Symmetric logarithmic derivative of Fermionic Gaussian states
- Authors: Carollo, Angelo; Spagnolo, Bernardo; Valenti, Davide
- Publication year: 2018
- Type: Articolo in rivista (Articolo in rivista)
- OA Link: http://hdl.handle.net/10447/295210
Abstract
In this article, we derive a closed form expression for the symmetric logarithmic derivative of Fermionic Gaussian states. This provides a direct way of computing the quantum Fisher Information for Fermionic Gaussian states. Applications range from quantum Metrology with thermal states to non-equilibrium steady states with Fermionic many-body systems.