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Oldest Neolithic bow discovered in Europe Posted: 29 Jun 2012 11:24 AM PDT Researchers have discovered the oldest Neolithic bow in Europe at La Draga Neolithic site in Banyoles. The complete bow measures 108 cm long and was constructed of yew wood. |
First heralded single photon source made from silicon Posted: 28 Jun 2012 11:57 AM PDT In an important step towards more practical quantum information processing, researchers have built the first heralded single photon source made from silicon. This source complements two other recently developed silicon-based technologies needed to build a quantum optical circuit or a secure quantum communication system. |
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