Non-Markovian Quantum Dynamics in a Squeezed Reservoir

Research output: Contribution to journalResearch articleContributedpeer-review


We study non-Markovian dynamics of an open quantum system system interacting with a nonstationary squeezed bosonic reservoir. We derive exact and approximate descriptions for the open system dynamics. Focusing on the spin boson model, we compare exact dynamics with Redfield theory and a quantum optical master equation for both short and long time dynamics and in non-Markovian and Markov regimes. The squeezing of the bath results in asymptotic oscillations in the stationary state, which are captured faithfully by the Redfield master equation in the case of weak coupling. Furthermore, we find that the bath squeezing direction modifies the effective system–environment coupling strength and, thus, the strength of the dissipation.


Original languageEnglish
Article number3
Number of pages13
Issue number3
Publication statusPublished - 1 Mar 2022

External IDs

Scopus 85125799926
Mendeley b8b7a548-d099-3f7b-a67d-1c03b417f0e1
dblp journals/entropy/LinkSL22
PubMed 35327864
WOS 000775596000001
ORCID /0000-0002-7806-3525/work/142234186
ORCID /0000-0002-1520-7931/work/142246623



  • non-Markovian dynamics, open quantum systems, squeezed states, Squeezed states, Open quantum systems, Non-Markovian dynamics