100 citations · 296 across the 10 of their papers we have counts for
10 papers
Perfect state transfers by selective quantum interferences within complex spin networks
Gonzalo A. Alvarez, Mor Mishkovsky, Ernesto P. Danieli +3
We present a method that implement directional, perfect state transfers within a branched spin network by exploiting quantum interferences in the time-domain. That provides a tool…
Decoherence as attenuation of mesoscopic echoes in a spin-chain channel
Gonzalo A. Alvarez, Ernesto P. Danieli, Patricia R. Levstein +1
An initial local excitation in a confined quantum system evolves exploring the whole system, returning to the initial position as a mesoscopic echo at the Heisenberg time. We consi…
Quantum parallelism as a tool for ensemble spin dynamics calculations
Gonzalo A. Alvarez, Ernesto P. Danieli, Patricia R. Levstein +1
Efficient simulations of quantum evolutions of spin-1/2 systems are relevant for ensemble quantum computation as well as in typical NMR experiments. We propose an efficient method…
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…