Entanglement revive and information flow within the decoherent environment

Abstract

In this paper, the dynamics of entanglement is investigated in the presence of a noisy environment. We reveal its revival behavior and probe the mechanisms of this behavior via an information-theoretic approach. By analyzing the correlation distribution and the information flow within the composite system including the qubit subsystem and a noisy environment, it has been found that the subsystem-environment coupling can induce the quasi-periodic entanglement revival. Furthermore, the dynamical relationship among tripartite correlations, bipartite entanglement and local state information is explored, which provides a new insight into the non-Markovian mechanisms during the evolution.

Generation of entanglement between quantum dot molecule with the presence of phonon effects in a voltage-controlled junction

“…On the other hand, there are some situations in which the interactions between the quantum system and environment can produce quantum correlations such as entanglement revival [27,28]. In other words, environments may operate as control elements for these cases [29]. The effect of the environment has a significant role in the generation and maximization of entanglement.…”

“…Among various approaches considering the systems with an electron environment, the coupling of electron-phonon can be described through the quantum master equation in both Markovian [31,9,10] and non-Markovian [32,33] regimes. Moreover, exploring the dynamics of quantum entanglement in a noisy environment shows that the coupling of a qubit with a non-Markovian environment can induce damping which resulted in the entanglement revival [29].…”

Enhancement of the entanglement generation via randomly perturbed series of external pulses in a nonlinear Bose–Hubbard dimer

“…Maximally entangled states are also necessary for successful quantum teleportation experiments [3,11,12]. Another valid group of prob-lems in which entangled states are applied is related to the flow of quantum entanglement and information [13][14][15]. The nature of such flow, due to its quantum character, considerably differs from that appearing in classical systems (for instance, see [16][17][18][19]).…”

Detecting quantum phase transition in multipartite spin systems via bipartite detectors

“…A prototypical detecting tool is the entanglement [23][24][25][26], which becomes a key resource for quantum information tasks. Moreover, trace distance [27], as one of the fundamental concepts in quantum information science, is a signature of distinguishability between two quantum states, and gets an enormous amount of attention [28][29][30].…”