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相关论文: Phonon-assisted tunnelling in a double quantum dot…

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Two main mechanisms dictate the tunneling process in a double quantum dot: overlap of excited wave functions, effectively described as a tunneling rate, and phonon-assisted tunneling. In this paper, we study different regimes of tunneling…

量子物理 · 物理学 2020-01-08 Vladimir Vargas-Calderón , Herbert Vinck-Posada

We report on electron transport through an artificial molecule formed by two tunnel coupled quantum dots, which are laterally confined in a two-dimensional electron system of an Al$_x$Ga$_{1-x}$As/GaAs heterostructure. Coherent molecular…

介观与纳米尺度物理 · 物理学 2009-10-31 H. Qin , A. W. Holleitner , K. Eberl , R. H. Blick

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

We investigate the influence of electron-phonon interactions on the dynamical properties of a quantum-dot-cavity QED system. We show that non-Markovian effects in the phonon reservoir lead to strong changes in the dynamics, arising from…

介观与纳米尺度物理 · 物理学 2010-04-29 P. Kaer , T. R. Nielsen , P. Lodahl , A. -P. Jauho , J. Mork

We study theoretically phonon-assisted relaxation and tunnelling in a system composed of a quantum dot which is coupled to a quantum well. Within the kp method combined with the L\"owdin elimination, we calculate the electron states. We…

介观与纳米尺度物理 · 物理学 2017-12-11 Adam Mielnik-Pyszczorski , Krzysztof Gawarecki , Paweł Machnikowski

A new microscopic approach to the optical transitions in quantum dots and quantum dot molecules, which accounts for both diagonal and non-diagonal exciton-phonon interaction, is developed. The cumulant expansion of the linear polarization…

其他凝聚态物理 · 物理学 2015-06-25 E. A. Muljarov , T. Takagahara , R. Zimmermann

We study phonon-assisted electron tunneling in semiconductor quantum dot molecules. In particular, singlet-singlet relaxation in a two-electron doped structure is considered. The influence of Coulomb interaction is discussed via comparison…

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

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

We study a voltage biased InAs double quantum dot (DQD) that is coupled to a superconducting transmission line resonator. Inelastic tunneling in the DQD is mediated by electron phonon coupling and coupling to the cavity mode. We show that…

介观与纳米尺度物理 · 物理学 2014-07-29 Y. -Y. Liu , K. D. Petersson , J. Stehlik , J. M. Taylor , J. R. Petta

We report both photon- and phonon-assisted tunneling transitions in a linear array of three quantum dots, which can only be understood by considering the full three-dimensionality of the charge stability diagram. Such tunneling transitions…

介观与纳米尺度物理 · 物理学 2016-04-18 Floris R. Braakman , Pierre Barthelemy , Christian Reichl , Werner Wegscheider , Lieven M. K. Vandersypen

We review experiments on single electron transport through single quantum dots in the presence of a microwave signal. In the case of a small dot with well-resolved discrete energy states, the applied high-frequency signal allows for…

介观与纳米尺度物理 · 物理学 2007-05-23 W. G. van der Wiel , T. H. Oosterkamp , S. De Franceschi , C. J. P. M. Harmans , L. P. Kouwenhoven

We present a detailed theoretical study of non-Markovian dynamics in the fluorescence spectrum of a driven semiconductor quantum dot (QD), embedded in a cavity and coupled to a three-dimensional (3D) acoustic phonon reservoir. In…

介观与纳米尺度物理 · 物理学 2018-08-14 Abhishek Kumar

We present a quantum optics formalism to study intensity power broadening of a semiconductor quantum dot interacting with an acoustic phonon bath and a high $Q$ microcavity. Power broadening is investigated using a time-convolutionless…

量子物理 · 物理学 2015-03-19 Chiranjeeb Roy , Stephen Hughes

We investigate the influence of the electron-phonon interaction on the decay dynamics of a quantum dot coupled to an optical microcavity. We show that the electron-phonon interaction has important consequences on the dynamics, especially…

介观与纳米尺度物理 · 物理学 2012-08-17 P. Kaer , T. R. Nielsen , P. Lodahl , A. -P. Jauho , J. Mork

We investigate a quantum dot (QD) system coupled to a vibrational environment with a super-Ohmic spectral density and weakly to a leaky cavity mode, a model relevant for semiconductor-based single-photon sources. The phonon coupling induces…

介观与纳米尺度物理 · 物理学 2024-12-31 Sebastian Toivonen , Kimmo Luoma

Electron transport through a double quantum dot system is studied with taking into account electron-phonon interaction. The Keldysh nonequilibrium Green function formalism is used to compute the current and transmission coefficient of the…

介观与纳米尺度物理 · 物理学 2012-04-11 M. Bagheri Tagani , H. Rahimpour Soleimani

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

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

Electronic transport in diatomic molecules (two-level systems) connected to metallic contacts is analyzed in the presence of competing electron-electron and electron-phonon interactions. We show that phonon emission and absorption processes…

介观与纳米尺度物理 · 物理学 2009-02-17 E. Vernek , E. V. Anda , S. E. Ulloa , N. Sandler

Recently, the terahertz (THz) photon-assisted tunneling (PAT) through a two-level InAs quantum dot (QD) has been successfully realized in experiment [Phys. Rev. Lett. {\bf 109}, 077401 (2012)]. The Coulomb interaction in this device is…

介观与纳米尺度物理 · 物理学 2015-06-22 R. -Y. Yuan , G. -B. Zhu , X. Zhao , Y. Guo , H. Yan , Q. Sun , A. -C. Ji
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