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On the Analytical Derivation of Quantum Fisher Information and Skew Information for two Qubit X States
- Source :
- International Journal of Theoretical Physics. 60:3103-3114
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
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.
Details
- ISSN :
- 15729575 and 00207748
- Volume :
- 60
- Database :
- OpenAIRE
- Journal :
- International Journal of Theoretical Physics
- Accession number :
- edsair.doi...........d4c871d4543c8aecfcb5e2398cc9271a