193 citations · 249 across the 6 of their papers we have counts for
5 papers · 1 filter
Classical approach to equilibrium of out-of-time ordered correlators in mixed systems
Tomás Notenson, Ignacio García-Mata, Augusto J. Roncaglia +1
The out-of-time ordered correlator (OTOC) is a measure of scrambling of quantum information. Scrambling is intuitively considered to be a significant feature of chaotic systems and…
Comment on "Exploring chaos in the Dicke model using ground-state fidelity and the Loschmidt echo"
I. García-Mata, A. J. Roncaglia, D. A. Wisniacki
In [PRE \textbf{90}, 022920 (2014), arXiv:1404.6738] a study of the ground state fidelity of the Dicke model as a function of the coupling parameter is presented. Abrupt jumps of t…
Work measurement as a generalized quantum measurement
Augusto J. Roncaglia, Federico Cerisola, Juan Pablo Paz
We present a new method to measure the work performed on a driven quantum system and to sample its probability distribution . The method is based on a simple fact that re…
Relaxation of isolated quantum systems beyond chaos
Ignacio García-Mata, Augusto J. Roncaglia, Diego A. Wisniacki
In classical statistical mechanics there is a clear correlation between relaxation to equilibrium and chaos. In contrast, for isolated quantum systems this relation is -- to say th…
Gapped Two-Body Hamiltonian for continuous-variable quantum computation
Leandro Aolita, Augusto J. Roncaglia, Alessandro Ferraro +1
We introduce a family of Hamiltonian systems for measurement-based quantum computation with continuous variables. The Hamiltonians (i) are quadratic, and therefore two body, (ii) a…