Quantum Spectroscopy of Plasmonic Nanostructures

Quantum Spectroscopy of Plasmonic Nanostructures

We use frequency-entangled photons, generated via spontaneous parametric down conversion, to measure the broadband spectral response of an array of gold nanoparticles exhibiting Fano-type plasmon resonance. Refractive-index sensing of a liquid is performed by measuring the shift of the array resonan...

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Main Authors: Dmitry A. Kalashnikov, Zhenying Pan, Arseniy I. Kuznetsov, Leonid A. Krivitsky
Format: Article
Language:English
Published: American Physical Society 2014-03-01
Series:Physical Review X
Online Access:http://doi.org/10.1103/PhysRevX.4.011049
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spelling doaj-7bca55be6a4649d49b0e13a7f0c9f8b82020-11-25T01:24:47ZengAmerican Physical SocietyPhysical Review X2160-33082014-03-014101104910.1103/PhysRevX.4.011049Quantum Spectroscopy of Plasmonic NanostructuresDmitry A. KalashnikovZhenying PanArseniy I. KuznetsovLeonid A. KrivitskyWe use frequency-entangled photons, generated via spontaneous parametric down conversion, to measure the broadband spectral response of an array of gold nanoparticles exhibiting Fano-type plasmon resonance. Refractive-index sensing of a liquid is performed by measuring the shift of the array resonance. This method is robust in excessively noisy conditions compared with conventional broadband transmission spectroscopy. Detection of a refractive-index change is demonstrated with a noise level 70 times higher than the signal, which is shown to be inaccessible with the conventional transmission spectroscopy. Use of low-photon fluxes makes this method suitable for measurements of photosensitive biosamples and chemical substances.http://doi.org/10.1103/PhysRevX.4.011049
collection DOAJ
language English
format Article
sources DOAJ
author Dmitry A. Kalashnikov
Zhenying Pan
Arseniy I. Kuznetsov
Leonid A. Krivitsky
spellingShingle Dmitry A. Kalashnikov
Zhenying Pan
Arseniy I. Kuznetsov
Leonid A. Krivitsky
Quantum Spectroscopy of Plasmonic Nanostructures
Physical Review X
author_facet Dmitry A. Kalashnikov
Zhenying Pan
Arseniy I. Kuznetsov
Leonid A. Krivitsky
author_sort Dmitry A. Kalashnikov
title Quantum Spectroscopy of Plasmonic Nanostructures
title_short Quantum Spectroscopy of Plasmonic Nanostructures
title_full Quantum Spectroscopy of Plasmonic Nanostructures
title_fullStr Quantum Spectroscopy of Plasmonic Nanostructures
title_full_unstemmed Quantum Spectroscopy of Plasmonic Nanostructures
title_sort quantum spectroscopy of plasmonic nanostructures
publisher American Physical Society
series Physical Review X
issn 2160-3308
publishDate 2014-03-01
description We use frequency-entangled photons, generated via spontaneous parametric down conversion, to measure the broadband spectral response of an array of gold nanoparticles exhibiting Fano-type plasmon resonance. Refractive-index sensing of a liquid is performed by measuring the shift of the array resonance. This method is robust in excessively noisy conditions compared with conventional broadband transmission spectroscopy. Detection of a refractive-index change is demonstrated with a noise level 70 times higher than the signal, which is shown to be inaccessible with the conventional transmission spectroscopy. Use of low-photon fluxes makes this method suitable for measurements of photosensitive biosamples and chemical substances.
url http://doi.org/10.1103/PhysRevX.4.011049
work_keys_str_mv AT dmitryakalashnikov quantumspectroscopyofplasmonicnanostructures
AT zhenyingpan quantumspectroscopyofplasmonicnanostructures
AT arseniyikuznetsov quantumspectroscopyofplasmonicnanostructures
AT leonidakrivitsky quantumspectroscopyofplasmonicnanostructures
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