100 citations · 296 across the 10 of their papers we have counts for
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Time Reversal Mirror and Perfect Inverse Filter in a Microscopic Model for Sound Propagation
Hernan L. Calvo, Ernesto P. Danieli, Horacio M. Pastawski
Time reversal of quantum dynamics can be achieved by a global change of the Hamiltonian sign (a hasty Loschmidt daemon), as in the Loschmidt Echo experiments in NMR, or by a local…
Decoherence under many-body system-environment interactions: a stroboscopic representation based on a fictitiously homogenized interaction rate
Gonzalo A. Alvarez, Ernesto P. Danieli, Patricia R. Levstein +1
An environment interacting with portions of a system leads to multiexponential interaction rates. Within the Keldysh formalism, we fictitiously homogenize the system-environment in…
Quantum dynamical phase transition in a system with many-body interactions
Ernesto P. Danieli, Gonzalo A. Alvarez, Patricia R. Levstein +1
We introduce a microscopic Hamiltonian model of a two level system with many-body interactions with an environment whose excitation dynamics is fully solved within the Keldysh form…
Environmentally induced Quantum Dynamical Phase Transition in the spin swapping operation
Gonzalo Agustin Alvarez, Ernesto Pablo Danieli, Patricia Rebeca Levstein +1
Quantum Information Processing relies on coherent quantum dynamics for a precise control of its basic operations. A swapping gate in a two-spin system exchanges the degenerate stat…
Quantum dynamics under coherent and incoherent effects of a spin bath in the Keldysh formalism: application to a spin swapping operation
Ernesto P. Danieli, Horacio M. Pastawski, Gonzalo A. Alvarez
We develop the Keldysh formalism for the polarization dynamics of an open spin system. We apply it to the swapping between two qubit states in a model describing an NMR cross-polar…
Spin projection chromatography
Ernesto P. Danieli, Horacio M. Pastawski, Patricia R. Levstein
We formulate the many-body spin dynamics at high temperature within the non-equilibrium Keldysh formalism. For the simplest XY interaction, analytical expressions in terms of the o…