Kilometre-long pulses of light have been stored for over one second in a millimetre-sized cloud of ultracold atoms – before being revived and sent on their way. This latest demonstration of light storage using electromagnetically induced transparency (EIT) is the first to break the second barrier – and has the added bonus of preserving the quantum state of the incoming pulse. The physicists in the US who carried out the experiment say that the work could play a key role in quantum information technology.
Fonte: http://physicsworld.com/cws/article/news/41246
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