Enhancement of Multiphoton Emission from Single CdSe Quantum Dots Coupled to Gold Films

LeBlanc, Sharonda; McClanahan, Mason R.; Jones, Marcus; Moyer, Patrick J.

doi:10.1021/nl400117h

Cited by 80 publications

(128 citation statements)

References 53 publications

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“…Inside the plasmonic antenna, the radiative decay rates are accelerated by the Purcell factor F P , not only at the exciton but at the multiexciton level as well. As a result, Auger processes that are very efficient at the multiexciton level become relatively inefficient in the high Purcell factor regime, which facilitates radiative recombination of multiexcitons [40,41,42]. This is confirmed by the loss of single photon emission in Figure 4 kHz.…”

Section: Quenching Of Auger Processes and Multiexciton Emissionmentioning

confidence: 88%

Extreme multiexciton emission from deterministically assembled single-emitter subwavelength plasmonic patch antennas

et al. 2020

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Plasmonic antennas are attractive optical structures for many applications in nano and quantum technologies. By providing enhanced interaction between a nanoemitter and light, they efficiently accelerate and direct spontaneous emission. One challenge, however, is the precise nanoscale positioning of the emitter in the structure. Here we present a laser etching protocol that deterministically positions a single colloidal CdSe/CdS core/shell quantum dot emitter inside a subwavelength plasmonic patch antenna with three-dimensional nanoscale control. By exploiting the properties of metal-insulator-metal structures at the nanoscale, the fabricated single emitter antenna exhibits an extremely high Purcell factor (>72) and brightness enhancement by a factor of 70. Due to the unprecedented quenching of Auger processes and the strong acceleration of multiexciton emission, more than 4 photons per pulse can be emitted by a single quantum dot.Our technology permits the fabrication of bright room-temperature single-emitter sources emitting either multiple or single photons.

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Section: Quenching Of Auger Processes and Multiexciton Emissionmentioning

confidence: 88%

Extreme multiexciton emission from deterministically assembled single-emitter subwavelength plasmonic patch antennas

et al. 2020

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“…The enhanced multiphoton emission from multiexcitons in the single CdSe/ZnS QD localized near a nanostructured gold¯lm using photon correlation spectroscopy has been reported. 16 The multiexciton dynamics in a single QD is also an important research area. The single and multiple photon emissions from single QD coupled to a certain metal nanocrystal are worth carrying out further study in the future.…”

Section: Resultsmentioning

confidence: 99%

Luminescence Emission Mediated by Surface Plasmon in the Semiconductor Quantum Dots

Mao

Chen

et al. 2015

NANO

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The luminescence of the hybrid CdSe/ZnS QDs-Ag nanocrystals has a weak blue shift in comparison with the luminescence of the pure quantum dots (QDs). The luminescence of the CdSe/ ZnS QDs only has a single exponential decay process, and the decay rates are almost same for di®erent emission wavelengths. The luminescence of the hybrid CdSe/ZnS QDs-Ag nanocrystals structure has two decay processes: The¯rst is a fast decay process, and then there is a slow decay process with nearly the same decay rate of the pure QDs. The fast decay process is due to the surface plasmon coupling and the coupling rate depends on the energy di®erence between the con¯ned exciton in the QDs and the resonance energy of the Ag plasmon.

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“…whereÎ is the identity operator and "H.c." denotes the Hermitian conjugate. As we can see, the non-linear char-acter of the above scattering superoperator originates from the so-called Pauli factors (Î −ρ); indeed, by neglecting such nonlinearities, i.e.,Î −ρ →Î, the scattering term in (5) reduces to the following Lindblad superoperator:…”

Section: Fundamentals Of the Density-matrix Formalismmentioning

confidence: 99%

Scattering nonlocality in quantum charge transport: Application to semiconductor nanostructures

Rosati

Rossi

2014

Phys. Rev. B

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Our primary goal is to provide a rigorous treatment of scattering nonlocality in semiconductor nanostructures. On the one hand, starting from the conventional density-matrix formulation and employing as ideal instrument for the study of the semiclassical limit the well-known Wignerfunction picture, we shall perform a fully quantum-mechanical derivation of the space-dependent Boltzmann equation. On the other hand, we shall examine the validity limits of such semiclassical framework, pointing out, in particular, regimes where scattering-nonlocality effects may play a relevant role; to this end we shall supplement our analytical investigation with a number of simulated experiments, discussing and further expanding preliminary studies of scattering-induced quantum diffusion in GaN-based nanomaterials. As for the case of carrier-carrier relaxation in photoexcited semiconductors, our analysis will show the failure of simplified dephasing models in describing phonon-induced scattering nonlocality, pointing out that such limitation is particularly severe for the case of quasielastic dissipation processes.

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Enhancement of Multiphoton Emission from Single CdSe Quantum Dots Coupled to Gold Films

Cited by 80 publications

References 53 publications

Extreme multiexciton emission from deterministically assembled single-emitter subwavelength plasmonic patch antennas

Extreme multiexciton emission from deterministically assembled single-emitter subwavelength plasmonic patch antennas

Luminescence Emission Mediated by Surface Plasmon in the Semiconductor Quantum Dots

Scattering nonlocality in quantum charge transport: Application to semiconductor nanostructures

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