Photonic Nanobeam Cavities with Nanopockets for Efficient Integration of Fluorescent Nanoparticles

Fröch, Johannes E.; Kim, Sejeong; Stewart, Connor; Xu, Xiaoxue; Du, Ziqing; Toth, Milos; Aharonovich, Igor

doi:10.1021/acs.nanolett.0c00466

Cited by 19 publications

(17 citation statements)

References 37 publications

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“…Furthermore, the SE rate in the PAH‐RhoB coated PSiO 2 MC at the resonance wavelength compared to that in the PSiO 2 reference structure is

τ_{avg_Ref} / τ_{avg_MC} \approx 1.19

(Table 1). An experimental Purcell factor F p ≈ 2.82 is then achieved at the resonance wavelength λ = 588 nm according to the equation: [ 45,46 ]

\begin{matrix} F_{normalp} (λ) = \frac{I_{MC} (λ)}{I_{Ref} (λ)} \frac{τ_{Ref} (λ)}{τ_{MC} (λ)} \end{matrix}

as the product of the ratios of PL intensity enhancement and lifetime reduction between PSiO 2 MC and reference structures.…”

Section: Resultsmentioning

confidence: 99%

Nanoscale Photoluminescence Manipulation in Monolithic Porous Silicon Oxide Microcavity Coated with Rhodamine‐Labeled Polyelectrolyte via Electrostatic Nanoassembling

Chen

Robbiano

Paternò

et al. 2021

Advanced Optical Materials

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Porous silicon (PSi) is a promising material for future integrated nanophotonics when coupled with guest emitters, still facing challenges in terms of homogenous distribution and nanometric thickness of the emitter coating within the silicon nanostructure. Herein, it is shown that the nanopore surface of a porous silicon oxide (PSiO2) microcavity (MC) can be conformally coated with a uniform nm‐thick layer of a cationic light‐emitting polyelectrolyte, e.g., poly(allylamine hydrochloride) labeled with Rhodamine B (PAH‐RhoB), leveraging the self‐tuned electrostatic interaction of the positively‐charged PAH‐RhoB polymer and negatively‐charged PSiO2 surface. It is found that the emission of PAH‐RhoB in the PSiO2 MC is enhanced (≈2.5×) and narrowed (≈30×) at the resonant wavelength, compared with that of PAH‐RhoB in a non‐resonant PSiO2 reference structure. The time‐resolved photoluminescence analysis highlights a shortening (≈20%) of the PAH‐RhoB emission lifetime in the PSiO2 MC at the resonance versus off‐resonance wavelengths, and with respect to the reference structure, thereby proving a significant variation of the radiative decay rate. Remarkably, an experimental Purcell factor Fp = 2.82 is achieved. This is further confirmed by the enhancement of the photoluminescence quantum yield of the PAH‐RhoB in the PSiO2 MC with respect to the reference structure. Application of the electrostatic nanoassembling approach to other emitting dyes, nanomaterials, and nanophotonic systems is envisaged.

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“…Furthermore, the SE rate in the PAH‐RhoB coated PSiO 2 MC at the resonance wavelength compared to that in the PSiO 2 reference structure is

τ_{avg_Ref} / τ_{avg_MC} \approx 1.19

(Table 1). An experimental Purcell factor F p ≈ 2.82 is then achieved at the resonance wavelength λ = 588 nm according to the equation: [ 45,46 ]

\begin{matrix} F_{normalp} (λ) = \frac{I_{MC} (λ)}{I_{Ref} (λ)} \frac{τ_{Ref} (λ)}{τ_{MC} (λ)} \end{matrix}

as the product of the ratios of PL intensity enhancement and lifetime reduction between PSiO 2 MC and reference structures.…”

Section: Resultsmentioning

confidence: 99%

Nanoscale Photoluminescence Manipulation in Monolithic Porous Silicon Oxide Microcavity Coated with Rhodamine‐Labeled Polyelectrolyte via Electrostatic Nanoassembling

Chen

Robbiano

Paternò

et al. 2021

Advanced Optical Materials

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“…The photonics material itself does not need to be diamond, in contrast to the alldiamond devices. Hybrid embedded coupling can, for example, be achieved by establishing pre-defined nanopockets [24,107]. Therefore, a very precise nanomanipulation is required.…”

Section: Hybrid Quantum Nanophotonics Established By Embedded Optical...mentioning

confidence: 99%

Hybrid Quantum Nanophotonics: Interfacing Color Center in Nanodiamonds with Si3N4-Photonics

Kubanek¹,

Ovvyan²,

Antoniuk³

et al. 2022

Preprint

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This chapter covers recent developments in the field of hybrid quantum photonics based on color centers in nanodiamonds and Si 3 N 4 -photonics towards a technology platform with applications in quantum information processing and quantum information distribution. The methodological approach can be divided in three main tasks. First, the fabrication and optimization of Si 3 N 4photonics. Second, the creation, characterization and control of color centers in nanodiamonds. Third, the assembly of hybrid quantum photonics by integrating the nanodiamonds into the photonic structures. One focus will be the efficient interfacing of the color centers done by optimizing the optical coupling. The chapter describes recent progress in all three steps and summarizes the established hybrid platform. We believe, that the hybrid approach provides a promising path to realize quantum photonic applications, such as quantum networks or quantum repeaters, in the near future.

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“…However, in pursuit of a strong interaction with matter, the manipulation of the electromagnetic field in a subwavelength space is one of the most important tasks in nanoscience researches and applications, ranging from integrated optics to biological sensing 1 – 4 . Nanostructures of dielectric 5 – 7 , metallic 8 – 10 , and two-dimensional materials 11 , 12 have been developed to tightly confine the electromagnetic field mainly based on the evanescent-wave coupling. For example, the plasmonic nanostructure has been used for the light field confinement at a scale smaller than 10 −2 λ 8 – 10 .…”

Section: Introductionmentioning

confidence: 99%

Focusing the electromagnetic field to 10−6λ for ultra-high enhancement of field-matter interaction

et al. 2021

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Focusing electromagnetic field to enhance the interaction with matter has been promoting researches and applications of nano electronics and photonics. Usually, the evanescent-wave coupling is adopted in various nano structures and materials to confine the electromagnetic field into a subwavelength space. Here, based on the direct coupling with confined electron oscillations in a nanowire, we demonstrate a tight localization of microwave field down to 10−6λ. A hybrid nanowire-bowtie antenna is further designed to focus the free-space microwave to this deep-subwavelength space. Detected by the nitrogen vacancy center in diamond, the field intensity and microwave-spin interaction strength are enhanced by 2.0 × 108 and 1.4 × 104 times, respectively. Such a high concentration of microwave field will further promote integrated quantum information processing, sensing and microwave photonics in a nanoscale system.

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Photonic Nanobeam Cavities with Nanopockets for Efficient Integration of Fluorescent Nanoparticles

Cited by 19 publications

References 37 publications

Nanoscale Photoluminescence Manipulation in Monolithic Porous Silicon Oxide Microcavity Coated with Rhodamine‐Labeled Polyelectrolyte via Electrostatic Nanoassembling

Nanoscale Photoluminescence Manipulation in Monolithic Porous Silicon Oxide Microcavity Coated with Rhodamine‐Labeled Polyelectrolyte via Electrostatic Nanoassembling

Hybrid Quantum Nanophotonics: Interfacing Color Center in Nanodiamonds with Si3N4-Photonics

Focusing the electromagnetic field to 10−6λ for ultra-high enhancement of field-matter interaction

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