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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:


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.