Interplay between Strong Coupling and Radiative Damping of Excitons and Surface Plasmon Polaritons in Hybrid Nanostructures

Wang, Wei; Vasa, Parinda; Pomraenke, R.; Vogelgesang, Ralf; Sio, Antonietta De; Sommer, Ephraim; Maiuri, Margherita; Manzoni, Cristian; Cerullo, Giulio; Lienau, Christoph

doi:10.1021/nn405981k

Cited by 109 publications

(166 citation statements)

References 57 publications

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“…Here, the coupling strength g 1(6) between the SPs and site 1 (6) is assumed to be independent of k under the Markovian approximation4345. The strong decay rate into SPs then takes the form24, , and the values we choose for g 1 and g 6 are consistent with a recent analysis of nanowire SPs coupled to J-aggregates181920.…”

Section: Resultsmentioning

confidence: 78%

Plasmonic bio-sensing for the Fenna-Matthews-Olson complex

Chen

Lambert

Shih

et al. 2017

Sci Rep

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We study theoretically the bio-sensing capabilities of metal nanowire surface plasmons. As a specific example, we couple the nanowire to specific sites (bacteriochlorophyll) of the Fenna-Matthews-Olson (FMO) photosynthetic pigment protein complex. In this hybrid system, we find that when certain sites of the FMO complex are subject to either the suppression of inter-site transitions or are entirely disconnected from the complex, the resulting variations in the excitation transfer rates through the complex can be monitored through the corresponding changes in the scattering spectra of the incident nanowire surface plasmons. We also find that these changes can be further enhanced by changing the ratio of plasmon-site couplings. The change of the Fano lineshape in the scattering spectra further reveals that “site 5” in the FMO complex plays a distinct role from other sites. Our results provide a feasible way, using single photons, to detect mutation-induced, or bleaching-induced, local defects or modifications of the FMO complex, and allows access to both the local and global properties of the excitation transfer in such systems.

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Section: Resultsmentioning

confidence: 78%

Plasmonic bio-sensing for the Fenna-Matthews-Olson complex

Chen

Lambert

Shih

et al. 2017

Sci Rep

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“…In fact, the coupling strength depends on the exciton damping and the plasmon damping. [31][32][33] The coupling strength reduces for the smaller and larger Ag nanoprism sizes and thus the coherency sharply decreases [ Fig. 4(b)] .…”

Section: -mentioning

confidence: 99%

Probing ultrafast energy transfer between excitons and plasmons in the ultrastrong coupling regime

Balci

Kocabaş

Küçüköz

et al. 2014

Applied Physics Letters

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Cataloged from PDF version of article.We investigate ultrafast energy transfer between excitons and plasmons in ensembles of core-shell type nanoparticles consisting of metal core covered with a concentric thin J-aggregate (JA) shell. The high electric field localization by the Ag nanoprisms and the high oscillator strength of the JAs allow us to probe this interaction in the ultrastrong plasmon-exciton coupling regime. Linear and nonlinear optical properties of the coupled system have been measured using transient absorption spectroscopy revealing that the hybrid system shows half-plasmonic and half-excitonic properties. The tunability of the nanoprism plasmon resonance provides a flexible platform to study the dynamics of the hybrid state in a broad range of wavelengths. (C) 2014 AIP Publishing LLC

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“…Hence, advanced ultrafast optical techniques, providing time resolution in the 10-fs range or even below, are required for such studies. Indeed, only very recently have Rabi oscillations in TDBC J aggregates coupled to surface plasmon modes been observed in real time [30,31].In this Rapid Communication, we study the roomtemperature real-time dynamics of light transmission through a strongly coupled organic microcavity, comprising a Jaggregated cyanine dye coupled to a dielectric microcavity. Time-dependent up-conversion measurements display pronounced temporal modulations indicative of Rabi oscillations.…”

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confidence: 99%

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Direct evidence of Rabi oscillations and antiresonance in a strongly coupled organic microcavity

et al. 2015

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We report the direct observation of 30-fs period Rabi oscillations between excitons and cavity photons in a strongly coupled J-aggregate microcavity by means of time-resolved up-conversion and spectral interferometry measurements. The time structure of the transmitted electric field, measured by linear spectral interferometry, shows pronounced ultrafast beats. Its spectral phase reveals a distinct signature caused by destructive interference between the coherent drive and the field radiated by the exciton. This antiresonance selectively probes the uncoupled exciton excitation, and its observation uncovers the coherent and ultrafast exchange of energy between the optically excited cavity and the J-aggregate excitons, as confirmed by transfer matrix calculations. [7,8] have already been demonstrated. The microscopic origin of these phenomena lies in the coherent interaction between excitons and cavity photons, via coupling of the excitonic transition dipole moment to fluctuating (vacuum) electromagnetic fields stored within the cavity. This strong coupling results in the formation of new hybrid lower (LP) and upper (UP) excitonphoton polariton modes, separated in energy by normal mode splitting [9,10]. Polaritons are coherent superpositions of the bare exciton and cavity photon modes; when one of the pure components is driven, a periodic energy exchange between the excitonic and photonic components occurs in the form of Rabi oscillations. From a dynamical perspective, strong coupling is directly connected with a periodic flow of energy between excitons and cavity photons: The normal mode splitting reflects ultrafast Rabi oscillations between the excitonic and the photonic components of the system. Upon impulsive excitation, this coupling leads to characteristic interference beats in the light transmitted through the cavity. As such, one of the most direct ways to probe coupling dynamics is to study, in the time domain, the electric field emitted by the cavity.The optical properties of inorganic microcavities have been intensively studied, with experimental evidence of Rabi oscillations [11,12], nonlinearities in polariton splitting [13], polariton scattering, and relaxation effects [14,15]. In these systems, however, due to small normal mode splitting energies, most applications are confined to low temperatures. The large oscillator strength of organic semiconductors, on the other hand, allows the observation of a strong-coupling regime at room temperature and with easy fabrication techniques, thus * Email address: tvirgili@polimi.it opening up a wide range of applications for cavity polaritons [16][17][18][19]. Strongly coupled (5,6-dichloro-2-[[5,6-dichloro-1-ethyl-3-(4-sulphobutyl)benzimidazol-2 ylidene]propenyl]-1-ethyl-3-(4-sulphobutyl) benzimidazolium hydroxide, inner salt, sodium salt) (TDBC) cyanine dye J aggregates in a microcavity have therefore been studied intensely for their linear optical properties [20], temperature-dependent emission properties [21,22], and interactions with molecular vibrations [...

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Interplay between Strong Coupling and Radiative Damping of Excitons and Surface Plasmon Polaritons in Hybrid Nanostructures

Cited by 109 publications

References 57 publications

Plasmonic bio-sensing for the Fenna-Matthews-Olson complex

Plasmonic bio-sensing for the Fenna-Matthews-Olson complex

Probing ultrafast energy transfer between excitons and plasmons in the ultrastrong coupling regime

Direct evidence of Rabi oscillations and antiresonance in a strongly coupled organic microcavity

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