Exploiting One-Dimensional Exciton–Phonon Coupling for Tunable and Efficient Single-Photon Generation with a Carbon Nanotube

Jeantet, Adrien; Chassagneux, Yannick; Claude, Théo; Roussignol, Philippe; Lauret, Jean-Sébastien; Reichel, Jakob; Voisin, Christophe

doi:10.1021/acs.nanolett.7b00973

Cited by 25 publications

(24 citation statements)

References 25 publications

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“…4j , the measured γ on / γ off rates correspond to an underlying F p = 180 for the best case, an average F p = 57, and a minimum of F p = 19. This is the highest Purcell factor reported for SWCNTs, that is threefold larger compared to a very recent report by Jeantet et al ( F p = 60) for an optimized dielectric scanning-fiber cavity 29 . Nevertheless, the exciton emission from SWCNTs still underperforms the theoretical value for our plasmonic nanocavities ( F P = 6591), predominantly due to orientational and/or spatial mismatch, leaving room for future improvements using deterministic assembly.…”

Section: Resultscontrasting

confidence: 55%

Purcell-enhanced quantum yield from carbon nanotube excitons coupled to plasmonic nanocavities

et al. 2017

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Single-walled carbon nanotubes (SWCNTs) are promising absorbers and emitters to enable novel photonic applications and devices but are also known to suffer from low optical quantum yields. Here we demonstrate SWCNT excitons coupled to plasmonic nanocavity arrays reaching deeply into the Purcell regime with Purcell factors (F P) up to F P = 180 (average F P = 57), Purcell-enhanced quantum yields of 62% (average 42%), and a photon emission rate of 15 MHz into the first lens. The cavity coupling is quasi-deterministic since the photophysical properties of every SWCNT are enhanced by at least one order of magnitude. Furthermore, the measured ultra-narrow exciton linewidth (18 μeV) reaches the radiative lifetime limit, which is promising towards generation of transform-limited single photons. To demonstrate utility beyond quantum light sources we show that nanocavity-coupled SWCNTs perform as single-molecule thermometers detecting plasmonically induced heat at cryogenic temperatures in a unique interplay of excitons, phonons, and plasmons at the nanoscale.

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Section: Resultscontrasting

confidence: 55%

Purcell-enhanced quantum yield from carbon nanotube excitons coupled to plasmonic nanocavities

et al. 2017

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“…The Purcell effect of a photonic or plasmonic cavity in the weak coupling regime can increase the radiative decay rate (i.e., reduce emission lifetime) of carbon nanotubes substantially. [118,119] One approach was demonstrated by Ishii et al who integrated aryl functionalized (6,5) nanotubes on a 2D silicon photonic crystal microcavity as shown in Figure 3d. [120] Defect emission that was coupled to the cavity mode showed very narrow linewidth (few nm, given by the cavity quality factor), 50 times higher photoluminescence intensity, and a 30% shorter emission lifetime (see Figure 3e) compared to uncoupled nanotubes with the same defects.…”

Section: Single-photon Emittersmentioning

confidence: 99%

Luminescent Defects in Single‐Walled Carbon Nanotubes for Applications

Zaumseil

2021

Advanced Optical Materials

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most applications, only semiconducting nanotubes and ideally only one (n,m) species (monochiral) are desired. This technological need has pushed the search for more controlled and selective growth of SWCNTs [5,6] and even more importantly fueled the development of post-growth purification and sorting of the different nanotube types and chiralities. Various, quite different techniques, such as gelchromatography, [7][8][9] aqueous two-phase separation (ATPE), [10][11][12] and selective polymer-wrapping, [13][14][15][16][17] now make it possible to produce and work with sufficiently large amounts of not only purely semiconducting nanotubes of a certain diameter range but also monochiral nanotubes and even enantiomerically pure samples. [18,19] This high degree of purification and hence the availability of nanotubes as a material with reproducible properties has been critical for applications in electronics [20,21] and energy conversion, [22,23] as well as imaging [24,25] and sensing [26,27] based on the near-infrared photoluminescence (PL) of SWCNTs and its modulation. However, an important paradigm shift occurred when it became clear that defects in the sp 2 carbon lattice of nanotubes are not always detrimental to the photoluminescence yield, but can indeed lead to new electronic states with highly interesting and useful optical properties. [28][29][30] These specific defects, which are variably named sp 3 defects, luminescent defects, organic color centers or quantum defects [31][32][33][34][35] have been at the heart of many recent studies on carbon nanotubes and promise a wide range of potential applications from single-photon emission to in vivo super-resolution imaging. This review will briefly introduce the underlying photo physics and properties of these defects, peruse recent progress in their controlled creation and discuss the various potential applications in detail.Semiconducting single-walled carbon nanotubes show extraordinary electronic and optical properties, such as high charge carrier mobilities and diameter-dependent near-infrared photoluminescence. The introduction of sp 3 defects in the carbon lattice of these nanotubes creates new electronic states that result in even further red-shifted photoluminescence with longer lifetimes and higher photoluminescence yield. These luminescent defects or organic color centers can be tuned chemically by controlling the precise binding configuration and the electrostatic properties of the attached substituents. This review covers the basic photophysics of luminescent sp 3 defects, synthetic methods for their controlled formation and discusses their application as near-infrared single-photon emitters at room temperature, in electroluminescent devices, as versatile optical sensors, and as fluorophores for bioimaging and potential super-resolution microscopy.

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“…[72][73][74][75] Therefore, bright excitons relax towards the dark state, and consequently non-radiative decay dominates over the radiative. 76,77 Several methods have been proposed to enhance the luminescence efficiency in semi-conducting tube, 78,79 including the use of a microcavity [80][81][82] and magnetic…”

Section: Excitonic Effectsmentioning

confidence: 99%

Interband transitions in narrow-gap carbon nanotubes and graphene nanoribbons

Hartmann

Saroka

Portnoi

2019

Journal of Applied Physics

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Interband transitions in narrow-gap carbon nanotubes and graphene nanoribbons We use the robust nearest-neighbour tight-binding approximation to study on the same footing interband dipole transitions in narrow-bandgap carbon nanotubes and graphene nanoribbons. It is demonstrated that curvature effects in metallic singlewalled carbon nanotubes and edge effects in gapless graphene nanoribbons not only open up bang gaps, which typically correspond to THz frequencies, but also result in a giant enhancement of the probability of optical transitions across these gaps.Moreover, the matrix element of the velocity operator for these transitions has a universal value (equal to the Fermi velocity in graphene) when the photon energy coincides with the band-gap energy. Upon increasing the excitation energy, the transition matrix element first rapidly decreases (for photon energies remaining in the THz range but exceeding two band gap energies it is reduced by three orders of magnitude), and thereafter it starts to increase proportionally to the photon frequency.A similar effect occurs in an armchair carbon nanotube with a band gap opened and controlled by a magnetic field applied along the nanotube axis. There is a direct correspondence between armchair graphene nanoribbons and single-walled zigzag carbon nanotubes. The described sharp photon-energy dependence of the transition matrix element together with the van Hove singularity at the band gap edge of the considered quasi-one-dimensional systems make them promising candidates for active elements of coherent THz radiation emitters. The effect of Pauli blocking of low-energy interband transitions caused by residual doping can be suppressed by creating a population inversion using high-frequency (optical) excitation.

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Exploiting One-Dimensional Exciton–Phonon Coupling for Tunable and Efficient Single-Photon Generation with a Carbon Nanotube

Cited by 25 publications

References 25 publications

Purcell-enhanced quantum yield from carbon nanotube excitons coupled to plasmonic nanocavities

Purcell-enhanced quantum yield from carbon nanotube excitons coupled to plasmonic nanocavities

Luminescent Defects in Single‐Walled Carbon Nanotubes for Applications

Interband transitions in narrow-gap carbon nanotubes and graphene nanoribbons

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