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We predict dominating cooperative two-photon emission from two quantum dots coupled with a single mode photonic crystal cavity. The cooperative two photon emission occurs when excitons in two off-resonantly coupled quantum dots decay…

量子物理 · 物理学 2018-09-19 J. K. Verma , Harmanpreet Singh , P. K. Pathak

We propose a scheme for two-mode hyperradiant lasing in a system comprising two incoherently pumped quantum dots (QDs) coupled to a bimodal photonic crystal cavity. To account for the exciton-phonon interactions, we employ a…

量子物理 · 物理学 2025-06-27 Lavakumar Addepalli , P. K. Pathak

We investigate theoretically the collective radiance characteristics of an atomic ensemble with the simultaneous decay of two atoms. We show that the two-atom decay can significantly suppress the steady-state collective radiance of the…

量子物理 · 物理学 2022-12-21 Qian Bin , Xin-You Lü

We study a system of two quantum dots, each with several discrete levels, which are coherently coupled to a microwave oscillator. They are attached to electronic leads and coupled to a phonon bath, both leading to inelastic processes. For a…

介观与纳米尺度物理 · 物理学 2016-01-27 Christian Karlewski , Andreas Heimes , Gerd Schön

The purpose of this paper is to study the interaction between a two-level system and two continuous-mode photons. Two scenarios are investigated: Case 1, how a two-level system changes the pulse shapes of two input photons propagating in a…

量子物理 · 物理学 2019-10-14 Zhiyuan Dong , Guofeng Zhang , Nina H. Amini

We theoretically investigate the possibility of lasing in an electromagnetic resonator coupled to a voltage-biased hybrid double quantum dot comprised of a double quantum dot tunnel coupled simultaneously to a normal metal and a…

介观与纳米尺度物理 · 物理学 2020-03-24 S. Mojtaba Tabatabaei , Neda Jahangiri

We present a theory that efficiently describes the quantum dynamics of an electronic excitation that is coupled to a continuous, highly structured phonon environment. Based on a stochastic approach to non-Markovian open quantum systems, we…

量子物理 · 物理学 2009-11-05 Jan Roden , Alexander Eisfeld , Wolfgang Wolff , Walter T. Strunz

We present a theoretical study of the evolution of spatial coherence during relaxation between delocalized exciton states in a pair of vertically stacked semiconductor quantum dots coupled to acoustic phonons. We show that spatial coherence…

介观与纳米尺度物理 · 物理学 2015-08-13 Paweł Karwat , Paweł Machnikowski

Luminescence properties of colloidal quantum dots have found applications in imaging, light-sources, and displays. Despite wide interest, several experimental observations from these quantum dots, such as the short lifetime on the scale of…

介观与纳米尺度物理 · 物理学 2018-06-05 Meenakshi Khosla , Sravya Rao , Shilpi Gupta

We extend the idea of quantum phase transitions of light in the photonic Bose-Hubbard model with interactions to two atomic species by a self-consistent mean field theory. The excitation of two-level atoms interacting with coherent photon…

量子物理 · 物理学 2015-05-18 Soi-Chan Lei , Tai-Kai Ng , Ray-Kuang Lee

We study the asymptotic dynamics of a driven quantum two level system coupled via a quantum detector to the environment. We find multi-photon resonances which are due to the entanglement of the qubit and the detector. Different regimes are…

介观与纳米尺度物理 · 物理学 2009-11-10 M. C. Goorden , M. Thorwart , M. Grifoni

We study the dynamics of an atomic quantum dot, i.e. a single atom in a tight optical trap which is coupled to a superfluid reservoir via laser transitions. Quantum interference between the collisional interactions and the laser induced…

其他凝聚态物理 · 物理学 2015-06-24 A. Recati , P. O. Fedichev , W. Zwerger , J. von Delft , P. Zoller

We analyse a system composed of a qubit coupled to electromagnetic fields of two high quality quantum oscillators. Particular realization of such a system is the superconducting qubit coupled to a transmission-line resonator driven by two…

介观与纳米尺度物理 · 物理学 2014-05-12 S. N. Shevchenko , G. Oelsner , Ya. S. Greenberg , P. Macha , D. S. Karpov , M. Grajcar , U. Hubner , A. N. Omelyanchouk , E. Il'ichev

We study theoretically the radiative recombination of excitons in double quantum dots in the presence of carrier-phonon coupling. We show that the phonon-induced pure dephasing effects and transitions between the exciton states strongly…

介观与纳米尺度物理 · 物理学 2012-01-20 Pawel Karwat , Anna Sitek , Pawel Machnikowski

We propose cooperative two-photon lasing in two quantum dots coupled to a single mode photonic crystal cavity. We consider both quantum dots are driven either incoherently or coherently using external pump. We incorporate exciton-phonon…

量子物理 · 物理学 2024-01-18 Lavakumar Addepalli , P. K. Pathak

We consider the model of quantum dots interacting with coherent radiation when the relaxation processes may be neglected. The system under investigation consists of two discrete energy levels of the quantum dots in the presence of strong…

斑图形成与孤子 · 物理学 2007-05-23 Andrey Maimistov , Elena Kazantseva , Sergei Elyutin

The coherent nonlinear process where a single photon simultaneously excites two or more two-level systems (qubits) in a single-mode resonator has recently been theoretically predicted. Here we explore the case where the two qubits are…

We study a double quantum dot system coherently coupled to an electromagnetic resonator. A current through the dot system can create a population inversion in the dot levels and, within a narrow resonance window, a lasing state in the…

介观与纳米尺度物理 · 物理学 2011-07-29 Pei-Qing Jin , Michael Marthaler , Jared H. Cole , Alexander Shnirman , Gerd Schön

The interaction of a resonant light field with a quantum two-level system is of key interest both for fundamental quantum optics and quantum technological applications employing resonant excitation. While emission under resonant…

The possibility of steady-state population inversion in a small sample of strongly driven two-level emitters like quantum dots (QDs) in micro-cavities, and its utilization towards amplification of light and acoustic waves is investigated…

介观与纳米尺度物理 · 物理学 2013-10-01 Sumanta Das , Mihai Macovei