Role of quantum coherence in shaping the line shape of an exciton interacting with a spatially and temporally correlated bath

The Journal of Chemical Physics
Rajesh DuttaBiman Bagchi

Abstract

Kubo's fluctuation theory of line shape forms the backbone of our understanding of optical and vibrational line shapes, through such concepts as static heterogeneity and motional narrowing. However, the theory does not properly address the effects of quantum coherences on optical line shape, especially in extended systems where a large number of eigenstates are present. In this work, we study the line shape of an exciton in a one-dimensional lattice consisting of regularly placed and equally separated optical two level systems. We consider both linear array and cyclic ring systems of different sizes. Detailed analytical calculations of line shape have been carried out by using Kubo's stochastic Liouville equation (SLE). We make use of the observation that in the site representation, the Hamiltonian of our system with constant off-diagonal coupling J is a tridiagonal Toeplitz matrix (TDTM) whose eigenvalues and eigenfunctions are known analytically. This identification is particularly useful for long chains where the eigenvalues of TDTM help understanding crossover between static and fast modulation limits. We summarize the new results as follows. (i) In the slow modulation limit when the bath correlation time is large, the effe...Continue Reading

References

Oct 24, 2007·The Journal of Chemical Physics·S M VlamingJ Knoester
Dec 3, 2008·The Journal of Chemical Physics·Seogjoo JangJoel D Eaves
Dec 3, 2008·The Journal of Chemical Physics·Masoud MohseniAlán Aspuru-Guzik
Jan 20, 2009·Science·Elisabetta Collini, Gregory D Scholes
Feb 28, 2009·The Journal of Physical Chemistry. a·Elisabetta Collini, Gregory D Scholes
Nov 26, 2009·The Journal of Physical Chemistry. a·Jianshu Cao, Robert J Silbey
Dec 18, 2009·The Journal of Physical Chemistry. B·Tessa R CalhounGraham R Fleming
Jun 3, 2010·The Journal of Chemical Physics·Xin Chen, Robert J Silbey
Mar 10, 2011·Journal of the American Chemical Society·Jessica E DonehueTheodore Goodson
May 31, 2012·The Journal of Physical Chemistry. B·Niklas ChristenssonTomáš Mančal
Dec 20, 2013·Journal of the Royal Society, Interface·Francesca FassioliGregory D Scholes
Sep 4, 2015·The Journal of Chemical Physics·Oliver Robert Tozer, William Barford
Nov 3, 2016·The Journal of Chemical Physics·Rajesh Dutta, Biman Bagchi

❮ Previous
Next ❯

Citations

Nov 24, 2020·Proceedings. Mathematical, Physical, and Engineering Sciences·Gregory D Scholes
Apr 28, 2020·The Journal of Physical Chemistry. B·Davinder Singh, Shubhrangshu Dasgupta
Oct 31, 2017·The Journal of Physical Chemistry Letters·Rajesh Dutta, Biman Bagchi
May 12, 2020·The Journal of Physical Chemistry. B·Rajesh Dutta, Biman Bagchi
Jan 9, 2021·The Journal of Physical Chemistry. B·Davinder Singh

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.