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Incompatibility in Multi-Parameter Quantum Metrology with Fermionic Gaussian States

  • Authors: Carollo, Angelo; Spagnolo, Bernardo; Valenti, Davide
  • Publication year: 2019
  • Type: Contributo in atti di convegno pubblicato in rivista
  • OA Link:


In this article we derive a closed form expression for the incompatibility condition in multi-parameter quantum metrology when the reference states are Fermionic Gaussian states. Together with the quantum Fisher information, the knowledge of the compatibility condition provides a way of designing optimal measurement strategies for multi-parameter quantum estimation. Applications range from quantum metrology with thermal states to non-equilibrium steady states with Fermionic and spin systems.