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



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

Publisher: IOP PUBLISHING LTD

: 2004

: Journal of Optics B Quantum and Semiclassical Optics

: JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS

: J OPT B-QUANTUM S O

: PII S1464-4266(04)65974-X

: 6

: 3

: S98

: S103

: 6

: 1464-4266

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


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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