Coherent Nonlinear Optical Properties in Quantum Dots
Hideki Gotoh, Hidehiko Kamada
Abstract
This paper discusses optical nonlinear functions in semiconductor quantum dots (QDs) and their underlying physics and possible applications. The optical functions involve controlling light with no energy dissipation. The applications include conventional devices as well as future devices based on quantum phenomena, so they will be very useful in various technological areas. Theoretical results explain the physical principle of the nonlinear functions and the concept of the coherent slowdown of light. Experiments with actual QDs show that their optical responses agree well with the theoretical results. Light absorption was successfully controlled in a QD. These results clearly reveal that QDs provide intriguing optical functions and possible innovative applications.