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      Quantification of memory effects in topological two-band open quantum systems

      research-article
      Author(s): a , b , * , b
      Publication date (Electronic):
      Journal: Heliyon
      Publisher: Elsevier
      Keywords: Non-Markovianity, Two-band model, Memory effects, Nonlinear spectroscopy

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          Abstract

          We incorporate non-Markovian profiles and Linear Response Theory to analyze memory effects in two-band topological quantum systems. Furthermore, we have applied a measure of non-Markovianity in terms of nonlinear optical spectroscopy. On the other hand, we resort to memory kernel, solve the integro-differential equation of the open two-band topological quantum system to describe the degrees of non-Markovianity, calculate response factors based on Linear Response Theory, and analyze non-Markovian dynamics by varying the parameters of the nonlinear spectroscopy environment of the respective open quantum system.

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          Femtochemistry:  Atomic-Scale Dynamics of the Chemical Bond†

          Ahmed H. Zewail (2000)
          Article 0 comments Cited 397 times – based on 0 reviews     Review now
          Article has an altmetric score of 54
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            Dynamics of non-Markovian open quantum systems

            Ines de Vega, Daniel Alonso (2017)
            Article 0 comments Cited 234 times – based on 0 reviews     Review now
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              Evidence for wavelike energy transfer through quantum coherence in photosynthetic systems.

              Graham Fleming, Tae-Kyu Ahn, Tomáš Mančal … (2007)
              Photosynthetic complexes are exquisitely tuned to capture solar light efficiently, and then transmit the excitation energy to reaction centres, where long term energy storage is initiated. The energy transfer mechanism is often described by semiclassical models that invoke 'hopping' of excited-state populations along discrete energy levels. Two-dimensional Fourier transform electronic spectroscopy has mapped these energy levels and their coupling in the Fenna-Matthews-Olson (FMO) bacteriochlorophyll complex, which is found in green sulphur bacteria and acts as an energy 'wire' connecting a large peripheral light-harvesting antenna, the chlorosome, to the reaction centre. The spectroscopic data clearly document the dependence of the dominant energy transport pathways on the spatial properties of the excited-state wavefunctions of the whole bacteriochlorophyll complex. But the intricate dynamics of quantum coherence, which has no classical analogue, was largely neglected in the analyses-even though electronic energy transfer involving oscillatory populations of donors and acceptors was first discussed more than 70 years ago, and electronic quantum beats arising from quantum coherence in photosynthetic complexes have been predicted and indirectly observed. Here we extend previous two-dimensional electronic spectroscopy investigations of the FMO bacteriochlorophyll complex, and obtain direct evidence for remarkably long-lived electronic quantum coherence playing an important part in energy transfer processes within this system. The quantum coherence manifests itself in characteristic, directly observable quantum beating signals among the excitons within the Chlorobium tepidum FMO complex at 77 K. This wavelike characteristic of the energy transfer within the photosynthetic complex can explain its extreme efficiency, in that it allows the complexes to sample vast areas of phase space to find the most efficient path.
              Article 0 comments Cited 191 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                F. Mesa
                Journal
                Journal ID (nlm-ta): Heliyon
                Journal ID (iso-abbrev): Heliyon
                Title: Heliyon
                Publisher: Elsevier
                ISSN (Electronic): 2405-8440
                Publication date PMC-release: 20 November 2024
                Publication date Collection: 30 November 2024
                Publication date (Electronic): 20 November 2024
                Volume: 10
                Issue: 22
                Electronic Location Identifier: e40552
                Affiliations
                [a ]Universidad de Antioquia, Facultad de Ciencias Exactas y Naturales, Grupo de Investigación en Física Teórica y Matemáticas Aplicadas, Calle 70 No. 52-21, Medellín, 050010, Antioquia, Colombia
                [b ]Fundación Universitaria Los Libertadores, Facultad de Ingeniería y Ciencias Básicas, NanoTech Group, Cra.16 No. 63a-68, Bogotá, 111221, Cundinamarca, Colombia
                Author notes
                [* ]Corresponding author. fredy.mesa@ 123456libertadores.edu.co
                Article
                Publisher Item ID: S2405-8440(24)16583-8 Publisher ID: e40552
                DOI: 10.1016/j.heliyon.2024.e40552
                PMC ID: 11625132
                PubMed ID: 39650179
                SO-VID: af7537d8-e1cd-47b5-a7d1-fb671d2897b9
                Copyright © © 2024 The Author(s)
                License:

                This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

                History
                Date received : 21 June 2024
                Date revision received : 15 November 2024
                Date accepted : 18 November 2024
                Categories
                Subject: Research Article

                Keywords: non-markovianity,two-band model,memory effects,nonlinear spectroscopy
                Data availability:
                Keywords: non-markovianity, two-band model, memory effects, nonlinear spectroscopy

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