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We present a semi-analytic and asymptotically exact solution to the problem of phonon-induced decoherence in a quantum dot-microcavity system. Particular emphasis is placed on the linear polarization and optical absorption, but the approach…

Mesoscale and Nanoscale Physics · Physics 2019-10-02 A. Morreau , E. A. Muljarov

We investigate the microscopic description of exciton-polaritons that involves electrons, holes and photons within a two-dimensional microcavity. We show that in order to recover the simplified exciton-photon model that is typically used to…

Quantum Gases · Physics 2021-09-06 Jesper Levinsen , Guangyao Li , Meera M. Parish

We study theoretically the contribution of quantum effects to the exciton diffusion coefficient in atomically thin crystals. It is related to the weak localization caused by the interference of excitonic wavefunctions on the trajectories…

Mesoscale and Nanoscale Physics · Physics 2022-11-23 M. M. Glazov , Z. A. Iakovlev , S. Refaely-Abramson

We investigate the influence of vibrational phonon modes on the entanglement through a quantum dot molecule under the bias voltage-driven field. The molecular quantum dot system can be realized by coupled quantum dots in the middle of the…

Quantum Physics · Physics 2020-01-06 Elaheh Afsaneh , Malek Bagheri Harouni

Recent progress on qubit manipulation allows application of periodic driving signals on qubits. In this study, a harmonic driving field is added to a Rabi dimer to engineer photon and qubit dynamics in a circuit quantum electrodynamics…

Quantum Physics · Physics 2019-05-17 Zhongkai Huang , Fulu Zheng , Yuyu Zhang , Yadong Wei , Yang Zhao

Optically active quantum dot molecules (QDMs) can host multi-spin quantum states with the potential for the deterministic generation of photonic graph states with tailored entanglement structures. Their usefulness for the generation of such…

We report on the exciton formation and relaxation dynamics following photocarrier injection in a single-layer two-dimensional lead-iodide perovskite. We probe the time evolution of four distinct exciton resonances by means of time-resolved…

Polaritons, formed as a result of strong hybridization of matter with light, are promising for important applications including organic solar cells, optical logic gates, and qubits. Owing to large binding energies of Frenkel excitons…

We study electronic transport in diatomic molecules connected to metallic contacts in the regime where both electron-electron and electron-phonon interactions are important. We find that the competition between these interactions results in…

Strongly Correlated Electrons · Physics 2009-11-11 E. Vernek , E. V. Anda , S. E. Ulloa , N. Sandler

We present a Green's function based treatment of the effects of electron-phonon coupling on transport through a molecular quantum dot in the quantum limit. Thereby we combine an incomplete variational Lang-Firsov approach with a…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 T. Koch , J. Loos , A. Alvermann , A. R. Bishop , H. Fehske

The optical emission spectrum of a quantum dot in strong coupling with the single mode of a microcavity is obtained in the nonlinear regime. We study how exciton-exciton interactions alter the emission spectrum of the system, bringing the…

Mesoscale and Nanoscale Physics · Physics 2009-07-09 E. del Valle , F. P. Laussy , F. M. Souza , I. A. Shelykh

We present a microscopic semi-analytical theory for the description of organic molecules interacting strongly with a cavity mode. Exciton-vibration coupling within the molecule and exciton-cavity interaction are treated on an equal footing…

Mesoscale and Nanoscale Physics · Physics 2016-11-15 Ning Wu , Johannes Feist , Francisco J. Garcia-Vidal

The efficiency of two-dimensional Dion-Jacobson-type materials relies on the complex interplay between electronic and lattice dynamics; however, questions remain about the functional role of exciton-phonon interactions. This study…

We simulate the near-field effects of strong coupling between molecular excitons and localized surface plasmons, supported by aluminum nanodisks. The simulations are done using a simple model of a two-level system, implemented in a…

Mesoscale and Nanoscale Physics · Physics 2020-01-29 Nadav Fain , Tal Ellenbogen , Tal Schwartz

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…

Mesoscale and Nanoscale Physics · Physics 2026-02-03 Yasser Saleem , Moritz Cygorek

Phonons in solid-state quantum emitters play a crucial role in their performance as photon sources in quantum technology. For resonant driving, phonons dampen the Rabi oscillations resulting in reduced preparation fidelities. The phonon…

We report on the observation of the strong coupling regime between a single GaAs quantum dot and a microdisk optical mode. Photoluminescence is performed at various temperatures to tune the quantum dot exciton with respect to the optical…

Excitonic polaron is directly demonstrated for the first time in InAs/GaAs quantum dots with photoluminescence method. A new peak ($s'$) below the ground state of exciton ($s$) comes out as the temperature varies from 4.2 K to 285 K, and a…

A three terminal nanoscale refrigeration concept based on a vibron-coupled quantum dot hybrid system coupled to two electronic reservoirs and a phonon bath is proposed and analyzed in detail. While investigating the non-trivial role of…

Mesoscale and Nanoscale Physics · Physics 2021-02-03 Swarnadip Mukherjee , Bitan De , Bhaskaran Muralidharan

We study the generation of quantum correlations between two excitonic quantum dot qubits due to their interaction with the same phonon environment. Such generation results from the fact that during the pure dephasing process at finite…

Quantum Physics · Physics 2016-04-07 Jan Krzywda , Katarzyna Roszak