November 24, 2010

Proof of Concept Quantum Hard drives

EETimes - The California Institute of Technology has demonstrated that quantum entanglement can simultaneously transfer whole blocks of quantum information, providing a proof-of-concept for future quantum Hard Drives. The Caltech team claimed that its device is the harbinger of quantum Hard drives that someday may challenge traditional storage technologies with optical memories that use entanglement for access. In its demonstration, the team transferred the state of four quantum memories to an optical signal and back again, claiming that the principle could be extended to any number of parallel transfers into and out of future quantum Hard Drives.



Caltech's entanglement technique used lasers to cool the four quantum memories--each a collection of 1 million cesium atoms magnetically separated by 1 millimeter.

Next, the researchers want to study the dynamics of entanglement decay as applied to entangled spin waves in quantum magnetic memories. They also want to expand quantum "metrology" whereby quantum states can be generated, stored and transferred using measurements of the ordinarily fragile states of quantum memories.


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