Theory of two-photon processes in quantum dots: coherent evolution and phonon-induced dephasing

Details Theory of two-photon processes in quantum dots: coherent evolution and phonon-induced dephasing Theory of two-photon processes in quantum dots: coherent evolution and phonon-induced dephasing

2008-03-12

arxiv.org/abs/0803.1849v2

Phys. Rev. B 78, 195320 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages; moderate changes

Scientific paper

10.1103/PhysRevB.78.195320

The paper discusses two-photon Rabi oscillations between the ground state of a quantum dot and the biexciton state, as well as two-photon oscillations between the two single-exciton states with different circular or linear polarizations. The effect of phonon-induced decoherence on these processes is described and optimal system properties and optical driving conditions for coherent control are identified. It is shown that proper optimalization allows one to control the biexciton system via two-photon transitions with a high fidelity.

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