Which plasmonic nano-antenna is best for free-space out-coupling of single photon emission from a hyperbolic metamaterial resonator?

Ahmed, Nadeem; Inam, Faraz A.

doi:10.1364/ol.423250

Cited by 10 publications

(4 citation statements)

References 23 publications

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“…We would like to point out that a detailed study on the point dipole emission coupling to various types of antennas (cylindrical, cuboid, bow-tie and cross) has already been presented in a previous work [ 48 ]. The CE for the cylindrical antennas is known to be among the best for the coupling of near-surface single color-center’s emission in bulk substrate.…”

Section: Color Centres Collected Photon Ratementioning

confidence: 99%

“…The coupled SiC pillar/Ag antenna scheme is optimised for the maximum collected photons or power collection from the structure. For dipole emission in a resonator, total CE mainly depends on the antenna dimensions [ 48 ]. Therefore, to observe the maximum CE, the Ag antenna’s diameter should be optimised independent of the SiC pillar’s diameter.…”

Section: Color Centres Collected Photon Ratementioning

confidence: 99%

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Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color Centers

Inam

Castelletto

2023

Nanomaterials

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A yet unresolved challenge in developing quantum technologies based on color centres in high refractive index semiconductors is the efficient fluorescence enhancement of point defects in bulk materials. Optical resonators and antennas have been designed to provide directional emission, spontaneous emission rate enhancement and collection efficiency enhancement at the same time. While collection efficiency enhancement can be achieved by individual nanopillars or nanowires, fluorescent emission enhancement is achieved using nanoresonators or nanoantennas. In this work, we optimise the design of a metal-dielectric nanopillar-based antenna/resonator fabricated in a silicon carbide (SiC) substrate with integrated quantum emitters. Here we consider various color centres known in SiC such as silicon mono-vacancy and the carbon antisite vacancy pair, that show single photon emission and quantum sensing functionalities with optical electron spin read-out, respectively. We model the dipole emission fluorescence rate of these color centres into the metal-dielectric nanopillar hybrid antenna resonator using multi-polar electromagnetic scattering resonances and near-field plasmonic field enhancement and confinement. We calculate the fluorescence collected photon rate enhancement for these solid state vacancy-centers in SiC in these metal-dielectric nanopillar resonators, showing a trade-off effect between the collection efficiency and radiative Purcell factor enhancement. We obtained a collected photon rate enhancement from a silicon monovacancy vacancy center embedded in an optimised hybrid antenna-resonator two orders of magnitude larger compared to the case of the color centres in bulk material.

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Section: Color Centres Collected Photon Ratementioning

confidence: 99%

Section: Color Centres Collected Photon Ratementioning

confidence: 99%

Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color Centers

Inam

Castelletto

2023

Nanomaterials

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“…It is required to enhance the spontaneous emission rate at ZPL of the NV− center, while suppressing the PSB emission, for the ultimate use of NV− center for many quantum technological applications [24,25]. Several photonic structures are proposed to achieve the above challenges ranging from photonic crystals to meta-materials of different dimensions [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Stacked metasurfaces for enhancing the emission and extraction rate of single nitrogen-vacancy centers in nanodiamond

Khokhar¹,

Singh²,

Nair³

2022

J. Opt.

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Dielectric metasurfaces with unique possibilities of manipulating light-matter interaction lead to new insights in exploring spontaneous emission control using single quantum emitters. Here, we study the stacked metasurfaces in one- (1D) and two-dimensions (2D) to enhance the emission rate of a single quantum emitter using the associated optical resonances. The 1D structures with stacked bilayers are investigated to exhibit Tamm plasmon resonance optimized at the zero phonon line (ZPL) of the negative nitrogen-vacancy (NV-) center. The 2D stacked metasurface comprising of two-slots silicon nano-disks is studied for the Kerker condition at ZPL wavelength. The far-field radiation plots for the 1D and 2D stacked metasurfaces show an increased extraction efficiency rate for the NV- center at ZPL wavelength that reciprocates the localized electric field intensity. The modified local density of optical states results in large Purcell enhancement of 3.8 times and 25 times for the single NV- center integrated with 1D and 2D stacked metasurface, respectively. These results have implications in exploring stacked metasurfaces for applications such as single photon generation and CMOS compatible light sources for on-demand chip integration.

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“…This issue can be solved by the nanoantenna-shape modification [30] or adding dielectric components [31][32][33]. Low-loss (epsilon-near-zero) metamaterials can also be used [34][35][36][37]. In [38], the authors offer another technique that consists in suppressing non-radiative losses by hybridization of the nanoparticle plasmon modes and the external resonator.…”

Section: Introductionmentioning

confidence: 99%

Hybrid cube-in-cup nanoantenna: towards ordered photonics

Gritsienko¹,

Kurochkin²,

Lega³

et al. 2021

Nanotechnology

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The most significant goal of nanophotonics is the development of high-speed quantum emitting devices operating at ambient temperature. In this regard, plasmonic nanoparticles-on-mirror are potential candidates for designing high-speed photon sources. We introduce a novel hybrid nanoantenna (HNA) with CdSe/CdS colloidal quantum dots (QDs) based on a silver nanocube in a metal cup that presents a nanoparticle-in-cavity coupled with an emitters system. We use focused ion beam nanolithography to fabricate an ordered array of cups, which were then filled with colloidal nanoparticles using the most simple drop-casting and spin coating methods. The spectral and time-resolved studies of the samples with one or more nanocubes in the cup reveal a significant change in the radiation characteristics of QDs inside the nanoantenna. The Purcell effect causes an increase in the fluorescence decay rate (≥30) and an increase in the fluorescence intensity (≥3) of emitters in the HNA. Using the finite element method simulations, we have discovered that the proximity of the cups wall affects the oscillation modes of the gap plasmon, which, in turn, leads to changes in the electric field enhancement inside the nanoantenna gap. Additionally, substantial variations in the behavior of the gap plasmons at different polarizations of the exciting radiation have been revealed. The proposed nanoantenna can be useful in the development of plasmonic sensors, display pixels, and single-photon sources.

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Which plasmonic nano-antenna is best for free-space out-coupling of single photon emission from a hyperbolic metamaterial resonator?

Cited by 10 publications

References 23 publications

Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color Centers

Metal-Dielectric Nanopillar Antenna-Resonators for Efficient Collected Photon Rate from Silicon Carbide Color Centers

Stacked metasurfaces for enhancing the emission and extraction rate of single nitrogen-vacancy centers in nanodiamond

Hybrid cube-in-cup nanoantenna: towards ordered photonics

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