Publication result detail

Vacuum Rabi splitting of a dark plasmonic cavity mode revealed by fast electrons

BITTON, O.; GUPTA, S.; HOUBEN, L.; KVAPIL, M.; KŘÁPEK, V.; ŠIKOLA, T.; HARAN, G.

Original Title

Vacuum Rabi splitting of a dark plasmonic cavity mode revealed by fast electrons

English Title

Vacuum Rabi splitting of a dark plasmonic cavity mode revealed by fast electrons

Type

WoS Article

Original Abstract

Recent years have seen a growing interest in strong coupling between plasmons and excitons, as a way to generate new quantum optical testbeds and influence chemical dynamics and reactivity. Strong coupling to bright plasmonic modes has been achieved even with single quantum emitters. Dark plasmonic modes fare better in some applications due to longer lifetimes, but are difficult to probe as they are subradiant. Here, we apply electron energy loss (EEL) spectroscopy to demonstrate that a dark mode of an individual plasmonic bowtie can interact with a small number of quantum emitters, as evidenced by Rabi-split spectra. Coupling strengths of up to 85 meV place the bowtie-emitter devices at the onset of the strong coupling regime. Remarkably, the coupling occurs at the periphery of the bowtie gaps, even while the electron beam probes their center. Our findings pave the way for using EEL spectroscopy to study exciton-plasmon interactions involving non-emissive photonic modes.

English abstract

Recent years have seen a growing interest in strong coupling between plasmons and excitons, as a way to generate new quantum optical testbeds and influence chemical dynamics and reactivity. Strong coupling to bright plasmonic modes has been achieved even with single quantum emitters. Dark plasmonic modes fare better in some applications due to longer lifetimes, but are difficult to probe as they are subradiant. Here, we apply electron energy loss (EEL) spectroscopy to demonstrate that a dark mode of an individual plasmonic bowtie can interact with a small number of quantum emitters, as evidenced by Rabi-split spectra. Coupling strengths of up to 85 meV place the bowtie-emitter devices at the onset of the strong coupling regime. Remarkably, the coupling occurs at the periphery of the bowtie gaps, even while the electron beam probes their center. Our findings pave the way for using EEL spectroscopy to study exciton-plasmon interactions involving non-emissive photonic modes.

Keywords

strong coupling; electron energy loss spectroscopy; EELS; exciton-plasmon polaritons

Key words in English

strong coupling; electron energy loss spectroscopy; EELS; exciton-plasmon polaritons

Authors

BITTON, O.; GUPTA, S.; HOUBEN, L.; KVAPIL, M.; KŘÁPEK, V.; ŠIKOLA, T.; HARAN, G.

RIV year

2021

Released

01.12.2020

Publisher

Springer Nature

ISBN

2041-1723

Periodical

Nature Communications

Volume

11

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

7

Pages count

7

URL

https://doi.org/10.1038/s41467-020-14364-3

Full text in the Digital Library

http://hdl.handle.net/11012/184689

BibTex

@article{BUT162531,
  author="Ora {Bitton} and Satyendra Nath {Gupta} and Lothar {Houben} and Michal {Kvapil} and Vlastimil {Křápek} and Tomáš {Šikola} and Gilad {Haran}",
  title="Vacuum Rabi splitting of a dark plasmonic cavity mode revealed by fast electrons
",
  journal="Nature Communications",
  year="2020",
  volume="11",
  number="1",
  pages="1--7",
  doi="10.1038/s41467-020-14364-3",
  issn="2041-1723",
  url="https://doi.org/10.1038/s41467-020-14364-3"
}