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We develop the minimal requirements for the complete entanglementquantification of an arbitrary two-mode bipartite Gaussian state via localmeasurements and a classical communication channel. The minimal set ofmeasurements is presented as a reconstruction protocol of local covariancematrices and no previous knowledge of the state is required but its Gaussiancharacter. The protocol becomes very simple mostly when dealing with Gaussianstates transformed to its standard form, since photocounting/intensitymeasurements define the whole set of entangled states. In addition, conditionedon some prior information, the protocol is also useful for a complete globalstate reconstruction.Comment: 5 pages, 1 figure. Replaced with final published versio

physical review letters

Erratum: Minimal Set of Local Measurements and Classical Communication for Two-Mode Gaussian State Entanglement Quantification [Phys. Rev. Lett.<b>98</b>, 150501 (2007)]

Erratum: Minimal Set of Local Measurements and Classical Communication for Two-Mode Gaussian State Entanglement Quantification [Phys. Rev. Lett.98, 150501 (2007)]