Symmetric Logarithmic Derivative of Fermionic Gaussian States

• URL: http://arxiv.org/abs/1912.12313v1
• Date: Fri, 27 Dec 2019 19:01:46 GMT
• Title: Symmetric Logarithmic Derivative of Fermionic Gaussian States
• Authors: Angelo Carollo, Bernardo Spagnolo and Davide Valenti
• Abstract summary: This provides a direct way of computing the quantum Fisher Information for Fermionic Gaussian states. Applications range from quantum Metrology with thermal states and non-equilibrium steady states with Fermionic many-body systems.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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 ranges from quantum Metrology with thermal states and non-equilibrium steady states with Fermionic many-body systems.

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