A1 Refereed original research article in a scientific journal

Misbeliefs and misunderstandings about the non-Markovian dynamics of a damped harmonic oscillator



Authors: Maniscalco S, Intravaia F, Piilo J, Messina A

Publisher: IOP PUBLISHING LTD

Publication year: 2004

Journal: Journal of Optics B Quantum and Semiclassical Optics

Journal name in source: JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS

Journal acronym: J OPT B-QUANTUM S O

Article number: PII S1464-4266(04)65974-X

Volume: 6

Issue: 3

First page : S98

Last page: S103

Number of pages: 6

ISSN: 1464-4266

DOI: https://doi.org/10.1088/1464-4266/6/3/016(external)


Abstract
We use the exact solution for the damped harmonic oscillator to discuss some relevant aspects of its open dynamics are often misunderstood. We compare two different approximations both referred to as a rotating wave approximation. Using a specific example, we clarify some issues related to non-Markovian dynamics, non-Lindblad-type dynamics, and positivity of the density matrix.



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