Measuring entanglement in condensed matter systems.
@article{Cramer2011MeasuringEI, title={Measuring entanglement in condensed matter systems.}, author={Marcus Cramer and Martin Bodo Plenio and Harald Wunderlich}, journal={Physical review letters}, year={2011}, volume={106 2}, pages={ 020401 } }
We show how entanglement may be quantified in spin and cold atom many-body systems using standard experimental techniques only. The scheme requires no assumptions on the state in the laboratory, and a lower bound to the entanglement can be read off directly from the scattering cross section of neutrons deflected from solid state samples or the time-of-flight distribution of cold atoms in optical lattices, respectively. This removes a major obstacle which so far has prevented the direct and…
52 Citations
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