Single charged quantum dot in a strong optical field: absorption, gain, and the ac-Stark effect.
We investigate a singly charged quantum dot under a strong optical driving field by probing the system with a weak optical field. We observe all critical features predicted by Mollow for a strongly driven two-level atomic system in this solid state nanostructure, such as absorption, the ac-Stark effect, and optical gain. Our results demonstrate that even at high optical field strengths the electron in a single quantum dot with its dressed ground state and trion state behaves as a well-isolated two-level quantum system.
Xu
Xiaodong
X
The H. M. Randall Laboratory of Physics, The University of Michigan, Ann Arbor, Michigan 48109, USA.
Sun
Bo
B
Kim
Erik D
ED
Smirl
Katherine
K
Berman
P R
PR
Steel
D G
DG
Bracker
A S
AS
Gammon
D
D
Sham
L J
LJ