Non-Markovian bath-induced coupling revealed by two-dimensional
spectroscopy
- URL: http://arxiv.org/abs/2402.15454v2
- Date: Fri, 8 Mar 2024 11:59:20 GMT
- Title: Non-Markovian bath-induced coupling revealed by two-dimensional
spectroscopy
- Authors: Roosmarijn de Wit and Jonathan Keeling and Brendon W. Lovett and Alex
W. Chin
- Abstract summary: We show that there can be coherent coupling between different system states of a form that only occurs in a non-Markovian treatment of the bath.
Because this involves entangled system-bath states, we demonstrate that there are distinct signatures of this physics in simple absorption spectra and two-dimensional electronic spectroscopy.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Problems in the field of open quantum systems often involve an environment
that greatly impacts excitation dynamics. Here we show that there can be
coherent coupling between different system states of a form that only occurs in
a non-Markovian treatment of the bath. Because this involves entangled
system-bath states, we demonstrate that there are distinct signatures of this
physics in simple absorption spectra and two-dimensional electronic
spectroscopy. To do this we introduce a numerical method to simulate optical
spectra of non-Markovian open quantum systems. The method employs a process
tensor framework to efficiently compute multi-time correlation in a numerically
exact way.
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