# Full characterization of Gaussian bipartite entangled states by a single homodyne detector.

@article{DAuria2009FullCO, title={Full characterization of Gaussian bipartite entangled states by a single homodyne detector.}, author={Virginia D'Auria and Stefano Fornaro and Alberto Porzio and S. Solimeno and Stefano Olivares and Matteo G. A. Paris}, journal={Physical review letters}, year={2009}, volume={102 2}, pages={ 020502 } }

We present the full experimental reconstruction of Gaussian entangled states generated by a type-II optical parametric oscillator below threshold. Our scheme provides the entire covariance matrix using a single homodyne detector and allows for the complete characterization of bipartite Gaussian states, including the evaluation of purity, entanglement, and nonclassical photon correlations, without a priori assumptions on the state under investigation. Our results show that single homodyne…

## 94 Citations

### Full characterization of bipartite entangled states by means of a single homodyne detector

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