LAUSR

Loschmidt echo of far-from-equilibrium fermionic superfluids

Sign Up to like & get
recommendations!
0 Published in 2021 at "Annals of Physics"

DOI: 10.1016/j.aop.2021.168554

Abstract: Abstract Non-analyticities in the logarithm of the Loschmidt echo, known as dynamical quantum phase transitions [DQPTs], are a recently introduced attempt to classify the myriad of possible phenomena which can occur in far from equilibrium… read more here.

Keywords: echo far; far equilibrium; topology; loschmidt echo ... See more keywords

Quantum work statistics, Loschmidt echo and information scrambling

Sign Up to like & get
recommendations!
0 Published in 2018 at "Scientific Reports"

DOI: 10.1038/s41598-018-30982-w

Abstract: 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 state. When the initial density matrix is canonical, the… read more here.

Keywords: information scrambling; loschmidt echo; quantum work; work statistics ... See more keywords

Loschmidt echo of local dynamical processes in integrable and non integrable spin chains

Sign Up to like & get
recommendations!
0 Published in 2019 at "Journal of Physics A: Mathematical and Theoretical"

DOI: 10.1088/1751-8121/ab2ddb

Abstract: The Loschmidt echo is investigated to track the effect of the local QDP. It is also quite sensitive to whether the background dynamics is integrable or not. For the integrable case, viz. the Heisenberg model,… read more here.

Keywords: dynamical processes; loschmidt echo; non integrable; local dynamical ... See more keywords

Dynamics of coherence: Maximal quantum Fisher information versus Loschmidt echo

Sign Up to like & get
recommendations!
0 Published in 2020 at "Physical Review B"

DOI: 10.1103/physrevb.102.024304

Abstract: We consider the dynamics of maximal quantum Fisher information (MQFI) after sudden quenches for the one-dimensional transverse-field Ising model. Our results show, the same as Loschmidt echo, that there is a universality for the revival… read more here.

Keywords: quantum; quantum fisher; fisher information; maximal quantum ... See more keywords

Dynamical scaling laws in the quantum q -state clock chain

Sign Up to like & get
recommendations!
2 Published in 2023 at "Physical Review B"

DOI: 10.1103/physrevb.107.134303

Abstract: We show that phase transitions in the quantum $q$-state clock model for $q \leq 4$ can be characterized by an enhanced decay behavior of the Loschmidt echo via a small quench. The quantum criticality of… read more here.

Keywords: loschmidt echo; state clock; scaling laws; quantum state ... See more keywords

Decoherence from spin environments: Loschmidt echo and quasiparticle excitations

Sign Up to like & get
recommendations!
0 Published in 2017 at "Physical Review B"

DOI: 10.1103/physrevb.96.224302

Abstract: We revisit the problem of decoherence of a qubit centrally coupled to an interacting spin environment, here modeled by a quantum compass chain or an extended XY model in a staggered magnetic field. These two… read more here.

Keywords: spin environments; decoherence spin; environments loschmidt; spin ... See more keywords

Gamow vectors formalism applied to the Loschmidt echo

Sign Up to like & get
recommendations!
1 Published in 2020 at "European Physical Journal Plus"

DOI: 10.1140/epjp/s13360-020-00756-3

Abstract: Gamow vectors have been developed in order to give a mathematical description for quantum decay phenomena. Mainly, they have been applied to radioactive phenomena, scattering and to some decoherence models. They play a crucial role… read more here.

Keywords: gamow vectors; applied loschmidt; formalism applied; loschmidt echo ... See more keywords

Photonic Loschmidt echo in binary waveguide lattices.

Sign Up to like & get
recommendations!
0 Published in 2017 at "Optics letters"

DOI: 10.1364/ol.42.002551

Abstract: Time reversal is one of the most intriguing yet elusive wave phenomena of major interest in different areas of classical and quantum physics. Time reversal requires in principle to flip the sign of the Hamiltonian… read more here.

Keywords: photonic loschmidt; binary waveguide; loschmidt; waveguide lattices ... See more keywords