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Tunnel-coupled optically active quantum dot molecules (QDMs), have the potential to operate as spin-photon-interfaces with coupled spins that interact with two different photon frequencies at the same time. A prerequisite is to…

We provide a self-contained review of master equation approaches to modelling phonon effects in optically driven self-assembled quantum dots. Coupling of the (quasi) two-level excitonic system to phonons leads to dissipation and dephasing,…

介观与纳米尺度物理 · 物理学 2016-06-14 Ahsan Nazir , Dara P. S. McCutcheon

We study the influence of the phonon environment on the electron dynamics in a doped quantum dot molecule. A non-perturbative quantum kinetic theory based on correlation expansion is used in order to describe both diagonal and off-diagonal…

介观与纳米尺度物理 · 物理学 2015-05-20 A. Grodecka-Grad , J. Förstner

Matrix-operator difference-differential equations for dynamics of spectroscopic transitions in 1D multiqubit exchange coupled (para)magnetic and optical systems by strong dipole-photon and dipole-phonon coupling are derived within the…

量子物理 · 物理学 2011-08-23 D. Yearchuck , A. Dovlatova , V. Stelmakh

We present a fully atomistic approach to exciton-phonon coupling in semiconductor quantum dots that bridges microscopic electronic-structure calculations with non-Markovian open-quantum-system dynamics. On the example of an InAsP quantum…

介观与纳米尺度物理 · 物理学 2026-02-03 Yasser Saleem , Moritz Cygorek

The relaxation of electrons in quantum dots via phonon emission is hindered by the discrete nature of the dot levels (phonon bottleneck). In order to clarify the issue theoretically we consider a system of $N$ discrete fermionic states (dot…

介观与纳米尺度物理 · 物理学 2009-11-11 T. Stauber , R. Zimmermann , H. Castella

A quantum dot molecule doped with a single electron in the presence of diagonal and off-diagonal carrier-phonon couplings is studied by means of a non-perturbative quantum kinetic theory. The interaction with acoustic phonons by deformation…

介观与纳米尺度物理 · 物理学 2010-11-15 A. Grodecka-Grad , J. Förstner

We probe acoustic phonon mediated relaxation between tunnel coupled exciton states in an individual quantum dot molecule in which the inter-dot quantum coupling and energy separation between exciton states is continuously tuned using static…

介观与纳米尺度物理 · 物理学 2007-10-10 T. Nakaoka , H. J. Krenner , E. C. Clark , M. Sabathil , M. Bichler , Y. Arakawa , G. Abstreiter , J. J. Finley

We study theoretically phonon-assisted relaxation processes in a system consisting of one or two electrons confined in two vertically stacked self-assembled quantum dots. The calculation is based on a k.p approximation for single particle…

介观与纳米尺度物理 · 物理学 2010-09-14 Krzysztof Gawarecki , Michał Pochwała , Anna Grodecka-Grad , Paweł Machnikowski

We present a theoretical analysis of the phonon-assisted relaxation in a system composed of two self-assembled vertically stacked quantum dots. We construct realistic model, which takes into account the geometry and strain distribution in…

介观与纳米尺度物理 · 物理学 2013-01-16 Krzysztof Gawarecki , Paweł Machnikowski

A theoretical model for the phonon-mediated off-resonant coupling between a quantum dot and a cavity, under resonant excitation of the quantum dot, is presented. We show that the coupling is caused by electron-phonon interaction in the…

介观与纳米尺度物理 · 物理学 2011-08-24 Arka Majumdar , Yiyang Gong , Erik D. Kim , Jelena Vuckovic

For many applications of semiconductor quantum dots in quantum technology a well controlled state preparation of the quantum dot states is mandatory. Since quantum dots are embedded in the semiconductor matrix, the interaction with phonons…

介观与纳米尺度物理 · 物理学 2015-06-22 D. E. Reiter , T. Kuhn , M. Glassl , V. M. Axt

A theory of photoluminescence in semiconductor quantum dots is developed which relies on two key ingredients. First, it takes into account non-adiabaticity of the exciton-phonon system. Second, it includes the multimode dielectric model of…

介观与纳米尺度物理 · 物理学 2015-06-24 J. T. Devreese , V. M. Fomin , V. N. Gladilin , S. N. Klimin

Quantum dot molecules (QDMs) are one of the few quantum light sources that promise deterministic generation of one- and two-dimensional photonic graph states. The proposed protocols rely on coherent excitation of the tunnel-coupled and…

We present a detailed study of a phonon-assisted incoherent excitation mechanism of single quantum dots. A spectrally-detuned laser couples to a quantum dot transition by mediation of acoustic phonons, whereby excitation efficiencies up to…

光学 · 物理学 2015-06-05 S. Weiler , A. Ulhaq , C. Roy , S. M. Ulrich , D. Richter , M. Jetter , S. Hughes , P. Michler

Phonon-induced spin relaxation in coupled lateral quantum dots in the presence of spin-orbit coupling is calculated. The calculation for single dots is consistent with experiment. Spin relaxation in double dots at useful interdot couplings…

介观与纳米尺度物理 · 物理学 2007-05-23 Peter Stano , Jaroslav Fabian

A quantum dot strongly coupled to a single high finesse optical microcavity mode constitutes a new fundamental system for quantum optics. Here, the effect of exciton-phonon interactions on reversible quantum-dot cavity coupling is analysed…

量子物理 · 物理学 2009-09-04 I. Wilson-Rae , A. Imamoglu

Phonon-assisted singlet-singlet relaxation in semiconductor quantum dot molecules is studied theoretically. Laterally coupled quantum dot structures doped with two electrons are considered. We take into account interaction with acoustic…

介观与纳米尺度物理 · 物理学 2009-04-27 A. Grodecka , P. Machnikowski , J. Förstner

Optically controlled coherent dynamics of charge (excitonic) degrees of freedom in a semiconductor quantum dot under the influence of lattice dynamics (phonons) is discussed theoretically. We show that the dynamics of the lattice response…

介观与纳米尺度物理 · 物理学 2007-05-23 Pawel Machnikowski , Lucjan Jacak

We have studied the absorption of electromagnetic radiation of an anisotropic quantum dot taking into account the spin-flip processes that is associated with the interaction of the electrons with optical phonons. It is shown that these…

介观与纳米尺度物理 · 物理学 2009-11-13 V. A. Margulis , A. V. Shorokhov
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