The role of initial system-environment correlations with a spin environment

• URL: http://arxiv.org/abs/2301.07332v1
• Date: Wed, 18 Jan 2023 06:44:32 GMT
• Title: The role of initial system-environment correlations with a spin environment
• Authors: Ali Raza Mirza, Mah Noor Jamil, Adam Zaman Chaudhry
• Abstract summary: We show that the effect of the initial correlations is, in general, very significant and non-trivial. We also extend our study to investigate the dynamics of the entanglement between two two-level systems interacting with a common spin environment.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Open quantum systems are a subject of immense interest as their understanding is crucial in the implementation of modern quantum technologies. In the study of their dynamics, the role of the initial system-environment correlations is commonly ignored. In this work, to gain insights into the role of these correlations, we solve an exactly solvable model of a single two-level system interacting with a spin environment, with the initial system state prepared by a suitable unitary operation. By solving the dynamics exactly for arbitrary system-environment coupling strength while taking into account the initial system-environment correlations, we show that the effect of the initial correlations is, in general, very significant and non-trivial. To further highlight the importance of the initial system-environment correlations, we also extend our study to investigate the dynamics of the entanglement between two two-level systems interacting with a common spin environment.

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