Bright Single-Photon Emitters with a CdSe Quantum Dot and Multimode Tapered Nanoantenna for the Visible Spectral Range

Rakhlin, M. V.; Sorokin, Sergey; Kazanov, D. R.; Sedova, I. V.; Shubina, T. V.; Иванов, С. В.; Mikhailovskii, Vladimir; Торопов, А. А.

doi:10.3390/nano11040916

Cited by 13 publications

(8 citation statements)

References 48 publications

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“…In spite of impressive achievements, a drawback of this system is the cryogenic temperatures which are needed to make the QDs operate as efficient, pure single-photon emitters. CdSe QDs embedded in ZnSe appear as complementary since (1) they operate as single photon emitters [4][5][6][7] up to room temperature [8,9], and (2) they emit in the blue-green range, a wavelength range with a specific interest for underwater or water-air communication [10][11][12][13]. Thus, these QDs appear as promising single-photon emitters for underwater or water-air quantum key distribution.…”

Section: Introductionmentioning

confidence: 99%

Quantitative analysis of the blue-green single-photon emission from a quantum dot in a thick tapered nanowire

et al. 2022

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Quantum dots acting as single photon emitters in the blue-green range are fabricated and characterized at cryogenic temperature. They consist in CdSe dots inserted in (Zn,Mg)Se nanowires with a thick shell. Photoluminescence spectra, decay curves and autocorrelation functions were measured under nonresonant continuous-wave and pulsed excitation. An analytical approach is applied simultaneously to the decay curves and correlation functions. It allows a quantitative description of how these two quantities are affected by the exciton rise due to biexciton feeding, the bright exciton decay, the effect of the dark exciton, and the re-excitation between two laser pulses. Linewidths at our limit of resolution (200 µeV) are recorded. The reported correlation counts vary from a full control by re-excitation from traps, to a small contribution of re-excitation by mobile carriers or other QDs, as low as 5%.

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Section: Introductionmentioning

confidence: 99%

Quantitative analysis of the blue-green single-photon emission from a quantum dot in a thick tapered nanowire

et al. 2022

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“…Alternative coupling to surface plasmons in metallic structures [ 27 , 28 , 29 , 30 , 31 ] suffers from high optical losses [ 32 ], which leads to both limiting the emission intensity of QDs and damaging the potential devices by heating them. Interaction of QDs with various semiconductor [ 33 , 34 , 35 , 36 , 37 , 38 ] and plasmonic waveguides [ 39 , 40 ] also allows one to control their photoluminescence (PL) by coupling to either propagating waveguide modes or surface plasmon–polariton modes. However, these approaches suffer the same limitations as described above.…”

Section: Introductionmentioning

confidence: 99%

Quantum Dot Photoluminescence Enhancement in GaAs Nanopillar Oligomers Driven by Collective Magnetic Modes

et al. 2023

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Single photon sources based on semiconductor quantum dots are one of the most prospective elements for optical quantum computing and cryptography. Such systems are often based on Bragg resonators, which provide several ways to control the emission of quantum dots. However, the fabrication of periodic structures with many thin layers is difficult. On the other hand, the coupling of single-photon sources with resonant nanoclusters made of high-index dielectric materials is known as a promising way for emission control. Our experiments and calculations show that the excitation of magnetic Mie-type resonance by linearly polarized light in a GaAs nanopillar oligomer with embedded InAs quantum dots leads to quantum emitters absorption efficiency enhancement. Moreover, the nanoresonator at the wavelength of magnetic dipole resonance also acts as a nanoantenna for a generated signal, allowing control over its radiation spatial profile. We experimentally demonstrated an order of magnitude emission enhancement and numerically reached forty times gain in comparison with unstructured film. These findings highlight the potential of quantum dots coupling with Mie-resonant oligomers collective modes for nanoscale single-photon sources development.

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“…Room-temperature solid-state emitters of single photons are the keystone of many applications in quantum optics. − Today, one of the most promising types of single-photon emitters (SPEs) are atom-like emitters, such as quantum dots and fluorescent atomic defects in two- or three-dimensional crystals. − As a platform for solid-state single-photon emitters, materials such as elemental (C, Si, Ge) and compound (SiC, GaN, CdSe, InP, InAs, etc.) semiconductors, as well as transition metal dichalcogenides (MoS 2 , WS 2 , MoSe 2 , WSe 2 ), are considered. ,− Recently, hexagonal boron nitride ( h -BN) has taken a special place among these materials for photonics applications. , …”

Section: Introductionmentioning

confidence: 99%

Photocontrol of Single-Photon Generation in Boron Nitride Nanoparticles: Implications for Quantum Photon Sources, Sub-Diffraction Nanoscopy, and Bioimaging

Gritsienko

Matveev

Kurochkin

et al. 2022

ACS Appl. Nano Mater.

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Hexagonal boron nitride (h-BN) is a promising material for nanophotonics. Intrinsic and artificially induced defects in h-BN films, flakes, and nanoparticles are potential candidates as quantum emitters at room temperature. However, the energy structure and the methods for controlling these defects are still unclear. In this paper, we have obtained single-photon sources in ultrafine h-BN nanoparticles fabricated by a cost-effective ammonothermal dehydration. We demonstrate quantum-dot-like emission using photon autocorrelation and fluorescence intensity trace measurements in the red range. The results obtained using low-power near-ultraviolet coexcitation reveal the distinctive photophysical properties of fluorescent defects in the synthesized h-BN nanoparticles. We show that quantum emitters in nanoparticles can be switched from dark to bright mode by coexcitation photocontrol. The observed effects in nanoparticles were explained by various mechanisms of metastable state disabling. We also report a 2-fold improvement in the contrast of fluorescence images from h-BN nanoparticles under low-intensity laser scanning coexcitation. The research results can be used to develop efficient solid-state photon sources, as well as in nanoscopy employing biocompatible fluorescent nanoparticles.

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Bright Single-Photon Emitters with a CdSe Quantum Dot and Multimode Tapered Nanoantenna for the Visible Spectral Range

Cited by 13 publications

References 48 publications

Quantitative analysis of the blue-green single-photon emission from a quantum dot in a thick tapered nanowire

Quantitative analysis of the blue-green single-photon emission from a quantum dot in a thick tapered nanowire

Quantum Dot Photoluminescence Enhancement in GaAs Nanopillar Oligomers Driven by Collective Magnetic Modes

Photocontrol of Single-Photon Generation in Boron Nitride Nanoparticles: Implications for Quantum Photon Sources, Sub-Diffraction Nanoscopy, and Bioimaging

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