313 citations · 740 across the 12 of their papers we have counts for
4 papers · 2 filters
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.…
Decoherence of Bell states by local interactions with a dynamic spin environment
Cecilia Cormick, Juan Pablo Paz
We study the evolution of a system of two qubits, each of which interacts locally with a spin chain with nontrivial internal Hamiltonian. We present an exact solution to this probl…
Selective Efficient Quantum Process Tomography
Ariel Bendersky, Fernando Pastawski, Juan Pablo Paz
We present a new method for quantum process tomography. The method enables us to efficiently estimate, with fixed precision, any of the parameters characterizing a quantum channel.…
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…