RESUMO
We report the observation of entanglement between a single trapped atom and a single photon at remote locations. The degree of coherence of the entangled atom-photon pair is verified via appropriate local correlation measurements, after communicating the photon via an optical fiber link of 300 m length to a receiver 3.5 m apart. In addition, we measured the temporal evolution of the atomic density matrix after projecting the atom via a state measurement of the photon onto several well-defined spin states. We find that the state of the single atom dephases on a time scale of 150 micros, which represents an important step towards long-distance quantum networking with individual neutral atoms.
RESUMO
A case of respiratory distress is reported following lung decortication. Of a 331/min applied respiratory volume 90% was lost due to the multiple alveolar leakage. The lung could be inflated only when the chest was closed and several Bülau drains with powerful suckers were inserted. When the lung surface came in contact with the chest wall, the lossof tidal volume could immediately be reduced and respiration was possible again.