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Light Changed to Matter, Then Stopped and Moved

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CAMBRIDGE, Mass., Feb. 8, 2007 -- By converting light into matter and then back again, physicists have for the first time stopped a light pulse and then restarted it a small distance away. This "quantum mechanical magic trick" provides unprecedented control over light and could have applications in fiber-optic communication and quantum information processing.Harvard University professor Lene Hau explains how she stops light in one place then retrieves and speeds it up in a completely separate place. (Photo: Justin Ide/Harvard News Office) In quantum networks, information optically transmitted over the network is converted...Read full article

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