Electrooptical functions and ellipsometric parameters of excitons in cylindrical quantum dots
نویسندگان
چکیده
منابع مشابه
Kondo excitons in self-assembled quantum dots
A. O. Govorov, K. Karrai, and R. J. Warburton Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA Institute of Semiconductor Physics, 630090 Novosibirsk, Russia Center for NanoScience and Sektion Physik, Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, 80539 München, Germany Department of Physics, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom ~R...
متن کاملCharged Excitons in Self-assembled Quantum Dots
We have succeeded in generating highly charged excitons in InAs self-assembled quantum dots by embedding the dots in a field-effect heterostructure. We discover an excitonic Coulomb blockage: over large regions of gate voltage, the exciton charge remains constant. We present here a summary of the emission properties of the charged excitons. INTRODUCTION An exciton is the elementary excitation i...
متن کاملQuantum Entanglement of Excitons in Coupled Quantum Dots
Optically-controlled exciton dynamics in coupled quantum dots is studied. We show that the maximally entangled Bell states and Greenberger-HorneZeilinger (GHZ) states can be robustly generated by manipulating the system parameters to be at the avoided crossings in the eigenenergy spectrum. The analysis of population transfer is systematically carried out using a dressedstate picture. In additio...
متن کاملCalculation of pure dephasing for excitons in quantum dots
Pure dephasing of an exciton in a small quantum dot by optical and acoustic phonons is calculated using the " independent boson model ". Considering the case of zero temperature the dephasing is shown to be only partial which manifests itself in the polarization decaying to a finite value. Typical dephasing times can be assigned even though the spectra exhibits strongly non-Lorentzian line shap...
متن کاملFine structure of highly charged excitons in semiconductor quantum dots.
An exciton in a symmetric semiconductor quantum dot has two possible states, one dark and one bright, split in energy by the electron-hole exchange interaction. We demonstrate that for a doubly charged exciton, there are also two states split by the electron-hole exchange, but both states are now bright. We also uncover a fine structure in the emission from the triply charged exciton. By measur...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2010
ISSN: 1742-6596
DOI: 10.1088/1742-6596/210/1/012016