Quantum regression in dephasing phenomena

Lonigro D, Chruściński D (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Journal of Physics A: Mathematical and Theoretical Institute of Physics Publishing (IOP)

Book Volume: 55

Article Number: 225308

Journal Issue: 22

DOI: 10.1088/1751-8121/ac6a2d

Abstract

We investigate the validity of quantum regression for a family of quantum Hamiltonians on a multipartite system leading to phase-damping reduced dynamics. After finding necessary and sufficient conditions for the CP-divisibility of the corresponding channel, we evaluate a hierarchy of equations equivalent to the validity of quantum regression under arbitrary interventions; in particular, we find necessary conditions for a nontrivial dephasing to be compatible with quantum regression. In this framework, we study a class of dephasing-type generalized spin-boson models, investigating the existence of qubit-environment coupling functions that ensure the exact validity of quantum regression.

Authors with CRIS profile

Davide Lonigro

Involved external institutions

Nicolaus Copernicus University (NCU) / Uniwersytet Mikołaja Kopernika w Toruniu (UMK) PL Poland (PL) University of Bari Aldo Moro / Università degli Studi di Bari Aldo Moro IT Italy (IT)

How to cite

APA:

Lonigro, D., & Chruściński, D. (2022). Quantum regression in dephasing phenomena. Journal of Physics A: Mathematical and Theoretical, 55(22). https://doi.org/10.1088/1751-8121/ac6a2d

MLA:

Lonigro, Davide, and Dariusz Chruściński. "Quantum regression in dephasing phenomena." Journal of Physics A: Mathematical and Theoretical 55.22 (2022).

BibTeX: Download