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: http://hdl.handle.net/10447/368735
Abstract
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.