Entropy fluctuation and correlation transfer in tunable discrete-time quantum walk with fractional Gaussian noise

Muniandy, Sithi Vinayakam and Ishak, Nur Izzati and Yi, Chong Wu (2022) Entropy fluctuation and correlation transfer in tunable discrete-time quantum walk with fractional Gaussian noise. Physical Review E (PRE), 106 (2). ISSN 2470-0045, DOI https://doi.org/10.1103/PhysRevE.106.024113.

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Abstract

We study the time correlation in the von Neumann entropy fluctuation of the tunable discrete-time quantum walk in one dimension, induced by the coin disorder arising from the temporal fractional Gaussian noise (fGn). The fGn is characterized by the Hurst exponent H, which provides three different correlation scenarios, namely antipersistent (0 < H < 0.5), memoryless (H = 0.5), and persistent (0.5 < H < 1). We show the correlation of fGn is transferred to the coin's degree of entanglement and eventually transpires in the time correlation of the von Neumann entropy fluctuation. This study hints at the potential of using noise correlation as a resource to sustain information backflow via the interaction of quantum system with the noisy environment.

Item Type: Article
Funders: Malaysian Ministry of Higher Education Fundamental Research Grant Scheme [FRGS/1/2020/STG07/UM/01/2]
Uncontrolled Keywords: Physics; Fluids; Plasmas; Mathematical
Subjects: Q Science > QC Physics
Divisions: Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 25 Aug 2023 03:07
Last Modified: 25 Aug 2023 03:07
URI: http://eprints.um.edu.my/id/eprint/40920

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