In the context of multiparameter quantum estimation theory. we investigate the construction of linear schemes in order to infer two classical parameters that are encoded in the quadratures of two quantum coherent states. The optimality of the scheme built on two phase-conjugate coherent states is proven with the saturation of the quantum Cramér−Rao bound under some global e... https://hollandscountryclothinges.shop/product-category/fly-fishing-wallets/