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12 papers · 2 filters
Experimental characterization of quantum processes: a selective and efficient method in arbitrary finite dimension
Quimey Pears Stefano, Ignacio Perito, Juan José Miguel Varga +2
The temporal evolution of a quantum system can be characterized by quantum process tomography, a complex task that consumes a number of physical resources scaling exponentially wit…
Characterization of non-signaling correlations from mutual information
Ignacio Perito, Guido Bellomo, Daniel Galicer +3
We present a characterization of the set of non-signaling correlations in terms of a two dimensional representation that involves the maximal value of a Bell functional and the mut…
K-GRAPE: A Krylov Subspace approach for the efficient control of quantum many-body dynamics
Martin Larocca, Diego Wisniacki
The Gradient Ascent Pulse Engineering (GRAPE) is a celebrated control algorithm with excellent converging rates, owing to a piece-wise-constant ansatz for the control function that…
Gamow vectors formalism applied to the Loschmidt echo
Sebastian Fortin, Manuel Gadella, Federico Holik +1
Gamow vectors have been developed in order to give a mathematical description for quantum decay phenomena. Mainly, they have been applied to radioactive phenomena, scattering and t…
Quantum chaos, equilibration and control in extremely short spin chains
Nicolás Mirkin, Diego Wisniacki
The environment of an open quantum system is usually modelled as a large many-body quantum system. However, when an isolated quantum system itself is a many-body quantum system, th…
Determination of spatial quantum states by using Point Diffraction Interferometry
Quimey Pears Stefano, Lorena Rebón, Claudio Iemmi
We present a method to reconstruct pure spatial qudits of arbitrary dimension , which is based on a point diffraction interferometer. In the proposed scheme, the quantum states…