Fidelity serves as a benchmark for the reliability in quantum information processes, and has
recently attracted much interest as a measure of the susceptibility of dynamics to …

In this review we summarize and amplify recent investigations of coupled quantum
dynamical systems with few degrees of freedom in the short-wavelength, semiclassical limit …

arxiv:1206.6348v1 [nlin.CD] 27 Jun 2012 Page 1 arxiv:1206.6348v1 [nlin.CD] 27 Jun 2012
Loschmidt Echo Arseni Goussev1, Rodolfo A. Jalabert2, Horacio M. Pastawski3, and Diego …

Decoherence causes entropy increase that can be quantified using, eg, the purity ς= T r ρ 2.
When the Hamiltonian of a quantum system is perturbed, its sensitivity to such perturbation …

A universal relation is established between the quantum work probability distribution of an
isolated driven quantum system and the Loschmidt echo dynamics of a two-mode squeezed …

The Loschmidt echo (LE) is a magnitude that measures the sensitivity of quantum dynamics
to perturbations in the Hamiltonian. For a certain regime of the parameters, the LE decays …

In this paper we review our recent work on the theoretical approach to quantum Loschmidt
echoes, ie, various properties of the so-called echo dynamics–the composition of forward …

We present a numerically feasible semiclassical (SC) method to evaluate quantum fidelity
decay (Loschmidt echo) in a classically chaotic system. It was thought that such evaluation …

Ferralsols under native vegetation have a weak to moderate macrostructure and a well-
developed microstructure corresponding to subrounded microaggregates that are usually 80 …

A general semiclassical expression for quantum fidelity (Loschmidt echo) of arbitrary pure
and mixed states is derived. It expresses fidelity as an interference sum of dephasing …