Entangled exciton states and their evaluation in coupled quantum dots

摘要

Field-control exciton entanglement in coupled quantum dots is studied and three important entanglement peaks are found at the corresponding anticrossings of four s-shell levels. Each entanglement peak exhibits its own behavior and can be designed by optimizing the structural parameters. With a proposed method, the entangled states of a real sample are evaluated from its field-modified photoluminescence spectrum, and the electronic and structural parameters required for the design of entangled states are extracted simultaneously.