Sub-nanometre control of the coherent interaction between a single molecule and a plasmonic nanocavity

Nature Communications
Yao ZhangJ G Hou

Abstract

The coherent interaction between quantum emitters and photonic modes in cavities underlies many of the current strategies aiming at generating and controlling photonic quantum states. A plasmonic nanocavity provides a powerful solution for reducing the effective mode volumes down to nanometre scale, but spatial control at the atomic scale of the coupling with a single molecular emitter is challenging. Here we demonstrate sub-nanometre spatial control over the coherent coupling between a single molecule and a plasmonic nanocavity in close proximity by monitoring the evolution of Fano lineshapes and photonic Lamb shifts in tunnelling electron-induced luminescence spectra. The evolution of the Fano dips allows the determination of the effective interaction distance of ∼1 nm, coupling strengths reaching ∼15 meV and a giant self-interaction induced photonic Lamb shift of up to ∼3 meV. These results open new pathways to control quantum interference and field-matter interaction at the nanoscale.

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Citations

Dec 14, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·A MehlerJ Kröger
Apr 29, 2018·Nature Communications·Jianwei TangSailing He
May 21, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Yudie SunTao Li
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Nov 7, 2019·Optics Express·Juan XiaSailing He
Jan 22, 2020·Nature Nanotechnology·Benjamin DoppagneGuillaume Schull
Mar 7, 2019·Nature Communications·Oluwafemi S OjambatiJeremy J Baumberg
Apr 4, 2020·Physical Review Letters·S SchützG Pupillo
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Dec 3, 2020·The Journal of Chemical Physics·E CocciaS Corni
Jan 31, 2021·The Journal of Chemical Physics·Yang LuoZhen-Chao Dong
Mar 6, 2021·The Journal of Physical Chemistry Letters·Thomas S HeiderscheitStephan Link
Feb 26, 2021·Nature Communications·Fan-Fang KongJ G Hou
Apr 2, 2021·ACS Nano·Jiří DoležalMartin Švec
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