Entanglement is the central resource of quantum information processing and the precise characteriza-tion of entangled states is a crucial issue for the development of quantum technologies. This leads to the necessity of a precise, experimental feasible measure of entanglement. Nevertheless, such measurements are limited both from experimental uncertainties and intrinsic quantum bounds. Here we present an experiment where the amount of entanglement of a family of two-qubit mixed photon states is estimated with the ultimate precision allowed by quantum mechanics.
Experimental estimation of entanglement at the quantum limit / G. Brida, I. Degiovanni, A. Florio, M. Genovese, P. Giorda, A. Meda, M. Paris, A. Shurupov. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 104:10(2010), pp. 100501.100501.1-100501.100501.4. [10.1103/PhysRevLett.104.100501]
Experimental estimation of entanglement at the quantum limit
M. ParisPenultimo
;
2010
Abstract
Entanglement is the central resource of quantum information processing and the precise characteriza-tion of entangled states is a crucial issue for the development of quantum technologies. This leads to the necessity of a precise, experimental feasible measure of entanglement. Nevertheless, such measurements are limited both from experimental uncertainties and intrinsic quantum bounds. Here we present an experiment where the amount of entanglement of a family of two-qubit mixed photon states is estimated with the ultimate precision allowed by quantum mechanics.File | Dimensione | Formato | |
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