The quantum Fisher information is a central quantity in quantum metrology and is the quantum analogue of the classical Fisher information. It is one of...

mathematical statistics, the Fisher information (sometimes simply called information) is a way of measuring the amount of information that an observable random...

terms of mixed states, it is the quantum Bures metric. Considered purely as a matrix, it is known as the Fisher information matrix. Considered as a measurement...

F Q [ ϱ , H ] {\displaystyle F_{\rm {Q}}[\varrho ,H]} is the quantum Fisher information. Here, ϱ {\displaystyle \varrho } is the state of the system and...

between density matrix operators defining quantum states. It is a quantum generalization of the Fisher information metric, and is identical to the Fubini–Study...

F Q [ ϱ , H ] {\displaystyle F_{\rm {Q}}[\varrho ,H]} is the quantum Fisher information. One example of note is the use of the NOON state in a Mach–Zehnder...

where F Q [ ϱ , B ] {\displaystyle F_{Q}[\varrho ,B]} denotes the quantum Fisher information and the density matrix is decomposed to pure states as ϱ = ∑ k...

logarithmic derivative is an important quantity in quantum metrology, and is related to the quantum Fisher information. Let ρ {\displaystyle \rho } and A {\displaystyle...

sufficiency in quantum statistical inference, quantum Fisher information, and the related concept of monotone metrics in quantum information geometry. He...

distributions. Historically, information geometry can be traced back to the work of C. R. Rao, who was the first to treat the Fisher matrix as a Riemannian...