Resonant energy transfer under the influence of the evanescent field from the metal

Amrit Poudel, Xin Chen, Mark A Ratner

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We present a quantum framework based on a density matrix of a dimer system to investigate the quantum dynamics of excitation energy transfer (EET) in the presence of the evanescent field from the metal and the phonon bath. Due to the spatial correlation of the electric field in the vicinity of the metal, the spectral density of the evanescent field is similar to that of a shared phonon bath. However, the EET dynamics under the influence of the evanescent field is an open and a new problem. Here we use a thin metallic film to investigate the effect of the evanescent field on the excitation energy transfer in a dimer system based on a density matrix approach. Our results indicate that a thin metallic film enhances the energy transfer rate at the expense of absorbing energy during the process. Since the spectral density of the evanescent field is affected by the geometry of the medium and the distance of a dimer system from the medium, our results demonstrate the possibility to tune EET based on material geometry and distances. Our model also serves as an expansion to quantum heat engine models and provides a framework to investigate the EET in light harvesting molecular networks under the influence of the evanescent field.

Original languageEnglish
Article number244115
JournalJournal of Chemical Physics
Volume146
Issue number24
DOIs
Publication statusPublished - Jun 28 2017

Fingerprint

Evanescent fields
Excitation energy
Energy transfer
Metals
energy transfer
Dimers
metals
Metallic films
Spectral density
excitation
dimers
baths
heat engines
Heat engines
Thin films
Geometry
geometry
Electric fields
expansion
electric fields

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Resonant energy transfer under the influence of the evanescent field from the metal. / Poudel, Amrit; Chen, Xin; Ratner, Mark A.

In: Journal of Chemical Physics, Vol. 146, No. 24, 244115, 28.06.2017.

Research output: Contribution to journalArticle

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