Coherence and entropy squeezing in the spin-boson model under non-Markovian environment

  • K. BerradaEmail author
  • O. Aldaghri


We study the dynamical behavior of the coherence and squeezing for a two-level system immersed in an environment modeled by a spin degree of freedom in a magnetic field coupled linearly to an oscillator bath with non-Markovian environment. The dependence of the coherence and squeezing on the system and reservoir parameters shows that these quantities could be greatly controlled and manipulated with the assistance of the reservoir cutoff frequency, system oscillator frequency, and reservoir temperature. Moreover, we show that the proper choice of the external control field can make further control on the coherence and squeezing of the atomic system under the effect of environmental noises. The results show new interest features that are usefully utilized in controlling the physical quantities and show how the enhancement and preservation of coherence and squeezing can greatly benefit from the combination of the all physical parameters.


Mesoscopic systems Spin systems Spin-boson model Coherence Entropy Squeezing 



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Authors and Affiliations

  1. 1.Department of Physics, College of ScienceAl Imam Mohammad Ibn Saud Islamic University (IMSIU)RiyadhSaudi Arabia
  2. 2.The Abdus Salam International Centre for Theoretical PhysicsMiramare-TriesteItaly

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