A fleeting pulse of light has been captured and then made to reappear in a different location by US physicists.
The quantum sleight of hand exploits the properties of super-cooled matter known as a Bose-Einstein condensate.
The emerging pulse was slightly weaker than the high-speed beam that entered the experimental setup, but was identical in all other respects.
The work, published in the journal Nature, could one day lead to advances in computing and optical communication.
"Instead of light shining through optical fibres into boxes full of wires and semiconductor chips, intact data, messages, and images will be read directly from the light," said Professor Lene Vestergaard Hau of Harvard University and one of the authors of the paper.
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