Two-Photon Coherent Control of a Single Quantum Dot
Timur Flissikowski, Alexander Betke, Ilya A. Akimov, F. Henneberger · Physical Review Letters · 2004
We report on two-photon coherent control of the biexciton state in single Stranski-Krastanov CdSe quantum dots. Clear interference patterns are observed at twice the optical frequency. The decay of the interference contrast is nonexponential and caused by a dynamical inhomogeneous broadening of the energy levels due to long-term fluctuations in the dot environment.