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.
|Journal||Journal of Optics B: Quantum and Semiclassical Optics|
|Publication status||Published - 5 Mar 2004|
Maniscalco, S., Intravaia, F., Piilo, J., & Messina, A. (2004). Misbeliefs and misunderstandings about the non-Markovian dynamics of a damped harmonic oscillator. Journal of Optics B: Quantum and Semiclassical Optics, 6(3). https://doi.org/10.1088/1464-4266/6/3/016