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A Probe for Environment Properties in Open Quantum Systems: Accessing Spectral Densities with Multi-Dimensional Coherent Spectroscopy

Total Cost €


EC-Contrib. €






Project "BATH" data sheet

The following table provides information about the project.


Organization address
address: Paradisgatan 5c
city: LUND
postcode: 22100
website: n.a.

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Sweden [SE]
 Project website
 Total cost 173˙857 €
 EC max contribution 173˙857 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2015
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2017
 Duration (year-month-day) from 2017-02-01   to  2019-01-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    LUNDS UNIVERSITET SE (LUND) coordinator 173˙857.00


 Project objective

The structures nature has built to harvest and use the light from the sun are full of ingenuity. Indeed, they are the product of millions of years of trial and error. A lot can be learnt from the structure and function of photosynthetic organisms to help guide humanity's effort to develop solar energy technologies. One of the frontiers in understanding the early stages of photosynthesis is the interaction of the excited chromophores with the environment, and in particular how energy is dissipated as the light-induced excitation migrates to the reaction center where it will produce a charge separated state. It has become evident that the details of the dissipation are crucial for an efficient transfer. Dissipation is characterized by the spectral density of the bath, but this information is difficult to extract experimentally. Current approaches (e.g. three pulse photon echo spectroscopy, fluorescence line narrowing) have several limitations such as the inability to predict the motion for short times where the non-Markovianity of the bath is most evident.

In this work, we will develop descriptions of multidimensional spectroscopy which will map the spectral density as an experimental observable. For this we will work in the Non-equilibrium Green functions formalism, and apply partition ansatz for the bath such as the surrogate Hamitlonian to facilitate obtaining analytical expressions. Our formalism will be benchmarked against exact numerical methods by the use of entanglement and non-Markovianity witnesses. The application of our theory to natural systems will yield a picture of the most salient bath features in natural systems. These will be then compared to selected artificial systems.


year authors and title journal last update
List of publications.
2018 Daniel Finkelstein-Shapiro, Tõnu Pullerits, Thorsten Hansen
Two-dimensional Fano lineshapes: Excited-state absorption contributions
published pages: 184201, ISSN: 0021-9606, DOI: 10.1063/1.5019376
The Journal of Chemical Physics 148/18 2019-08-30
2018 Daniel Finkelstein-Shapiro, Simone Felicetti, Thorsten Hansen, Tonu Pullerits, Arne Keller
Classification of Dark States in Multi-level Dissipative Systems
published pages: , ISSN: , DOI:
arXiv 2019-08-30
2018 Daniel Finkelstein-Shapiro, Arne Keller
Ubiquity of Beutler-Fano profiles: From scattering to dissipative processes
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.97.023411
Physical Review A 97/2 2019-08-30

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