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On the Analytical Derivation of Quantum Fisher Information and Skew Information for two Qubit X States |
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| Authors: | Maroufi B Laghmach R EL Hadfi H Daoud M |
| Institution: | 1.LPMC, Department of Physics, Faculty of Sciences Ben M’Sick, University Hassan II, Casablanca, Morocco ;2.LPHE-Modeling and Simulation, Faculty of Sciences, University Mohammed V, Rabat, Morocco ;3.Department of Physics, Faculty of Sciences, University Ibn Tofail, Kenitra, Morocco ;4.Abdus Salam International Centre for Theoretical physics, Trieste,, Italy ; |
| Abstract: | The quantum Fisher information defined via the symmetric logarithmic derivative and the skew information are two different aspects describing the information contents of quantum mechanical density operators. They are considered as natural generalizations of the classical Fisher information and constitute key ingredients in the emerging field of quantum metrology. In this paper, we give the analytical expression of quantum Fisher information and skew information for two-qubit system prepared in a two-qubit state of X type. |
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