Instabilities in the optical response of a semiconductor quantum dot—metal nanoparticle heterodimer: self-oscillations and chaos

Nugroho, Bintoro S.; Iskandar, Alexander A.; Малышев, В. А.; Knoester, Jasper

doi:10.1088/2040-8986/19/1/015004

Cited by 11 publications

(16 citation statements)

References 53 publications

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“…As a result, the redistribution of the level populations and the competition between transitions come into play creating necessary conditions for emerging instabilities (see Ref. [68] for more details).…”

Section: Discussionmentioning

confidence: 99%

Nonlinear optical response of a two-dimensional quantum-dot supercrystal: Emerging multistability, periodic and aperiodic self-oscillations, chaos, and transient chaos

et al. 2019

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We conduct a theoretical study of the nonlinear optical response of a two-dimensional semiconductor quantum dot supercrystal subjected to a quasi-resonant continuous wave excitation. A constituent quantum dot is modeled as a three-level ladder-like system (comprising the ground, the one-exciton, and the bi-exction states). To study the stationary response of the supercrystal, we propose an exact linear parametric method of solving the nonlinear steady-state problem, while to address the supercrystal optical dynamics qualitatively, we put forward a novel method to calculate the bifurcation diagram of the system. Analyzing the dynamics, we demonstrate that the supercrystal can exhibit multistability, periodic and aperiodic self-oscillations, and chaotic behavior, depending on parameters of the supercrystal and excitation conditions. The effects originate from the interplay of the intrinsic nonlinearity of quantum dots and the retarded inter-dot dipole-dipole interaction. The latter provides a positive feedback which results in the exotic supercrystal optical dynamics. These peculiarities of the supercrystal optical response open up a possibility for all-optical applications and devices. In particular, an all-optical switch, a tunable generator of THz pulses (in self-oscillating regime), a noise generator (in chaotic regime), and a tunable bistable mirror can be designed. a b c FIG. 1. PbSe rocksalt 2D nanostructures with (a) honeycomb and (b) square lattice symmetry, (c) -CdSe nanostructure with a compressed zincblende and slightly distorted square lattices (scale bars, 50 nm). Insets show the electrodiffractograms in the [111] (a) and [100] (b,c) projections. The figure is from Ref. [7].linearity of the layer is ensured by the fact that two-level emitters are nonlinear systems. The positive feedback originates from the secondary field, which is generated by the emitters themselves; this is the so-called intrinsic feedback, i.e., here a cavity (external feedback) is not required.A two-dimensional (2D) semiconductor quantum dot (SQD) supercrystal represents a limiting case of a thin layer. In this paper, we conduct a theoretical study of the nonlinear optical response of such a system. A single SQD is considered as a point-like system with three consecutive levels of the ground, one-exciton, and bi-arXiv:1910.02553v1 [physics.optics]

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Section: Discussionmentioning

confidence: 99%

Nonlinear optical response of a two-dimensional quantum-dot supercrystal: Emerging multistability, periodic and aperiodic self-oscillations, chaos, and transient chaos

et al. 2019

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“…Hal ini dapat meningkatkan respon nonlinearitas sistem [11] dan memodifikasi respons optik material secara drastis [12]. Beberapa penelitian telah melaporkan bahwa SQD yang dihibridisasi dengan MNP menunjukkan berbagai sifat optis yang tidak ditemui pada sistem tunggalnya, seperti optical instability [13], optical bistability [14], osilasi Rabi termodifikasi [15,16], gain without inversion [17], hingga transparansi terinduksi elektromagnetik dengan mediasi plasmon [18].…”

Section: Latar Belakangunclassified

“…Pada bagian ini, respons optis nanokomposit SQD-MNP dianalisis dengan menyelesaikan secara numerik persamaan 7 Selanjutnya [13]. Optical instability ini muncul sebagai akibat dari kompetisi eksitasi ke keadaan |2⟩ dan |3⟩ dan nonlinearitas yang muncul dari eksitasi plasmon pada MNP [13].…”

Section: Hasil Numerik Dan Pembahasanunclassified

Analisis Respons Optis Nanokomposit: Pengaruh Faktor Geometris

Nugroho

Yulyanto²

2020

Positron

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Pada penelitian ini, dilakukan studi teoritik respons optis sistem nanokomposit yang terdiri dari semiconductor quantum dot (SQD) dan metal nanoparticle (MNP) elips. SQD dimodelkan secara kuantum sebagai three-level system bertipe V sedangkan MNP dimodelkan dalam kerangka teori elektromagnetika klasik. Fokus studi diarahkan pada investigasi pengaruh faktor geometris, yaitu aspek rasio MNP, terhadap modifikasi respons optis nanokomposit. Formalisme density matrix dengan aplikasi persamaan Liouville–von Neumann digunakan untuk menganalisis dinamika optis sistem. Hasil yang diperoleh menunjukkan bahwa variasi aspek rasio MNP dapat menyebabkan modifikasi pada dinamika populasi SQD. Nanokomposit dengan aspek rasio MNP bernilai q=0,5 memiliki frekuensi osilasi populasi yang lebih tinggi dibandingkan nanokomposit dengan q=1,5 . Ditemukan pula bahwa nanokomposit dengan q = 0,5 mencapai keadaan tunaknya pada interval waktu yang lebih lama dibandingkan q=1,5. Optical instability dapat muncul saat nanokomposit dengan dieksitasi dengan medan berintensitas tinggi, I=10^4.7 W/cm^2, Saat fenomena ini terjadi, populasi SQD mengalami osilasi secara lestari dan sistem tidak pernah mencapai keadaan tunaknya.

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“…which is important if the MNP's radius r is on the or-der of the SQD-MNP spacing d (our case, see below), E SQD (t) reads [36,43]…”

Section: Mnp Sqdmentioning

confidence: 99%

“…III B. Nevertheless, the SQD self-action effect might be of importance for other hybrids such as, for instance, a ZnSe/ZnS(core/shell)-Ag heterodimer for which ∆ B = 2.5 meV and all |G i | (taken at d = 16 nm) are on the order of ∆ B [36]. This situation requires an additional study due to the complicated interplay of the enhancement and self-action effects.…”

Section: Effects Of the Sqd Self-actionmentioning

confidence: 99%

Plasmon-assisted two-photon Rabi oscillations in a semiconductor quantum dot – metal nanoparticle heterodimer

et al. 2019

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Tho-photon Rabi oscillations hold potential for quantum computing and quantum information processing, because during a Rabi cycle a pair of entangled photons may be created. We theoretically investigate the onset of this phenomenon in a heterodimer comprising a semiconductor quantum dot strongly coupled to a metal nanoparticle. Two-photon Rabi oscillations in this system occur due to a coherent two-photon process involving the ground-to-biexciton transition in the quantum dot. The presence of a metal nanoparticle nearby the quantum dot results in a self-action of the quantum dot via the metal nanoparticle, because the polatization state of the latter depends on the quantum state of the former. The interparticle interaction gives rise to two principal effects: (i) -enhancement of the external field amplitude and (ii) -renormalization of the quantum dot's resonance frequencies and relaxation rates of the off-diagonal density matrix elements, both depending on the populations of the quantum dot's levels. Here, we focus on the first effect, which results in interesting new features, in particular, in an increased number of Rabi cycles per pulse as compared to an isolated quantum dot and subsequent growth of the number of entangled photon pairs per pulse. We also discuss the destructive role of radiative decay of the excitonic states on two-photon Rabi oscillations for both an isolated quantum dot and a heterodimer.

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Instabilities in the optical response of a semiconductor quantum dot—metal nanoparticle heterodimer: self-oscillations and chaos

Cited by 11 publications

References 53 publications

Nonlinear optical response of a two-dimensional quantum-dot supercrystal: Emerging multistability, periodic and aperiodic self-oscillations, chaos, and transient chaos

Nonlinear optical response of a two-dimensional quantum-dot supercrystal: Emerging multistability, periodic and aperiodic self-oscillations, chaos, and transient chaos

Analisis Respons Optis Nanokomposit: Pengaruh Faktor Geometris

Plasmon-assisted two-photon Rabi oscillations in a semiconductor quantum dot – metal nanoparticle heterodimer

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