Phys. Rev. Lett. 101, 227401 (2008) [4 pages]Single Charged Quantum Dot in a Strong Optical Field: Absorption, Gain, and the ac-Stark EffectReceived 25 February 2008; published 25 November 2008 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. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.227401
DOI:
10.1103/PhysRevLett.101.227401
PACS:
78.67.Hc, 42.50.Gy, 42.50.Hz, 78.47.Fg
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