2011/05/27 by Paweł Karwat, Pawel Karwat, Anna Sitek +2 · 1 citation
Chemistry · Physics and Astronomy · #Atomic physics #Biexciton #Chemistry #Condensed matter physics #Dephasing #Exciton #Laser #Optoelectronics #Phonon #Physics #Polarization (electrochemistry) #Quantum #Quantum decoherence #Quantum dot #Quantum mechanics #Radiative transfer #Semiconductor Quantum Structures and Devices #Spectroscopy and Laser Applications #Spectroscopy and Quantum Chemical Studies #Spontaneous emission #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.84.195315
published as Phys. Rev. B 84, 195315 (2011) · 10 pages, 7 figures
arxiv created 2011/05/27 · openalex publication_date 2011/11/09 · arxiv updated 2012/01/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 modify the spontaneous emission process and make it sensitive to temperature, which may lead to nonmonotonic temperature dependence of the time-resolved luminescence. We show also that, under specific resonance conditions, the biexcitonic interband polarization can be coherently transferred to the excitonic one, leading to an extended lifetime of the total coherent polarization, which is reflected in the nonlinear optical spectrum of the system. We study the stability of this effect against phonon-induced decoherence.