Efficient Emission Enhancement of Single CdSe/CdS/PMMA Quantum Dots through Controlled Near-Field Coupling to Plasmonic Bullseye Resonators

Werschler, Florian; Lindner, Benjamin; Hinz, Christopher; Conradt, Frieder; Gumbsheimer, P.; Behovits, Y.; Negele, Carla; Roo, Tjaard de; Tzang, Omer; Mecking, Stefan; Leitenstorfer, Alfred; Seletskiy, Denis V.

doi:10.1021/acs.nanolett.8b01533

Cited by 27 publications

(34 citation statements)

References 45 publications

(60 reference statements)

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“…In the future, this problem could be alleviated by deterministically depositing nanodiamonds using scanning-probe microscopy that has been considered as an increasingly viable tool for the assembly of quantum devices from individual constituents. [24,[47][48][49][50] The QPL emitter (shown as #2 in Section SIV, Supporting Information) with a nanodiamond height d = 40 ± 4 nm was selected in accordance with the optimal nanodiamond size derived from simulation. After the trench fabrication, we excited the emitter using a CW pump laser operating at 532 nm and recorded fluorescence images of the structure with a CCD camera.…”

Section: Spp Coupling Efficiencymentioning

confidence: 99%

Chip‐Compatible Quantum Plasmonic Launcher

Chiang

Bogdanov

Makarova

et al. 2020

Advanced Optical Materials

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Integrated on-demand single-photon sources are critical for the implementation of photonic quantum information processing systems. To enable practical quantum photonic devices, the emission rates of solid-state quantum emitters need to be substantially enhanced and the emitted signal must be directly coupled to an on-chip circuitry. The photon emission rate speed-up is best achieved via coupling to plasmonic antennas, while on-chip integration can be easily obtained by directly coupling emitters to photonic waveguides. The realization of practical devices requires that both the emission speed-up and efficient out-couping are achieved in a single architecture.Here, we propose a novel platform that effectively combines on-chip compatibility with high radiative emission rates -a quantum plasmonic launcher. The proposed launchers contain single nitrogen-vacancy (NV) centers in nanodiamonds as quantum emitters that offer record-high average fluorescence lifetime shortening factors of about 7000 times. Nanodiamonds with single NV are sandwiched between two silver films that couple more than half of the emission into inplane propagating surface plasmon polaritons. This simple, compact, and scalable architecture represents a crucial step towards the practical realization of high-speed on-chip quantum networks. coated with a 3 nm thick alumina layer. The NV emission is strongly enhanced and couples preferentially to inplane surface plasmon modes, making this design compatible with on-chip integration.

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Section: Spp Coupling Efficiencymentioning

confidence: 99%

Chip‐Compatible Quantum Plasmonic Launcher

Chiang

Bogdanov

Makarova

et al. 2020

Advanced Optical Materials

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show abstract

“…To address these problems, enormous efforts have been made to design various metallic antennas to manipulate the photons emitted from quantum emitters. These metallic antennas support surface-plasmon-polariton (SPP) resonant modes with strong field enhancements, small optical mode volumes, and linear polarizations (electric vectors mainly perpendicular to the metal surface) [8][9][10][11][12][13][14][15][16][17][18]. When a quantum emitter is located very close to a metallic antenna (several nanometers), the photons emitted from the quantum emitter are mainly coupled to the strong SPP resonant modes rather than directly radiating to free space [19].…”

Section: Introductionmentioning

confidence: 99%

Symmetry-tailored patterns and polarizations of single-photon emission

Zhang

Gong

et al. 2020

Nanophotonics

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AbstractDue to small optical mode volumes and linear polarizations of surface-plasmon-polariton (SPP) resonant modes in metallic antennas, it is very difficult to obtain complex emission patterns and polarizations for single-photon emitters. Herein, nonresonant enhancement in a silver nanowire is used to both enhance emission rates and extract a z-oriented dipole, and then the symmetry of metallic nanostructures is proposed to tailor the patterns and polarizations of single-photon emission. The emission pattern of a quantum dot located close to a metallic nanostructure with a symmetric axis is split into multiple flaps. The number of splitting flaps is equal to the order of the symmetric axis. Moreover, the electric vectors of the emitted photons become centrally symmetric about the symmetric axis. The above phenomena are well explained by both a simulation and an image dipole model. The structural-symmetry-tailoring mechanism may open up a new avenue in the design of multifunctional and novel quantum-plasmonic devices.

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“…Plasmonic metal nanostructures have demonstrated the capability to boost the PLQY through local enhancement of the incident optical field by modifying the radiative rate and increasing the out‐coupling. A variety of metallic nanostructures, such as nanowires, nanorods, nanodiscs, nanotriangular prisms, nanoshells, nanocubes, nanocavities, nanogrooves, and nanopores made of Au, Ag, Pt, etc., were employed. The enhancement ratios were in the range of 10–10 3 according to the specialized nanogeometry .…”

Section: Introductionmentioning

confidence: 99%

Over 1000‐Fold Enhancement of the Unidirectional Photoluminescence from a Microsphere‐Cavity‐Array‐Capped QD/PDMS Composite Film for Flexible Lighting and Displays

Yang

Wang

et al. 2019

Advanced Optical Materials

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to their transparency, solution processability, broad absorption, high quantum yield (QY), tunable bandgap, and sharp emission spectrum. [5][6][7][8][9] In recent years, the development of flexible lighting/display devices has required the integration of luminescence materials on flexible substrates with the characteristics of luminescence properties and the capability to be stretched into arbitrary shapes.A possible approach for this purpose is to incorporate QDs into a transparent composite film, in which the polymer matrix provides mechanical stretchability and chemical stabilization for the nanosized particles. [10][11][12] Unfortunately, assembling QDs into solid films from solvents generally results in agglomeration and complexation with polymer molecules, dramatically deteriorating the photoluminescence quantum yield (PLQY) due to nonradiative processes. The PL intensity of QDs embedded in a polymer matrix is acknowledged to be several times lower than that of colloidal QDs. [13][14][15] Moreover, the weakening of the out-coupling efficiency by the high refractive index polymer matrix further reduces the PL emission from the film. [16][17][18] These inherent drawbacks limit the development of QDs used in flexible devices for practical applications. TheThe development of quantum dot (QD) composite films for lighting and displays is of great importance because of their exceptional mechanical flexibility, chemical stability, and optical tunability. Generally, QDs are attached to plasmonic nanostructures to enhance their photoluminescence (PL) emission. However, plasmonic QD composite films suffer from deteriorated inherent quantum yields and lower enhancement ratios due to variations in the refractive index and dielectricity in the composites. Herein, the use of a dielectric microsphere cavity is reported to realize over 1000-fold enhancement of the PL in CdSe/ZnS QD/polydimethylsiloxane films with a highly unidirectional emission angle of ≈9°. The field regulation by the optical whispering-gallery resonance and directional antenna effect at the microscale is revealed to interpret the PL enhancement mechanism. Additionally, the microsphere cavity allows for the enhancement of white-light emission in the RGB-QD hybrid composite film. The present work inspires a straightforward strategy for boosting the light efficiency in QD composite films, with promising applications in flexible lighting/display devices.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.

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Efficient Emission Enhancement of Single CdSe/CdS/PMMA Quantum Dots through Controlled Near-Field Coupling to Plasmonic Bullseye Resonators

Cited by 27 publications

References 45 publications

Chip‐Compatible Quantum Plasmonic Launcher

Chip‐Compatible Quantum Plasmonic Launcher

Symmetry-tailored patterns and polarizations of single-photon emission

Over 1000‐Fold Enhancement of the Unidirectional Photoluminescence from a Microsphere‐Cavity‐Array‐Capped QD/PDMS Composite Film for Flexible Lighting and Displays

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