4 papers
In and out of equilibrium quantum metrology with mean-field quantum criticality
Sascha Wald, Saulo V. Moreira, Fernando L. Semião
We study the influence that collective transition phenomena have on quantum metrological protocols. The single spherical quantum spin (SQS) serves as stereotypical toy model that a…
Enhancing quantum transport efficiency by tuning non-Markovian dephasing
Saulo V. Moreira, Breno Marques, Rafael R. Paiva +3
We consider the problem of energy transport in a chain of coupled dissipative quantum systems in the presence of non-Markovian dephasing. We use a model of non-Markovianity which i…
Investigating nonclassicality in nonlinear electronic spectroscopy
Saulo V. Moreira, Fernando L. Semião
In this work, we establish a connection between nonlinear electronic spectroscopy and the protocol for the non-disturbance condition, the non-fullfilment of which is a witness of n…
Quantifying quantum invasiveness
Saulo V. Moreira, Marcelo Terra Cunha
We propose a resource theory of the quantum invasiveness of general quantum operations, i.e., those defined by quantum channels in Leggett-Garg scenarios. We are then able to compa…