313 citations · 421 across the 2 of their papers we have counts for
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Dynamical phases for the evolution of the entanglement between two oscillators coupled to the same environment
Juan Pablo Paz, Augusto J. Roncaglia
We study the dynamics of the entanglement between two oscillators that are initially prepared in a general two-mode Gaussian state and evolve while coupled to the same environment.…
Dynamics of the entanglement between two oscillators in the same environment
Juan Pablo Paz, Augusto J. Roncaglia
We provide a complete characterization of the evolution of entanglement between two oscillators coupled to a common environment. For initial Gaussian states we identify three phase…
Qubits in phase space: Wigner function approach to quantum error correction and the mean king problem
Juan Pablo Paz, Augusto Jose Roncaglia, Marcos Saraceno
We analyze and further develop a new method to represent the quantum state of a system of qubits in a phase space grid of points (where ). The method, which…
Quantum algorithms for phase space tomography
Juan Pablo Paz, Augusto J. Roncaglia, Marcos Saraceno
We present efficient circuits that can be used for the phase space tomography of quantum states. The circuits evaluate individual values or selected averages of the Wigner, Kirkwoo…
A quantum gate array can be programmed to evaluate the expectation value of any operator
Juan Pablo Paz, Augusto Roncaglia
A programmable gate array is a circuit whose action is controlled by input data. In this letter we describe a special--purpose quantum circuit that can be programmed to evaluate th…