Nonlocal Effects in Energy Absorption of Coupled Quantum Dot–Metal Nanoparticle Systems

Kosionis, Spyridon G.; Terzis, Andreas; Yannopapas, Vassilios; Paspalakis, Emmanuel

doi:10.1021/jp3090183

Cited by 61 publications

(53 citation statements)

References 36 publications

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“…An Alkali atom can have γ q ∼ 10 7 Hz. The typical value for QD is about γ q ∼ 10 9 Hz [49]. In dye molecules, even though the radiative lifetime is as long as nanoseconds, the internal conversion rate (γ q ∼ 10 12 Hz) determines the duration of the excitation.…”

Section: Enhaced Duration For Plasmonic Oscillationsmentioning

confidence: 99%

“…The localized electric field (five orders larger compared to the incident field [40]) interacts with the quantum emitter. Hence, a dipole-dipole type effective coupling occurs between the antenna and the quantum object [40][41][42][43][44][45][46][47][48][49]. Because of the coupling, a transparency window emerges at the center of the absorption spectrum of the antenna, see The plasmonic oscillations are driven by a harmonic force which stands for the incident light.…”

Section: Introductionmentioning

confidence: 99%

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Metal nanoparticle plasmons operating within a quantum lifetime

Tașgın

2013

Nanoscale

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We investigate the dynamics of a plasmonic oscillation over a metal nanoparticle when it is strongly coupled to a quantum emitter (e.g. quantum dot, molecule). We simulate the density matrix evolution for a simple model, a coupled classical-quantum oscillators system. We show that the lifetime of the plasmonic oscillations can be increased several orders of magnitude, up to the decay time of the quantum emitter. This effect shows itself as the narrowing of the plasmon emission band in the spaser (surface plasmon amplification by the stimulated emission of radiation) experiment [Nature, 2009, 460, 1110], where a gold nanoparticle interacts with the surrounding molecules. Enhancement of the plasmonic excitation lifetime enables stimulated emission to overcome the spontaneous one. The enhancement occurs due to the emergence of a phenomenon analogous to electromagnetically induced transparency (EIT). The effect can find applications in many areas of nanoscale physics, such as in quantum information with plasmons and in increasing solar cell efficiency.

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Section: Enhaced Duration For Plasmonic Oscillationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metal nanoparticle plasmons operating within a quantum lifetime

Tașgın

2013

Nanoscale

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“…These values correspond to colloidal quantum dots (typically CdSe-based quantum dots) and have been used in various studies. 1,3,6,9,14,16,18,22,24,29 For e m ðxÞ, we use experimental values of gold. 49 We solve numerically, using a fourth-order Runge-Kutta method, Eqs.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…43 A structure that has attracted particular attention is a hybrid nanocrystal complex composed of a semiconductor quantum dot and a spherical metal nanoparticle. 1,[3][4][5][6][7][8][9][10][11][12][13][14][16][17][18][19][22][23][24][25][26][27][29][30][31][32]34 The optical response of this structure interacting with a weak probe field of varying frequency and a strong pump field of fixed frequency has already been considered in some works. 5,7,12,19,32 In particular, Lu and Zhu 7 investigated the probe absorption and dispersion of the probe field in the presence of the pump field and showed that a hole induced by coherent population oscillation appears at the absorption spectrum of the probe field when excitons and plasmons interact.…”

Section: Introductionmentioning

confidence: 99%

Strongly modified four-wave mixing in a coupled semiconductor quantum dot-metal nanoparticle system

Paspalakis¹,

Evangelou²,

Kosionis³

et al. 2014

Journal of Applied Physics

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Articles you may be interested inPrecise control of photoluminescence enhancement and quenching of semiconductor quantum dots using localized surface plasmons in metal nanoparticles Enhanced photorefractive effect in liquid crystal structures co-doped with semiconductor quantum dots and metallic nanoparticlesWe study the four-wave mixing effect in a coupled semiconductor quantum dot-spherical metal nanoparticle structure. Depending on the values of the pump field intensity and frequency, we find that there is a critical distance that changes the form of the spectrum. Above this distance, the four-wave mixing spectrum shows an ordinary three-peaked form and the effect of controlling its magnitude by changing the interparticle distance can be obtained. Below this critical distance, the four-wave mixing spectrum becomes single-peaked; and as the interparticle distance decreases, the spectrum is strongly suppressed. The behavior of the system is explained using the effective Rabi frequency that creates plasmonic metaresonances in the hybrid structure. In addition, the behavior of the effective Rabi frequency is explained via an analytical solution of the density matrix equations. V C 2014 AIP Publishing LLC. [http://dx.

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“…The excitonplasmon coupling can also induce Rabi oscillations [9][10][11], enhance second harmonic generation [12,13], generate bistability [14][15][16], etc. It can also alter for wave mixing and reverse the course of energy transfer between the QDs and MNPs [17,18].…”

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confidence: 99%

Dynamics of plasmonic field polarization induced by quantum coherence in quantum dot–metallic nanoshell structures

Sadeghi¹

2014

Opt. Lett.

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When a hybrid system consisting of a semiconductor quantum dot and a metallic nanoparticle interacts with a laser field, the plasmonic field of the metallic nanoparticle can be normalized by the quantum coherence generated in the quantum dot. In this Letter, we study the states of polarization of such a coherent-plasmonic field and demonstrate how these states can reveal unique aspects of the collective molecular properties of the hybrid system formed via coherent exciton-plasmon coupling. We show that transition between the molecular states of this system can lead to ultrafast polarization dynamics, including sudden reversal of the sense of variations of the plasmonic field and formation of circular and elliptical polarization.

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Nonlocal Effects in Energy Absorption of Coupled Quantum Dot–Metal Nanoparticle Systems

Cited by 61 publications

References 36 publications

Metal nanoparticle plasmons operating within a quantum lifetime

Metal nanoparticle plasmons operating within a quantum lifetime

Strongly modified four-wave mixing in a coupled semiconductor quantum dot-metal nanoparticle system

Dynamics of plasmonic field polarization induced by quantum coherence in quantum dot–metallic nanoshell structures

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