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quant-ph2023★ 1 cited
Computing Quantum Mean Values in the Deep Chaotic Regime
Gabriel M. Lando, Olivier Giraud, Denis Ullmo
We study the time evolution of mean values of quantum operators in a regime plagued by two difficulties: The smallness of and the presence of strong and ubiquitous classica…
quant-ph2023
Quantum parameter estimation with many-body fermionic systems and application to the Hall effect
Olivier Giraud, Mark-Oliver Goerbig, Daniel Braun
We calculate the quantum Fisher information for a generic many-body fermionic system in a pure state depending on a parameter. We discuss the situations where the parameter is impr…