Abstract
We calculate the photoluminescence spectrum of a single semiconductor quantum dot strongly coupled to a continuum as a function of light frequency, gate voltage, and magnetic field. The spectrum is dominated by the recombination of several excitonic states which can be considered as quantum quenchs in which the many-body nature of the system is suddenly changed between initial and final states. This is associated with an Anderson orthogonality catastrophe with a power-law singularity at the threshold. We explain the main features observed experimentally in the region of stability of the trion $X^-$, the neutral exciton $X^0$ and the gate voltage induced transition between them.
Highlights
We calculate the photoluminescence spectrum of a single semiconductor quantum dot strongly coupled to a continuum as a function of light frequency, gate voltage, and magnetic field
The optical manipulation of semiconductor quantum dots (QDs) is a subject of great interest because of its potential use to control the electronic spin for quantum information processing [1,2,3] and spintronics [4,5,6]
The core of the research in this area consists of optical transitions involving either neutral excitons or trions
Summary
We calculate the photoluminescence spectrum of a single semiconductor quantum dot strongly coupled to a continuum as a function of light frequency, gate voltage, and magnetic field. The optical manipulation of semiconductor quantum dots (QDs) is a subject of great interest because of its potential use to control the electronic spin for quantum information processing [1,2,3] and spintronics [4,5,6]. Different optical means of manipulation [6] and detection [5] of the the spin have been proposed.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
