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Revising quantum optical phenomena in adatoms coupled to graphene nanoantennas

Published

Author(s)

Garnett W. Bryant, Miriam Kosik, Marvin Muller, Karolina Slowik, Andres Ayuela, Carsten Rockstuhl, Marta Pelc

Abstract

Graphene flakes acting as photonic nanoantennas sustain strong electromagnetic field localization and enhancement. To exploit the field enhancement, quantum emitters such as atoms or molecules should be positioned in such close proximity to the flake that electron tunneling might influence the optical and electronic properties of the system. However, tunneling is usually not considered in quantum plasmonic approaches that focus on the optical coupling mechanism between quantum emitters and nanoantennas. This work presents a framework for describing the electron dynamics in hybrid systems consisting of triangular graphene nanoflakes coupled both electronically and optically to adatoms and subject to external illumination. Our framework combines the single-particle tight-binding approach with a nonlinear master equation formalism that captures both optical and electronic interactions We apply the framework to demonstrate the impact of electron tunneling between the adatom and the flake on emblematic quantum optical phenomena: degradation of coherent Rabi oscillations and quenching of Purcell spontaneous emission enhancement in two-level adatoms in proximity of triangular graphene nanoflakes.
Citation
Nanophotonics
Volume
11
Issue
14

Keywords

graphene, nanoflakes, nanoantennas, adatoms, two-level system

Citation

Bryant, G. , Kosik, M. , Muller, M. , Slowik, K. , Ayuela, A. , Rockstuhl, C. and Pelc, M. (2022), Revising quantum optical phenomena in adatoms coupled to graphene nanoantennas, Nanophotonics, [online], https://doi.org/10.1515/nanoph-2022-0154, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=934594 (Accessed August 14, 2022)
Created June 8, 2022, Updated June 28, 2022