# Entangling power of passive optical elements.

@article{Wolf2002EntanglingPO, title={Entangling power of passive optical elements.}, author={Michael M. Wolf and Jens Eisert and Martin Bodo Plenio}, journal={Physical review letters}, year={2002}, volume={90 4}, pages={ 047904 } }

We investigate the entangling capability of passive optical elements, both qualitatively and quantitatively. We present a general necessary and sufficient condition for the possibility of creating distillable entanglement in an arbitrary multimode Gaussian state with the help of passive optical elements, thereby establishing a general connection between squeezing and the entanglement that is attainable by nonsqueezing operations. Special attention is devoted to general two-mode Gaussian states…

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