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arXiv · 2301.07332

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

Ali Raza Mirza·Mah Noor Jamil·Adam Zaman Chaudhry
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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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Ali Raza Mirza, Mah Noor Jamil, Adam Zaman Chaudhry. 2023-01-18. The role of initial system-environment correlations with a spin environment. https://arxiv.org/abs/2301.07332

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