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

Projektinformationen

BATH

ID Finanzhilfevereinbarung: 702694

DOI 10.3030/702694

Projekt abgeschlossen

EK-Unterschriftsdatum 11 Februar 2016

Startdatum 1 Februar 2017

Enddatum 31 Januar 2019

Finanziert unter

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Gesamtkosten € 173 857,20

EU-Beitrag € 173 857,20

Koordiniert durch

LUNDS UNIVERSITET
Sweden

Ziel

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.

Wissenschaftliches Gebiet

• natural sciences › chemical sciences › catalysis › photocatalysis
• natural sciences › physical sciences › atomic physics
• natural sciences › physical sciences › quantum physics › quantum optics
• natural sciences › mathematics › applied mathematics › numerical analysis
• natural sciences › physical sciences › optics › spectroscopy

Programm/Programme

• H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme
• H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility

Thema/Themen

• MSCA-IF-2015-EF - Marie Skłodowska-Curie Individual Fellowships (IF-EF)

Aufforderung zur Vorschlagseinreichung

H2020-MSCA-IF-2015

Finanzierungsplan

MSCA-IF-EF-ST - Standard EF

Koordinator

LUNDS UNIVERSITET

• Netto-EU-Beitrag: € 173 857,20
• Adresse: Paradisgatan 5c ; 22100 Lund ; Schweden
• Region: Södra Sverige › Sydsverige › Skåne län
• Aktivitätstyp: Higher or Secondary Education Establishments
• Gesamtkosten: € 173 857,20