecting two separate labs 21-meters apart using two atoms and a photon, according ...
Thu 12 Apr 12 from RedOrbit