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arXiv · 1912.12313

Symmetric Logarithmic Derivative of Fermionic Gaussian States

Angelo Carollo·Bernardo Spagnolo·Davide Valenti
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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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Angelo Carollo, Bernardo Spagnolo, Davide Valenti. 2019-12-27. Symmetric Logarithmic Derivative of Fermionic Gaussian States. https://doi.org/10.3390/e20070485

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